MOTOROLA TEST EQUIPMENT PRODUCTS LIMITED WARRANTY (EXCLUDES EXPORT SHIPMENTS)
Motorola Test Equipment Products (herein the "product") that are manufactured or distributed by Motorola Communications Group Parts Department are warranted by Motorola for a period of one (1) year from date of shipment against defects in material and workmanship.
This express warranty is extended to the original purchaser only. In the event of a defect, malfunction, or failure during the period of warranty, Motorola, at its option, will either repair, or replace the product providing that Motorola receives written notice specifying the nature of the defect during the period of warranty, and the defective product is returned to Motorola at 1313 East Algonquin Road, Schaumburg, IL 50196 transportation prepaid. Proof of purchase and evidence of date of shipment (packing list or invoice) must accompany the return of the defective product. Transportation charges for the return of the product to Purchaser shall be prepaid by Motorola.
This warranty is void, as determined in the reasonable judgement of Motorola, if:
- (a) The product has not been operated in accordance with the procedures described in the operating instruction;
- (b) The seals on non-user serviceable components or modules are broken;
- (c) The product has been subject to misuse, abuse, damage, accident, negligence, repair or alteration.
In no event shall Motorola be liable for any special, incidental, or consequential damages.
In the event Motorola elects to repair a defective product by replacing a module or subassembly, Motorola, at its option, may replace such defective module or subassembly with a new or reconditioned replacement module or subassembly. Only the unexpired warranty of the warranty product will remain in force on the replacement module or subassembly. EXCEPT AS SPECIFICALLY SET FORTH HEREIN. ALL WARRANTIES EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE EXCLUDED.
EPS-30828-O
(A) MOTOROLA INC.
Communications Group
R1011B DC POWER SUPPLY
CONTENTS
| SE | CTION | ĸ |
|---|---|---|
|
Spe
For |
ecifications |
ii
iv |
| 1. | DESCRIPTION | 1 |
| 2. | PREPARATION FOR USE Page 2.1 Equipment Location Page 2.2 Power Requirements Page |
1
1 1 |
| 3. | DESCRIPTION OF OPERATOR'S ITEMS.Page3.1Main Power Off-On Switch and Circuit Breaker.Page3.2AC On Power Indicator (Green).Page3.3DC On-Standby Switch.Page3.4Voltage Range Switch.Page3.5Voltage Adj Control.Page3.6DC Volts Output Voltage MeterPage3.7Overvoltage Adj ControlPage3.8Current Range Switch.Page3.9Current Limit Adj ControlPage3.10DC Amperes Output Current MeterPage3.11Overcurrent Indicator (Amber).Page3.12High Current Output H and - JacksPage3.14Shorting BarPage3.15AC Line FusesPage |
1
1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 |
| 4. | OPERATING INSTRUCTIONS Page 4.1 Interconnecting Equipment Page 4.2 Operating Procedure Page |
3
3 3 |
| 5. | THEORY OF OPERATIONPage5.1Introduction and OverviewPage5.2Input DC Power SourcePage5.3Auxiliary Power SupplyPage5.4Series Switching CircuitPage5.5Output Filter CircuitPage5.6Metering CircuitsPage5.7Voltage Comparator CircuitPage5.8Pulse Generator CircuitPage5.9Monostable Multivibrator CircuitPage5.10Pulse Width Control CircuitPage | 4444555555 |
© Motorola, Inc. 1981 All Rights Reserved Printed in U.S.A.
technical writing rervicer 1301 E. Algonquin Road, Schaumburg, II. 60196
68P81069A94-O 11/25/81-PHI
SECTION
NUMBER
| 5.11 Protective CircuitsPage 55.12 Output Overvoltage CircuitPage 55.13 Input Overvoltage.Page 65.14 Thermal OverloadPage 65.15 Adjustable Current Limiting SystemPage 65.16 Transient Overcurrent ProtectorPage 6 | |
|---|---|
| 6. | MAINTENANCE.Page 66.1Case Removal and ReplacementPage 76.2Adjustment of Manual PRF ControlPage 76.3Meter Zero AdjustPage 86.4Ammeter CalibrationPage 8 |
| 7. |
DIAGRAMS
Schematic Diagram & Circuit Board Details |
SPECIFICATIONS
| AC Line Input |
R-1011B — Maximum Range: 108-132 V ac; 50-60 Hz
R-1011B/220 — Maximum Range: 198-242 V ac; 50-60 Hz R-1011B/240 — Maximum Range: 216-264 V ac; 50-60 Hz Power Consumption: 1200 watts maximum with 600 watts output Line Current: 15A max @120 V, 7A max @240 V with 600 watts output |
|---|---|
| DC Output Ranges |
Voltage: 0-20 V dc or 0-40 V dc
Current: 0-5A, 0-20A or 0-40A* *30A continuous, 40A intermittent |
| Output Power Rating |
600 watts, continuous
800 watts, intermittent |
| DC Load Regulation |
±0.1% max. line + load
±.025% typical no load to full load |
| Ripple and Noise | Less than 20 mV rms |
| Meters |
DC Voltage: Two scales; 0-20 and 0-40
DC Current: Three scales; 0-5, 0-20 and 0-40 Accuracy: ±5% |
| Temperature Range |
Operating: 0° to + 50° C
Storage: -40° to + 75° C |
| Physical Characteristics |
Size: 16'' (40.6 cm) W x 8'' (20.3 cm) H x 20'' (50.8 cm) D
Weight: 63 lb. (29 kg) |
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
FOREWORD
1. SCOPE OF MANUAL
This manual is intended for use by experienced technicians familiar with similar types of equipment. It contains all service information required for the equipment described and is current as of the printing date. Changes which occur after the printing date are incorporated by Instruction Manual Revisions (SMR). These SMR's are added to the manuals as the engineering changes are incorporated into the equipment.
2. MODEL AND KIT IDENTIFICATION
Motorola equipments are specifically identified by an overall model number on the nameplate. In most cases, assemblies and kits which make up the equipment also have kit model numbers stamped on them. When a production or engineering change is incorporated, the applicable schematic diagrams are updated.
As diagrams are updated, information about the change is incorporated into a revision column. This revision column appears in the manual next to the parts list or, in some cases, on the diagram. It lists the reference number, part number, and description of the parts removed or replaced.
3. SERVICE
Motorola's National Service Organization offers one of the finest nation-wide installation and maintenance programs available to communication equipment users. This organization includes approximately 900 authorized Motorola Service Stations (MSS) located throughout the United States, each manned by one or more trained, FCC licensed technicians.
These MSS's are independently owned and operated and were selected by Motorola to service its customers. Motorola maintenance is available on either a time and material basis or on a periodic fixed-fee type arrangement.
The administrative staff of this organization consists of national, area and district service managers and district representatives, all of whom are Motorola
employees with the objective to improve the service to our customers.
Should you wish to purchase a service contract for your Motorola equipment, contact your Motorola Service Representative, or write to:
National Service Manager Motorola Communications and Electronics, Inc. 1303 E. Algonquin Road Schaumburg, Illinois 60196
4. REPLACEMENT PARTS ORDERING
Motorola maintains a number of parts offices strategically-located throughout the United States. These facilities are staffed to process parts orders, identify part numbers, and otherwise assist in the maintenance and repair of Motorola Communications Group products.
Orders for all parts except crystals, active filters, code plugs, channel elements, and "Vibrasender"® and "Vibrasponder"® resonant reeds should be sent to the nearest area parts center. Orders for instruction manuals should also be sent to the area parts center.
When ordering replacement parts or equipment information, the complete identification number should be included. This applies to all components, kits, and chassis. If the component part number is not known, the order should include the number of the chassis or kit of which it is a part, and sufficient description of the desired component to identify it.
Orders for crystals, channel elements, active filters, PROMs, code plugs, and reeds should be sent directly to the factory address listed on the following page. Crystal and channel element orders should specify the crystal or channel element type number, crystal and carrier frequency, and the chassis model number in which the part is used.
Orders for active filters, PROMs, code plugs, Vibrasender and Vibrasponder resonant reeds should specify type number and frequency, should identify the owner/operator of the communications system in which these items are to be used; and should include any serial numbers stamped on the components being replaced.
iii
5. ADDRESSES
5.1 GENERAL OFFICES
MOTOROLA Communications and Electronics Inc. Communications Group Parts Dept. 1313 E. Algonquin Rd., Schaumburg, Illinois 60196 Phone: 312-576-3900
5.2 U.S. ORDERS
WESTERN AREA PARTS 1170 Chess Drive, Foster City, San Mateo, California 94404 Phone: 415-349-3111 TWX: 910-375-3877
MIDWEST AREA PARTS 1313 E. Algonquin Road Schaumburg, Ill. 60196 Phone: 312-576-7322 TWX: 910-693-0869
MID-ATLANTIC AREA PARTS 7230 Parkway Drive Hanover, Maryland 20176 Phone: 301-796-8600 TWX: 710-862-1941
EAST CENTRAL AREA PARTS 12995 Snow Road, Parma, Ohio 44130 Phone: 216-267-2210 TWX: 810-421-8845
EASTERN AREA PARTS 85 Harristown Road, Glen Rock, New Jersey 07452 Phone: 201-447-4000 TWX: 710-988-5602
PACIFIC SOUTHWESTERN AREA PARTS P.O. Box 85036 San Diego, California 92138 Phone: 714-578-2222 TWX: 910-335-1634
GULF STATES AREA PARTS 8550 Katy Freeway Suite 128 Houston, Texas 77024 Phone: 713-932-8955
SOUTHWESTERN AREA PARTS P.O. Box 34290 3320 Belt Line Road, Dallas, Texas 75234 Phone: 214-241-2151 TWX: 910-860-5505
SOUTHEASTERN AREA PARTS P.O. Box 368 Decatur, Georgia 30031 Phone: 504-981-9800 TWX: 810-766-0876
5.3 CANADIAN ORDERS
MOTOROLA LTD. National Parts Department 3125 Steeles Avenue East Willowdale, Ontario M2H 2H6 Phone: 416-499-1441 TWX: 610-492-2713 Telex: 065-25191
5.4 ALL COUNTRIES EXCEPT U.S. AND CANADA
MOTOROLA, INC. OR MOTOROLA AMERICAS, INC. International Parts Dept. 1313 E. Algonquin Road Schaumburg, Illinois 60196 U.S.A. Phone: 312-576-6492 TWX: 910-693-0869 Telex: 722443 or 722424 Cable: MOTOL PARTS
5.5 FACTORY ADDRESS FOR CRYSTAL, CHANNEL ELEMENT, ACTIVE FILTER, CODE PLUGS, PROMs, AND RESONANT REED ORDERS
ALL MAIL ORDERS
Motorola, Inc. Component Products Sales & Service P.O. Box 66191 O'Hare International Airport Chicago, Ill. 60666
CORRESPONDENCE
Motorola, Inc. Component Products Sales & Service 2553 N. Edgington Street Franklin Park, Illinois 60131
68P81025E81-S
1. DESCRIPTION
The R1011B DC Power Supply provides a highly filtered, voltage regulated and current limited power source for servicing all types of solid state communications equipment, from low power portable receivers to high power mobile transceivers. The output voltage of 0-40 V is available in two ranges: 0-20 V or 0-40 V; and is continuously adjustable in either range. The output current is available in three ranges: 0-5A, 0-20A, or 0-40A; and provides up to 30A continuously or up to 40A intermittently.
The low ripple content of the output eliminates the need for external filtering. A solid state, pulse-width modulated switching type voltage regulator maintains output voltage stability under sharply varying load conditions, such as where a high power transmitter is keyedup. This excellent stability allows the power supply to be connected directly to the load equipment eliminating the need for power supply operation as a battery charger, with an automotive type battery. (This mode of operation is often required when using other high current power supplies.)
Adjustable current limiting is used with the constant voltage source. Sufficient current is provided to maintain the output voltage, as the load demand increases, up to the preset current limiting level, at which time, an overcurrent indicator lights and the output voltage drops preventing the current from rising above the preset limit.
Protection circuits enhance the power supply usefulness. RFI and EMI shielding permit reliable operation within the rf environment frequently encountered in the service shop. A transient overload protector circuit shuts-down power supply operation when high current transients are sensed at the output. Crowbar short circuit protection prevents damage to the output transistors from direct shorts across the output terminals. Overvoltage circuits protect both the power supply input and output against damage from sustained overvoltage operation. This allows intermittent operation at the full 40A output. Thermoswitches shut-down the power supply in event of sustained overload conditions.
Negatively- or positively-grounded equipment, or equipment using a floating ground may be operated from the power supply. Separate terminals are provided for the high and low current outputs.
2. PREPARATION FOR USE
2.1 EQUIPMENT LOCATION
Select a flat surface for mounting the power supply that is convenient to the ac power source. Make sure that the mounting surface is sturdy enough to support
... power supply weight of 63 lb. Allow adequate space around the power supply to permit free airflow for cooling purposes.
2.2 POWER REQUIREMENTS
Before connecting power to the power supply, place the MAIN POWER switch in the OFF position. Plug the three-wire power cord into the power supply rear panel socket and into the ac power convenience outlet. It is recommended that a separately fused 15A outlet box be used for this power supply. Do not use the power supply until you are familiar with the usage of all operator's items and you have read the Operating Instructions provided in this instruction manual.
WARNING
Do not disconnect the third wire ground on this power cord. This could create an electrical shock hazard. If a two-wire to three-wire adapter is used, be sure that the third wire is connected to a good earth ground.
3. DESCRIPTION OF OPERATOR'S ITEMS
3.1 MAIN POWER OFF-ON SWITCH AND CIRCUIT BREAKER
This item is a combination input ac power OFF-ON switch and an overload circuit breaker. The circuit breaker automatically trips, turning off the power supply, whenever there is an excessive output load demand, a thermal hot spot, or an input or output overvoltage condition. The circuit breaker should be reset only after the faulty condition has been corrected.
3.2 AC ON POWER INDICATOR (GREEN)
Lights when the MAIN POWER switch is on and turns off if the circuit breaker trips.
3.3 DC ON-STANDBY SWITCH
DC ON position applies power to the OUTPJT jacks and binding posts. STANDBY position pre ents power from being applied to the output and metering circuits by inhibiting the output voltage regulator.
3.4 VOLTAGE RANGE SWITCH
Selects one of two dc output voltage ranges: 20 V (0-20 V) or 40 V (0-40 V).
3.5 VOLTAGE ADJ CONTROL
Adjusts the output voltage within the range determined by the VOLTAGE range selection.
Figure 1. Identification of Operator's Items
3.6 DC VOLTS OUTPUT VOLTAGE METER
Monitors the power supply dc output voltage. The meter scale permits reading of two voltage ranges: 0-20 V or 0-40 V.
3.7 OVERVOLTAGE ADJ CONTROL
Sets the maximum voltage level that can be applied to the load, regardless of the VOLTAGE range switch selection and VOLTAGE ADJ control setting. The circuit breaker will trip, turning off the power supply, should the output voltage attempt to rise above this maximum preset level.
3.8 CURRENT RANGE SWITCH
Selects one of three output current ranges: 5A (0-5A), 20A (0-20A), or 40A (0-40A).
3.9 CURRENT LIMIT ADJ CONTROL
Adjusts the maximum output current that can be applied to the load within the range determined by the CURRENT range selection. If excess load current is drawn the OVERCURRENT indicator lights and the output voltage drops limiting the current to the preset level.
3.10 DC AMPERES OUTPUT CURRENT METER
Monitors the power supply de output current. The three meter scales permit reading of three current ranges: 0-5A, 0-20A or 0-40A.
3.11 OVERCURRENT INDICATOR (AMBER)
Turns on when the load current drawn exceeds the setting of the CURRENT LIMIT ADJ control.
3.12 HIGH CURRENT OUTPUT + AND - JACKS
These jacks provide the power supply output for current levels above 5A. This is a floating output allowing either negatively- or positively-grounded equipment to be operated from the power supply. Heavy gaugecables terminated in 1/4 inch male banana plugs should be used for interconnection to these jacks.
3.13 LOW CURRENT OUTPUT BINDING POSTS
These binding posts provide the power supply output for current levels below 5A. The POS (RED) and NEG (BLK) binding posts provide a floating output. The GND (GRN) binding post is connected to earth (or safety) ground through the power supply chassis and the three-wire ac power cord. The floating output allows either negatively- or positively-grounded equipment to be operated from the power supply. The binding posts are the five-way type which can accommodate most de power cables used in the service shop.
3.14 SHORTING BAR
The shorting bar allows the power supply output to be strapped according to the ground requirements of the load equipment, regardless of whether the HIGH or LOW CURRENT OUTPUT is used. For negativelygrounded equipment, connect the shorting bar between
the GND and NEG binding posts. For positivelygrounded equipment, connect the shorting bar between the GND and POS binding posts. For equipment requiring a floating voltage, disconnect the shorting bar from all binding posts.
3.15 AC LINE FUSES
Fuse F1 protects the main power source in the power supply from damage due to internal failure or excessive power demand. Fuse F2 prevents damage to the auxiliary power source circuitry.
4. OPERATING INSTRUCTIONS
4.1 INTERCONNECTING EQUIPMENT
The power supply may be used to power either negatively- or positively-grounded equipment or equipment requiring a floating voltage source. Interconnect the equipment as follows:
Step 1. Determine the type of ground required for the equipment to be powered.
Step 2. For negatively-grounded equipment, connect the shorting bar between the GND and NEG binding posts. For positively-grounded equipment, connect the shorting bar between the GND and POS binding posts. From equipment requiring a floating voltage, disconnect the shorting bar from all binding posts.
CAUTION
When using the floating output, do not exceed a 100 V dc potential difference between the floating ground and the power supply GND (chassis) binding post. This condition could damage the power supply filter capacitors.
Step 3. If the equipment requires a load current of lessthan 5A, the LOW CURRENT OUTPUT binding posts should be used. Connect a suitable dc power cable to the POS and NEG binding posts and to the equipment, observing proper polarities.
Step 4. If the equipment requires a load current of more than 5A, the HIGH CURRENT OUTPUT jacks should be used. Connect a suitable dc power cable to the + and - jacks and to the equipment, observing proper polarities.
WARNING
For equipment operated with a grounded voltage, make sure that the power supply GND binding post and all other equipments are connected to the same earth (safety) ground point. This will prevent ground loops from being created and possibly cause an electrical shock hazard.
4.2 OPERATING PROCEDURE
This power supply is intended to be used as a constant voltage source. The output voltage is first preset to the desired level and then the current limiter is set to the maximum allowable limit. The power supply will deliver any current needed to maintain the preset voltage level up to the limiting current level. An overvoltage limit control prevents the output voltage from increasing above the preset safe operating level for the equipment being powered. Operate the power supply as follows:
Step 1. Connect load to output terminals per instrutions in preceding paragraph 4.1.
Step 2. Place DC ON-STANDBY switch in the STANDBY position. Set the OVERVOLTAGE ADJ potentiometer fully clockwise (maximum output voltage point).
Step 3. Turn on the power supply by placing the MAIN POWER switch in the ON position. The green AC ON power indicator should light.
Step 4. Place the 20 V-40 V VOLTAGE range switch in the proper position for the required output voltage. Set the VOLTAGE ADJ control fully counterclockwise (minimum output level).
Step 5. Place the 5A-20A-40A CURRENT range switch in the proper position for the anticipated load current demand. Set the CURRENT LIMIT ADJ control fully clockwise.
CAUTION
This adjustment temporarily defeats the power supply current limiting capability. The maximum current for the CURRENT range selected could be applied to the load.
If the maximum load current is known, an alternate adjustment procedure may be made as follows. Assume that the OVERCURRENT LIMIT ADJ control provides linear adjustment over its entire operating range. Set control to an approximately correct position. For example, if the CURRENT range switch is in the 20A position, then a mid-range setting of the OVERCUR-RENT LIMIT ADJ control would be approximately 10A.
Step 6. Place the DC ON-STANDBY switch in the DC ON position.
Step 7. Slowly turn the VOLTAGE ADJ control clockwise until the desired output voltage is obtained, as read on the dc volts meter. An output will not be observed until the control is turned slightly.
Step 8. Slowly turn the CURRENT LIMIT ADJ control counterclockwise until the OVERCURRENT indicator just lights. Turn control slightly clockwise. The
output current is now limited to about 10% more than the initial value.
Step 9. The power supply may now be used and operated for those applications not requiring output overvoltage protection. If overvoltage protection is needed, proceed as follows:
a. Disconnect load from output terminals.
- b. With the OVERVOLTAGE ADJ potentiometer turned fully clockwise, turn the VOLTAGE ADJ control clockwise until the maximum permissible output voltage is read on the voltmeter.
- c. Turn the OVERVOLTAGE ADJ control slowly counterclockwise until the circuit breaker trips.
- d Turn the VOLTAGE ADJ control counterclockwise at least 1/8 turn and connect the load to the output terminals.
- e. Restart the power supply in the normal way.
5. THEORY OF OPERATION
5.1 INTRODUCTION AND OVERVIEW
The Motorola R1011B High Current Power Supply is a typical switching regulator design with special features to lessen its susceptibility to rf interference and to protect associated equipment. It consists of an input dc power source, an auxiliary power supply, a series switching circuit, an output filter, a voltage comparator and pulse generator and protection and metering circuits.
5.2 INPUT DC POWER SOURCE
The input dc power source (or main dc supply) consists of transformer T1 providing line isolation and voltage step-down, bridge rectifier CR7, and filter capacitors C1 thru C4. Bleeder resistors R6 and R7 stabilize the output voltage and supply an input reference voltage. L1 improves filtering and regulation, gives increased transformer and rectifier efficiency and isolates the input circuit from output transients. Filter capacitors C1-C4 are chosen to provide a low impedance to both 120 Hz and 20 kHz.
5.3 AUXILIARY POWER SUPPLY
The auxiliary power supply provides five regulated output voltages and an unregulated negative voltage for various control functions in the circuit. The regulated output voltages come from three terminal IC regulators or Zener diodes. Of special importance is the -18 volt regulated output voltage, used as a reference voltage for the main regulator circuit.
5.4 SERIES SWITCHING CIRCUIT
5.4.1 Pass transistors Q1-Q4, driven by driver transistors Q201-Q205, act as a switch to alternately onnect or disconnect the output of the main DC supply
to the output filter circuit. The pass transistors are either completely turned off or saturated; the average output voltage is proportional to the input voltage times the duty factor of the pulsed on time of the pass transistors. Commutating choke L2 provides the necessary series impedance to limit the current when the pass devices are turned on and to store energy to drive the output circuit during the period when the pass transistors are off. Commutating diode CR3 provides a current path for the output current when the pass transistors are off.
5.4.2 The input to L2 consists of a series of positive pulses whose amplitude is one or two volts less
than the voltage across C1-C4. The output of L2, across C5 and C6, consists of well-filtered dc whose value is equal to the average value of the positive pulses. A circuit is provided to prevent turning on the series pass devices more than 95 percent of the time.
5.4.3 In order to understand the operation of the cir-
cuit it must be remembered that a transistor is a current operated device. Thus, when Q205 is turned on, its collector voltage drops almost to zero, but the voltage on the bases of Q201-Q204 remains almost constant. They are driven by current flowing thru R216-R219 in parallel with R226-R229. Resistors R206-R209 and R211-R214 are provided to help equalize the drive to the main pass transistors.
5.4.4 A plug and jack connection is provided at the in-
put to Q205. If it is desirable for maintenance purposes to test the switching circuit without the main control circuit board it is possible to do so by connecting a pulse generator to the input cable at this point. The positive pulses should be about 3 volts amplitude, 50 microseconds maximum pulse width and no more than 90 percent duty factor. When the supply is in the STANDBY position, the input to Q205 is short-circuited.
5.4.5 Under certain failure mode conditions, such as the short circuiting of one of the capacitors (C1-C4), the output voltage could become higher than the input voltage. Diodes CR1 and CR2 prevent damaging reverse voltages from being applied across the pass transistors in such a case.
5.5 OUTPUT FILTER CIRCUIT
5.5.1 The commutating and smoothing functions of L2 and C5 have been discussed above. C6 improves filtering and also helps absorb transient voltages generated by L2 if the output current is suddenly changed.
5.5.2 Additional capacitive and inductive rf filtering is provided inside a shield box over the output ter-
minals. Filtering is provided from each terminal to chassis ground and from terminal to terminal so as to minimize interference going either direction with either output terminal grounded or floating up to 100 volts above ground potential.
5.5.3 The output voltage for the metering circuit and control system is taken from the output terminals to avoid voltage drops in the internal wiring.
5.6 METERING CIRCUITS
5.6.1 The output voltage is indicated on a two scale voltmeter with a 10 milliampere full scale movement. The proper series resistors are switched in by the voltage range switch.
5.6.2 Current is measured in reference to the voltage drop across a precision 20 watt .01 ohm resistor in the negative return lead of the supply. The voltage drop across this resistor will be 0.4 volts at full (40 amp) output. The proper multiplying resistor is switched into the circuit by the current range switch. The ammeter uses the same movement as the voltmeter; the difference is in the scale calibration.
5.7 VOLTAGE COMPARATOR CIRCUIT
5.7.1 The power supply output voltage is applied to a voltage divider consisting of R104 in series with R105 or R105 and R106 in parallel. The resultant output voltage (0 to 12 volts) is applied to R103. The -18 volt regulated reference voltage is applied to R24, OUTPUT VOLTAGE ADJUST, and the output voltage, variable from 0 to -18 volts, is applied to R101, filtered by C101 and C102 and connected to R103 through R102. The resultant is a nominally zero voltage at the non- inverting input, pin 3, of voltage comparator U101. The inverting input terminal, pin 2, is referred to circuit ground through R107. This connection permits output voltage from almost zero to 40 volts with full regulator sensitivity. Inverse feedback around U101 is provided by R108, R109 and C104; the dc gain of U101 is much higher than the ac gain to provide maximum regulation with good ac stability. C102 also aids circuit stability and provides a soft turn on and minimum transient currents thru the pass devices when the output voltage is changed.
5.7.2 A slight positive bias is applied to the comparator input terminal through R162, assuring that the pass devices will start at minimum duty factor when turned on from standby. This feature results in a slight offset from zero in the voltage adjust control. Another circuit, to be discussed below, clamps the input to provide mimimum output in the event of a large surge of output current, thus protecting the pass devices.
5.8 PULSE GENERATOR CIRCUIT
Q101, a unijunction transistor, is used as a pulse generator to produce a positive pulse across R120. The width of the pulse is determined by the time constant R120-C105, the pulse repetition frequency (PRF) is determined by the time constant of C105 and the equivalent total series resistance of R117 and R118. The manual PRF control, R117, is adjusted so that the total duty factor of the pulse generator will not exceed 90%.
The output of Q101, guaranteed to be a short positive pulse by the action of C106, R123, CR104 and CR105, is applied to the base of Q102.
5.9 MONOSTABLE MULTIVIBRATOR CIRCUIT
Q102 and Q103 comprise a monostable multivibrator. Q103 is normally fully ON because of the positive bias through R125. Q102 is normally OFF because of R124. Q102 is pulsed on by the positive trigger pulse from Q101. Cross coupling through C107 then turns Q103 OFF. The time constant R125-C107 determines the time the circuit stays in this condition. After the base of Q103 becomes positive again by current through R125, the circuit switches back to its original state, helped by cross coupling through C108 and R128. The output at the collector of Q103 is a positive pulse with sharp rise and fall times. The output is buffered by emitter-follower Q104.
5.10 PULSE WIDTH CONTROL CIRCUIT
5.10.1 The output of U101 is also connected to inverteramplifier Q105 through R112 and CR103. When pin 6 of U101 is less than 0 volts, Q105 is nonconducting and the voltage on the collector of Q105, which is connected to the gate of Q106, is 18 volts. Q106 is turned fully OFF and has no effect on the circuit. This results in maximum pulse width or full output voltage.
5.10.2 If the reference voltage at the input (pin 3) of
U101 starts going positive, the output at pin 6 of U101 starts going positive and Q105 will start conducting, lowering the gate voltage of Q106, the pulse width controller. Q106 in series with R126 is effectively a variable resistor in shunt with R125; as the combined resistance is lowered, the positive pulse at the output of Q103 and Q104 becomes narrower. Since the PRF stays the same, the duty factor is lowered and the output voltage decreased.
5.11 PROTECTIVE CIRCUITS
A number of circuits designed to protect the power supply and/or devices connected to it are incorporated in the control circuits. The supply is protected against input and output overvoltage, excess output current (continuous and transient) and excess dissipation. The circuits to accomplish these objectives are described below.
5.12 OUTPUT OVERVOLTAGE CIRCUIT
5.12.1 An overvoltage condition in the output circuit usually indicates a failure in the control circuit and demands immediate positive action to protect the equipment connected to the load.
5.12.2 A +18 volt regulated reference voltage is connected across R25, the OVERVOLTAGE AD-
JUST pot. A fraction of this voltage is applied to one terminal of the optical isolator U103 through R153. The
other terminal of the optical isolator is connected to output voltage divider R8-R9 through diode CR115. If this terminal becomes more positive than the terminal connected to R25 U103 will conduct, producing a nositive output signal which will turn on SCR101. Once started. SCR101 will conduct until the supply is shut off, SCR101 supplies a positive output that turns on output clamp Q110, removing the drive from the pass transistors immediately lowering the output unless the pass transistors are shorted. SCR101 also turns on an output crowbar, SCR2, which short circuits the output, forcing it to zero even if the pass transistors are shorted. (If the pass transistors are shorted, damage also will occur to the associated base-emitter resistors.) At the same time, 'CR101 also turns on O5, the CIRCUIT BREASER ACTUATOR, shutting off the main ac power in less than one second. The only limitation to how fast the output voltage will be reduced to zero is current limiting resistor R28 which limits the current through SCR2 to less than 300 amperes.
5.13 INPUT OVERVOLTAGE
Zener diode ZR1 is non-conducting unless the output from the main power supply exceeds 100 volts. At voltages higher than this, ZR1 conducts, turning on SCR101, and the sequence described above occurs, shutting off the supply.
5.14 THERMAL OVERLOAD
5.14.1 Thermal switch SW5 is normally closed, shorting the output of R11 to ground. If this switch gets too hot it will open, causing a positive potential at the gate of SCR101 and again shut off the supply. The switch monitors the temperature of the main pass transistors (Q1-Q4). The pass transistors will overheat as a result of high output currents, but especially at high output voltage and low line. They can also quickly overheat as a result of failure or blockage of the cooling air system.
5.14.2 Thermal switch (SW8) is mounted on the rear main chassis panel to monitor the temperature of the rear panel. If the panel temperature exceeds the thermostat switch point, the thermostat closes, turning on the fan. Under light load conditions the fan may not turn on because the panel temperature is below the thermostat switch point.
5.15 ADJUSTABLE CURRENT LIMITING SYSTEM
5.15.1 A voltage of 0.01 volt per ampere is developed across R10. In addition to driving the ammeter circuit, this voltage is applied to the input (pin 3) of U102 where it is compared with another negative voltage derived from the auxiliary power supply. The level of this reference voltage determined by the position of the current range switch and the setting of R16, the OVERCURRENT LIMIT ADJUST. This control can
be adjusted for any setting from zero to slightly more than the upper limit of the selected current range.
5.15.2 The output of U102 (pin 6) is normally positive and O108 and O109 are non-conducting. If pin 3
becomes more negative than pin 2 the output of U102 will go negative, turning on both devices. Q109 will turn on DS3, the overcurrent indicator lamp, and Q108 will start lowering the reference voltage applied to U101, thus lowering the output voltage until the output current falls below the preset value. However, the time constants in the circuit, principally C102, prevent this from happening instantaneously.
5.16 TRANSIENT OVERCURRENT PROTECTOR
5.16.1 Certain conditions which may occur even in normal operation of the power supply can result in
very high transient currents which may damage the pass devices before the normal overcurrent system can be activated. Two examples of this type of condition are a direct output short circuit or the charging of a large capacitor. The transient overcurrent protection circuit will protect the supply under these conditions.
5.16.2 If the current through R10 exceeds 60 amperes,
the output of Q104 (pin 6) goes positive. CR114, which has been back-biased by the negative voltage on pin 6 of U104 now conducts and completely overrides the signal at the input of U101, causing the output of U101 to go fully positive. This instantaneously causes the pulse generator to go to a minumum duty cycle condition where the pass transistors can stand high currents for a short time.
5.16.3 The circuit is not stable in this condition and will tend to oscillate between the two current limiting
modes as shown by the flickering of the overcurrent lamp; therefore, the circuit should not be allowed to work into a short circuit for any length of time.
6. MAINTENANCE
6.1 CASE REMOVAL AND REPLACEMENT
Step 1. Remove the three Phillips-head screws from the top of the front panel. These screws secure hidden case tabs to the rear of the front panel.
Step 2. Remove the three slotted-head screws securing the case top to the rear panel.
Step 3. Remove the eight slotted-head screws securing the case sides to the power supply chassis. (There are four screws on each side.)
Step 4. Lift case upward, out of the chassis.
Step 5. To replace the case, reverse Steps 1 through 4. Secure the case with all screws to maintain proper rf shielding.
6.2 ADJUSTMENT OF MANUAL PRF CONTROL
NOTE
This control has been set at the factory and normally should not require adjustment. Do not attempt to reset it without proper test equipment.
6.2.1 Test Equipment Required
a. Oscilloscope
b. Oscilloscope Probe
6.2.2 Procedure
Step 1. Remove the drive from the series pass transistors by disconnecting P4 from J101.
Step 2. Connect the scope probe to the center pin of J101.
Step 3. Turn on the supply and turn the output voltage control to mid range. The output of the power supply will be zero volts, but a positive pulse train will appear on the oscilloscope.
Step 4. Adjust manual PRF control R117 until there is a spacing of 7 to 9 microseconds between pulses.
Step 5. Remove scope probe and reconnect P4.
6.3 METER ZERO ADJUST
If the dc volts or dc amperes meter does not return to zero when ac power is turned off, the meter may require a mechanical zero adjustment. The adjustment screw is on the meter face. Make the adjustment only when the power supply is in its normal upright operating position, and the ac power is turned off.
6.4 AMMETER CALIBRATION
6.4.1 Introduction
Three principal factors can influence the ammeter calibration:
- a. The condition of a connection to the .01 ohm current sensing resistor R10.
- b. The condition of the ammeter itself.
- c. The accuracy of the ammeter multiplying resistors, R17 through R20.
6.4.2 Test Equipment Required
- a. 1 ohm load resistor: Motorola PK-756 or equivalent.
- b. Voltmeter
6.4.3 Testing R10
Step 1. Connect a known 1 ohm load resistor of adequate rating to the output terminal of the supply. Connect the voltmeter across the terminals of the 1 ohm resistor.
Step 2. Turn on the supply and increase the output to 10 volts across the 1 ohm load resistor.
Step 3. Switch the supply to STANDBY, disconnect the voltmeter from the load resistor.
Step 4. Connect the positive terminal of the voltmeter to the positive terminal of the ammeter and the negative terminal to the side of R17 not connected to R18.
Step 5. Turn the STANDBY switch to DC ON. The voltmeter should read 0.10 volts, ±3%. If it reads higher than .103 volts, R10 is defective or the connections to R10 are not making good contact.
NOTE
If the steps in 6.4.3 have been correctly followed and the meter reads equally incorrectly on all ranges, the meter is probably defective. Remove the meter and check it in series with another 10 milliampere meter of known accuracy. Replace the meter if defective.
6.4.4 Replacement of R20
R20 is a factory test selected resistor connected in parallel with R19 to compensate for tolerances in the meter movement coil resistance; its greatest effect is on the 5 ampere current range. It normally should not require replacement unless the ammeter has been changed. The proper value for R20 can be checked or determined in the following manner:
Step 1. Connect a suitable load across the output terminals of the power supply in series with a 0 to 5 amp dc ammeter. A typical value would be 2 ohms, 100 watts. The current range switch should be set at 5 amperes and the voltage range switch at 20 volts.
Step 2. Slowly increase the output voltage from 0 to 10 volts. The two current meters should track within 5%.
Step 3. If the two meters do not track, remove R20 and replace it with another value experimentally determined to give the correct meter reading. As a guide, measure the value of the resistor removed. If the ammeter originally read high, replace R20 with a higher resistance value; and conversely.
NOTE
If an accurate 0-5 amp dc ammeter is not available, an accurate de voltmeter measuring voltage across the load resistor may be used if the load resistance is also accurately known. The reading on the voltmeter will equal R1 times the correct ammeter reading.
SHOWN FROM SOLDER SIDE
R1011B DC Power Supply Schematic Diagram & Circui, Motorola No. PEPS-33602-C (Sheet 1 of 3) 11/25/81-PHI
ILLER
10. IF wired for 100 V Range 15A.
- except for those
- entreferencing scheme is used
- nts earth ground
- equipment such as 20 V
PARTS LIST SHOWN ON BACK OF THIS DIAGRAM R1011B DC Power Supply Schematic Diagram & Circuit Board Details Motorola No. PEPS-33602-O (Sheet 3 of 3) 11/25/81-PHI
parts list
| REFERENCE |
MOTOROLA
PART NO. |
DESCRIPTION | |
|---|---|---|---|
| fan: | |||
| B1 | 59-80328A91 | capacitor, fixed; uF: | |
| 04 Mar. 4 | 10 0100 4 17 |
Unless otherwise stated:
4100: 100 V |
|
| C1 thru 4 | 23-8320A27 | 4 100; 100 4 | |
| C5, 7 | 23-80312A20 | 4500, 50 V | |
| 23-00312A28 | 0.02 , 2000 V | ||
| 14.30 | 21-00080123 | 0.01,1000 ( | |
| C15. 16. 20. 21 | 21-84211801 | feedthru 0.01; 250 V | |
| C17 thru 19 | 8-863550 | 4; 200 V | |
| C22 | 8-82095G08 | .1 mylar | |
| C23 | 21-82428811 | .01 disc | |
| C101, 103, | 21-801139 | 0.01 | |
| 110 thru 116, | • | ||
| 125 (11/0-127 | 23.84762811 | 33: 15 V | |
| C104 112 | 8.82905G06 | 0.47:50 V | |
| C105 | 21-82537B38 | 1000 pF | |
| C106 | 8-82095G14 | .01 mylar | |
| C107 | 21-82537B38 | 1000 pF | |
| C108 | 21-840046 | 100 pF | |
| C123 | 23-84762H01 | 4.7: 35 V | |
| C119, 120 | 23-80319A67 | 1000; 35 V | |
| C121, 122 | 23-82601A29 | 60; 50 V | |
| oirouit breaker | |||
| CB1 | 80-80326468 | 0.05A; 400 ohms | |
| 001 | 00 00020/100 | ||
| semiconductor device, diodes: | |||
| CR1, 2 | 48-82525G21 | silicon | |
| CR3 | 48-869963 | silicon | |
| CR4, 5, 108, | 48-82400113 | SINCON | |
|
109, 110, 110,
101 thru 124 |
|||
| C87 | 48-84751H05 | bridge rectifier | |
| CR101 thru 107. | 48-82420C16 | sillcon | |
| 112 thru 114 | |||
| indicator jamp: | |||
| 051 3 | 65-833581406 | type 327, 28 V, 0.04A | |
| 031,3 | 03-000331700 | ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, | |
| luse: | |||
| F1 | 65-139131 | 15A (100/120 V ac input) | |
| F2 | 65-868957 | 3/8A (100/120 V ac input) | |
| F1 | 65-80375A50 | 7A (220/240 V ac input) | |
| F 1 | 65-80375A55 | 3/16A (220/240 V ac input | |
| connector, receptacle: | |||
| .i1 | 9-868661 | iack: 40 amp; RED | |
| J2 | 9-868662 | jack; 40 amp; BLK | |
| J3 | 46-863925 | post binding: RED | |
| J4 . | 46-82921K01 | post binding; GRN | |
| J5 | 46-863924 | post binding BLK | |
| J6 | 9-80328A75 | connector; 22 contact | |
| J1 | 28-83258001 | 500KEL, 40, 11418 | |
| coll: | |||
| L2 | 25-80326A64 | 0.4H @ 20A | |
| L.4 | 24-80326A97 | HFI DEI | |
| L5 | 24-60326A96 |
nni
ferrite bead |
|
| L0, / | 100000000 | Torrite Depu | |
| meter | |||
| M1 | 72-83379K03 | voltage | |
| M2 | 72-83379K04 | current | |
| transistor: | |||
| O1 thru O4 | 48-869965 | silicon, NPN | |
| Q5, 205 | 48-869967 | silicon, NPN | |
| Q101 | 48-869256 | unijunction | |
| Q102, 103 | 48-869570 | silicon, NPN | |
| Q104, 105, 110 | 48-869642 | silicon, NPN | |
| Q106, 107 | 48-869962 | FET | |
| Q108 | 48-869643 | SIECON, FNP | |
| Q109 | 48-869649 | silicon, PNP | |
| resistor, fixed: ± 5%; 1/2 W: | |||
| unless otherwise stated: | |||
| R1 thru 4 | 17-82350A01 | wirewound: 3; 1 W | |
| R6, 7 | 17-80326A54 | wirewound: 150; 25 W | |
| R8 | 17-80326A53 | wirewound; 50; 25 W | |
| H9 | 17-80326A50 | wirewound: 20, 20 W | |
| H10 | 17-80312A34 | 476 | |
|
111,104,
1110 140 167 |
6-125441 | 470 | |
| 1572, 142, 107, | 0-120/041 | ||
| R14, 15 | 6-80327A88 | 2k; ±1% | |
| R16 | 18-80320A68 | var: 500 | |
| 817 | 6-80327A87 | 20; ± 1% |
R1011B DC Power Supply Electrical Parts Lists and Parts Location Photographs Motorola No. PEPS-33603-O 11/25/81-PHI
4
|
MOTOROLA
PART NO. |
DESCRIPTION | ||||
|---|---|---|---|---|---|
| 3-80327A85 | 15; ±1% | ||||
| 17-837834 |
WireWound: 3.9
Eactory Selected |
||||
| 10 00228 461 | var 5k | ||||
| 18-80329466 | var: 2k | ||||
| 2.90327492 | 8.2k: ±1% | ||||
| S-80327A93 | 51k; ± 1% | ||||
| 17-82177826 | wirewound: 0.16; 10 W | ||||
| 5-125A49 | 1k | ||||
| 6-83175C89 | 7.5k; ±1%; 1/4 W | ||||
| 6-83175C93 | 10.2k; ±1%; 1/4 W | ||||
| 8-125C73 | 10k | ||||
| 2 20207 4 89 | 3.3k + 1% | ||||
| 5-50327A05 | 3.9k: ±1% | ||||
| 6-60327A90 | 1.5k: ±1% | ||||
| 8.125B12 | 390k | ||||
| 6-125A83 | 27k | ||||
| 6-125A75 | 12k | ||||
| 6-125A67 | 5.6k | ||||
| 18-83083G24 | var: 25k | ||||
| 6-125A83 | 27k | ||||
| 8-125A25 | 100 | ||||
| 6-125A09 | 22 | ||||
| 6-125A61 |
3.3R
970 |
||||
| 6-125A35 | 73.2k· + 1%: 1/4 W | ||||
|
5-84040000
c 106A32 |
200 | ||||
| 6.125451 | 1.2k | ||||
| 6-125A61 | 3.3k | ||||
| 6-125A45 | 680 | ||||
| 6-125A97 | 100k | ||||
| 6-125A57 | 2.2k | ||||
| 6-125B22 | 1 meg | ||||
| 6-125A97 | 100k | ||||
| 6-125A55 |
1.0K
60: ± 5% |
||||
| 6-125A20 | 470k | ||||
| 6-120014 | 330 | ||||
| 6-80327A92 | 8.25k; ±1%; 1/4 W | ||||
| 6-125C01 | 10; ± 10% | ||||
| 6-125D70 | 1; ± 10% | ||||
| 17-82177B21 | wirewound: 1k; 5 W | ||||
| silicon controlled rectifier: | |||||
| 48-84973C01 | SHICON | ||||
| 48-84755HUI | Shicon | ||||
| switch: | |||||
| 40-80312A42 | rotary | ||||
| 40-80312A43 | tocale | ||||
| 40-83376K01 | n/o CB1 | ||||
| 80.80332462 | thermostat | ||||
| 80-80332A60 | thermostat | ||||
| transformer: | |||||
| 25-80374A86 | power (main) | ||||
| 25-80374A83 | power (auxiliary) | ||||
| integrated circuit: | |||||
| 51-84320A13 | operational amplifier | ||||
| 51-84621K43 | optical coupler | ||||
| voltage regulator: | |||||
| 51-84621K38 |
+ 18 V
19 V |
||||
| 51-84621K39 | ~ 10 V | ||||
| 51-84621K40 |
7 14 Y
Zeper diode: 6.8 V |
||||
| 40-0433VAU | |||||
| cable: | • | ||||
| 20 20228471 | nower: 3 cond.; with plug | ||||
100 V 3.3 V im performance, diodes, transistors, and integrate orola part numbers.
its must
INSTRUCTION MANUAL REVISION SMR-5744 4/3/90
GENERAL:
This Instruction manual revision outlines changes that have occurred since the printing of the manual. Use this information to correct your manual.
INSTRUCTION MANUAL AFFECTED:
Model: R-1011B, DC Power Supply 0-40V, 0-40A. Manual # 68-81069A94-0
REVISION DETAILS:
Changes to Parts List # PL-5386-C Delete: 51-84621K43, U103 opto-coupler Add: 51-80348A81, U103
Delete: 76-83960B01, L7 ferrite bead Add: 76-84069B02, L7
©Motorola inc. 1990 All Rights Reserved Printed in U.S.A.
MOTOROLA INC. Test Equipment Products 1313 E. Algonquin Rd. Schaumburg, Illinois 60196
SMR 5744
SERVICE MANUAL REPRODUCTION
The attached manual is for non-current Motorola Equipment. In order to continue to supply this service literature certain steps may have been taken. These may have included the the following:
- 1) removal of cover
- 2) alternate binding or packaging method
- 3) size reduction of some foldouts, e.g. schematics
- 4) the division of extremely long schematics (over 17") into two or more sheets.
- 5) photographs and screens reproduced from printed material (as opposed to original screened negatives)
- 6) the elimination of colors other than black
We feel that these steps have only minor effect on the readability and utility of basic service information and will allow us to continue to supply this literature at a reasonable cost.
Motorola Communications and Electronics Inc. Communications and Electronics Parts
Reproduced by PHI.
instruction manual revision
Supersedes SMR-4701
GENERAL
This revision outlines changes that have occurred since the printing of your instruction manual. Use this information to correct your manual.
INSTRUCTION MANUAL AFFECTED:
68P81069A94-0 DC Power Supply Instruction Manual
REVISION DETAILS:
Replace PEPS-33602-0 Sheets 1, 2, and 3 of 3 with the attached revised diagrams, PEPS-33602-A, Sheets 1 and 2 of 2. Replace PEPS-33603-0 with PEPS-33603-A.
ATTACHMENTS:
R-1011B DC Power Supply Schematic Diagram and Circuit Board Detail Sheets 1 and 2 of 2.....PEPS-33602-A
R-1011B DC Power Supply Electrical Parts Lists and Parts Location Photographs....................................
lechnical writing rervicer
page 1 of 1
SMR-4990 12/18/85
MOTOROLA, INC.
SMR4701
INSTRUCTION MANUAL REVISION
This revision supercedes SMR4374, SMR4416, SMR4470, and SMR4694.
GENERAL
This revision outlines changes that may have occurred since the printing of your instruction manual. Use this information to correct your manual.
INSTRUCTION MANUAL AFFECTED
68-81069A94-0 DC POWER SUPPLY 0-40V, 0-40A Model R1011B
REVISION DETAILS
R1011B DC POWER SUPPLY Schematic diagram & circuit boards details Motorola No. PEPS-33602-0 and PEPS-33603-0
A.(sheet 1 of 3)
- 1.) Jumper from J101 to card edge contact "U" is omitted.
- 2.) P.C. Board conductor from U103, pin 5 to card edge contact "D" is cut.
- 3.) C109 is omitted.
B.(sheet 3 of 3)
- 1.) Connection of switch SW3 to J6-A is omitted and reconnected directly to Q205 emitter.
- 2.) Connection of switch SW3 to J6-U is omitted and reconnected directly to Q205 base.
- 3.) R109 is changed to 15k ohm, 1/2W, 5%, Motorola P/N 06-125A77.
Page 1 of 2 11/18/83
SMR4701
C.(sheets 1 & 3 of 3) 1.) Transistors Q1-Q4 are changed to M9715's (P/N 48-869715). 2.) Zener diode VR1 is changed to 91-volts (P/N 48-83461E16). 3.) A capacitor, 0.1ufd, 10%, (P/N 08-82096J18) is added from the cathode of SCR101 to ground.
Early R1011B power supplies used M9966's for Q1-Q4. Any replacement of these 4 transistors must use the same Motorola part number; never mix M9966's with M9715's. Using M9715's for Q1-Q4 requires that zener diode VR1 be changed to 91-volts (P/N 48-83461E16). All R1011AA power supplies must use M9966's for Q1-Q4.
D.(sheets 1 & 3 of 3)
- 1.) Capacitor C114 is changed to 0.1ufd disc (P/N 21-82372C09).
- 2.) Resistor R126 is changed to 3900hms, 1/2W, 5% (P/N 06-125A39).
- 3.) Capacitor C103 is changed to 0.001ufd disc (P/N 21-82428B48).
- 4.) Change connection on capacitor C107 as shown in partial schematic below.
E.(sheets 2 & 3 of 3) Diode CR5 located on the overvoltage broad has been replaced by a 56k ohm, 1/4W, 5% resistor (P/N 06-124A91).
F.(sheets 1 & 3 of 3)
1.) Resistor R159 located on the control board has been changed to 9.09k ohm, 1/8W, 1% (P/N 06-10621C87).
Page 2 of 2 11/18/83
| REFERENCE | MOTOROLA | Proppintioni | ••• | REFERENCE |
MOTOROLA
PART NO. |
DESCRIPTION |
|---|---|---|---|---|---|---|
| SYMBOL | PART NO. | DESCRIPTION | 31MBUL | resistor, fixed; ±5%; 1/4 W: | ||
| 60 00000 4 01 | motor ac: 115 V | unless otherwise stated | ||||
| JU-OUDEOM3 | constanty same in the T | R1 thru 4 | 17-82350A01 | 3; 1 W | ||
| connector fixed: uE: | B6. 7 | 17-80326A54 | 150; 25 W | |||
| A | 00 00000 1 07 | Capacitor, fixed, dr. | 88 | 17-80326A53 | 50: 25 W | |
| 21 (NEU 4) | 23-00-320A27 | 4100, 100 V | 89 | 17-80326A50 | 25: 25 W | |
| 25 | 23-80312A28 | 4900; 50 V | 810 | 17-80312434 | .01: 20 W | |
| 26 | 23-80312A29 | 36000; 75 V | 011 | 6.125489 | 47k + 10%: 1/2 W | |
| 27 | 23-80312A28 | 4900; 50 V |
n:1
010 |
6.1250/1 | 470 + 10% 1/2 W | |
| 8,9 | 21-83596E29 | .02 + 80-20%; 2000 V | 812 | 0-120041 | SOL: 5/4 18 | |
| 211 thru 14 | 21-83596E29 | .02; 2000 V | 813 | 0-124491 | ||
| 215. 16 | 21-84211B01 | .01 feed-thru: 250 V | R14, 15 | 6-80327A88 | 2K ± 1%; 1/2 W / | |
| 17 thru 19 | 8-863550 | 4 ± 10%; 200 V | R16 | 18-80320A68 | variable; 500 W | |
| 20 21 | 21-84211801 | 01 feedabru: 250 V | 817 | 6-80327A86 | 20 ± 1%; 1/2 W | |
| 20, 21 | 2 000211001 | 01 + 10%- 400 V | B18 | 6-80327A85 | 15 ±1%; 1/2 W | |
| 0.02090000 | R19 | 17-837834 | 3.9 W.W. | |||
| 23 | 21-82428811 | P20 | factory selected | |||
| :30 | 21-83596E29 | .02 + 80-20%; 2000 V | DO4 | 10 00000 461 | variable: 5k + 10% | |
| R24 | 10-00320001 | veriable: 3k | ||||
| capacitor, fixed; uF: | H25 | 18-80328A00 | ||||
| 2101 | 21-82428B35 | .01 + 80-20%; 500 V | H26 | 5-8032/A92 | 0.28 I 1/9, 1/2 W | |
| 0102 | 23-84762H11 | 33 ±20%; 15 V | R27 | 6-80327A93 | 51.3K ±1%; 1/2 W | |
| 103 | 21-82428B48 | .001 ± 10%: 100 V | R28 | 17-82177B26 | 0.16; ±10%; 10 W | |
| 104 | 8.82905606 | 0.47 + 10% 50 V | R29 | 6-125C49 | 1k ± 10%; 1/2 W | |
| 105 | 21.82537838 | 1000 nE + 3%: 100 V | R101, 102 | 6-83175C89 | 7.5k ±1% | |
|
2100
000 |
2102037030 | B103 | 6.83175C93 | 10.2k ±1% | ||
| 206 | 8-829050-14 | .01 ± 10%; 100 ¥ | D104 | 6.90327489 | 3.32k + 1%: 1/2 W | |
| C107 | 21-82537B38 | 1000 pF ± 3%; 100 V | D105 | C 90707400 | 3 97k + 1% 1/2 W | |
| 2108 | 21-840046 | 100 pF ± 10%; 500 V | A100 | 0.00721A04 | 152 + 10/2 1/2 IA | |
| 2110, 111 | 21-82428B35 | .01 + 80-20%; 500 V | H106 | 0-00/2/484 |
1.005 (2017) 116 (77)
116 (77) |
|
| 2112 | 8-82905G06 | 0.47 ± 10%; 50 V | R107 | 6-125A49 | ||
| 113 | 21-82428B35 | .01 + 80-20%; 500 V | R108 | 6-125B12 | 390K; 1/2 W | |
| 114 | 21.82372000 | 0.1 + 80-20%: 25 V | R109 | 6-125A77 | 15k; 1/2 W | |
| N16 140 | 21.00100044 | 01 - 70.30% 100 V | B110 | 6-125A73 | 10k; 1/2 W | |
| 110, 110 | 21-02420511 | B112 | 6-125A73 | 10k: 1/2 W | ||
| 7 17 | 8-82906J18 | U.T ± 10%; 200 V | D112 | 6.125475 | 12k: 1/2 W | |
| 2119, 120 | 23-80319A67 | 1000; 35 V | T110 | 6.105467 | 5 6k 1/2 W | |
| 5121, 122 | 23-82601A29 | 60 + 150-60%; 50 V | R114 | 0-120M0/ | wariahia FAL + 1024 - 1/3 MF | |
| 2123 | 23-84762H01 | 4.7 ± 10%; 35 V | R117 | 18-83452117 | Vanable: JOK # 10 76, 1/2 VY | |
| 2125, 126 | 21-82428B35 | .01 + 80-20%; 500 V | R118 | 6-125A83 | 27K | |
| 197 | 21-82428811 | 01 + 70-30%: 100 V | R119 | 6-125A25 | 100; 1/2 W | |
| R120 | 6-125A09 | 22; 1/2 W | ||||
| diada- (cas nota) | B121 | 6-125A61 | 3.3k; 1/2 W | |||
| · | didde. (See note) | D400 | 6.125435 | 270: 1/2 W | ||
| 381, 2 | 48-82525G20 | SHICON | D404 | 6 126 4 73 | 10k- 1/2 W | |
| JR3 📈 | 48-869963 | SILCON | D124 | 6 94640070 | 73 91 - 196 · 1/8 M | |
| ;R4 | 48-82466H13 | silicon | H125 | 0-04040070 | 200-1014 | |
| 287 | 48-84751H05 | bridge, rectifier | R126 | 6-125A39 | 380, 112 99 | |
| CR101 thru 107 | 48-82420C16 | silicon | R127 | 6-125A51 | 1.2K; 1/2 W | |
| 108 109 | 48-82466H13 | silicon | R128 | 6-125A61 | 3.3k; 1/2 W | |
| 20112 (brox 114 | 48-82420016 | silicon | R129 | 6-125A49 | 1k; 1/2 W | |
| 40-02420010 | silioon | B130 | 6-125A73 | 10k; 1/2 W | ||
| 2010146-0.104 | 40-02400/110 | silicon | R131 | 6-125A25 | 100; 1/2 W | |
| SR123 (nnu 124 | 40-824007113 | shicon | 0122 | 6.125445 | 680: 1/2 W | |
| 0102 | 6 1064 40 | 1k: 1/2 W | ||||
| circuit breaker: | F133 | 0 1200407 | 500/2119 10/ | |||
| CB1 | 80-80326A68 | relay, .05 amp. 400 ohms | R134 | 0-120A97 | 100K, 112 VV | |
| R135 thru 138 | 6-125A57 | 2.2K; 1/2 W | ||||
| indicator lamp: | R139 | 6-125B22 | 1 meg; 1/2 W | |||
| 351 3 | 65-83358H06 | type 327, 28 V | R140 | 6-125A73 | 10k; 1/2 W | |
| 00 00000 | .)Fo +=:, =o + | R141 | 6-125A97 | 100k; 1/2 W | ||
| furo. | B142 | 6-125A41 | 470: 1/2 W | |||
| ruse: | 121/2 | 6.125425 | 100: 1/2 W | |||
| -1 | 65-139131 | 15 amp; 250 V ac | 0444 | 6 106465 | 1.8k- 1/2 W | |
| ÷2 | 64-868957 | 3/8 amp; 120 V ac | H144 | 0-120400 | 104 10 10 | |
| R145 | 6-125A73 | 10K; 1/2 VV | ||||
| connector, receptacle: | R146 | 6-125A20 | 62; 1/2 W | |||
| 11 | 9-868661 | female lack: RED | R148, 149 | 6-125A73 | 10k; 1/2 W | |
| 2 | 0.86862 | female jack: BLK | R150 | 6-125A25 | 100; 1/2 W | |
| 10 | 16.963076 | POST binding: RED | R151 | 6-125A49 | 1k; 1/2 W | |
| 40-003920 | POST, binding, ACU | B152 | 6-125B14 | 470k: 1/2 W | ||
| 4 | 40-82921KU1 | FUEL, Dinding: Grin | 8163 | 6-125437 | 330: 1/2 W | |
| 15 | 46-863924 | PUSI-binding: BLK | 6.106100 | 47k 1/2 W | ||
| 16 | 9-80328A75 | remale; 22-contact | n 104 . | 6 1064 11 | 470-1/2 14/ | |
| 17 | 28-83258D01 | male; ac socket | H10/ | 0-120441 | 470-1/2 W | |
| 1101 | 9-84231802 | female, single contact | H158 | 0-120A41 |
4/U, 1/2 W
0.006 - 40/ 5// 14/ |
|
| R159 | 6-10621C8/ | 3.USK ± 170; 1/4 W | ||||
| coil, rf: | R162 | 6-124A97 | 100K | |||
| 2 . | 25-80326464 | 0.4H @20 amp. | R163 | 6-125A49 | 1k; 1/2 W | |
| 4 | 24-80326407 | RF1 | 8201 thru 205 | 6-125C25 | 100 | |
| 24-000200001 | REI | 8206 thru 209 | 6-125C01 | 10 ± 10% | ||
| 24-00320490 |
tsF i
familia haad |
8211 thru 214 | 6-125070 | 1 ± 10% | ||
| .o, / | 10-03900801 | HEILING DEGN | 2716 three 910 | 17 82177821 | 1k: 5 W | |
| 516 10 USU 417 | 17.90177801 | 1k: 5 W | ||||
| meter: | M220 (1110 229 | 11 "Q4 111 Q4 1 | int or an | |||
| /11 | 72-80324A43 | voltage | controllad matilian ( | |||
| 12 | 72-80324A44 | current | controlled rectilier: (See nois) | |||
| SCR2 | 48-84973C01 | SHICON | ||||
| connector | SCR101 | 48-84755H01 | silicon | |||
| 4 | 28-82365002 | PLUG, single contact (phono) | ||||
| - | 20-020000002 | . www. ungle contact (priorie) | switch: | |||
| transistan (ann nata) | SW1 | 40-80312A42 | rotary | |||
| SW2 | 40-80312443 | rotary | ||||
| 21 thru 4 | 48-869715 | NPN; type M9715 | 2442 | 40-00312040 | toggio | |
| 25 | 48-869967 | NPN; type M9967 | SW3 | 40-83378K01 | ||
| 2101 | 48-869256 | PNP: type M9256 | SW4 | p/o CB1 | ||
| 102 103 | 48-860570 | NPN: type M9570 | SW5 | 80-80332A62 | thermostat | |
| 1104 106 | 48,9806.10 | NPN- type M9842 | SW8 | 80-80332A60 | thermostat | |
| 40.000042 | field offect | |||||
| 100 | 40-009902 | transformer. | ||||
| 2108 | 48-869643 | PNP: type M9643 | T . | 05 00074400 | POWER (main) | |
| 2109 | 48-869649 | PNP; type M9649 | 11 | 23-803/4486 | ||
| 2110 | 48-869642 | NPN; type M9642 | T2 | 25-80374A83 | POWER (auxiliary) | |
| 201 thru 204 | 48-869968 | PNP type M9968 | ||||
| 3205 | 48-860067 | NPN: type M9967 | integrated circuit: (see note) | |||
| U101, 102 | 51-84320A13 | operational amplifier | ||||
| U103 | 51-84621K43 | optical coupler | ||||
PL-5386-C
| SYMROL | DESCRIPTION | |
|---|---|---|
| 3111001 | ||
| VB1 | 48.83461516 | Zener type: 91 V |
| VB2 | 48-83461E03 | Zener type: 3.3 V |
| VR101 | 51-84621K38 | + 18 V |
| VF102 | 51-84621K39 | -18 V |
| VR103 | 51-84621K40 | + 12 V |
| VR106, 107 | 48-84390A01 | Zener type; 6.8 V |
| cable: | ||
| W1 | 30-80328A71 | power: 3-conductor with plug |
| V¥2 | 30-659004 | CABLE, COAXIAI; HOSIO (P4) |
| meci | nanical parts | |
| 2-1376 | NUT; 3/8-32 × 1/2 × 3/32" | |
| 2-2878 | NUI; 1/4-20 × 7/16 × 3/16"; | |
| 2,120802 | NUTE 9.20 - 5/16 - 1/8 - 5/20% 35 | |
| 2- + COOSE | used | |
| 2-131435 | NUT; 4-40 × 1/4 × 3/32"; 5 used | |
| 2-132616 | NUT; 6-32 × 1/4 × 3/32 × 1/8"; 14 used | |
| 2-80325A82 | NUT, spring: 11 used | |
| 2-80326A93 | ||
| 2-7003 | NU1; 8-32 × 5/16 × 1/8"; 2 USed | |
| 2-131865 | NUT 1/4-28 x 3/8 x 3/32" 6 used | |
| 3-1209 | SCREW, machine: 10-32 × 1/2"; 4 used | |
| 3-6990 | SCREW, machine; 1/4-20 × 3/4"; 4 used | |
| 3-7229 | SCREW, machine; 6-32 × 3/8"; 2 used | |
| 3-7364 | SUREW, machine; 6-32 × 1/4"; 2 used | |
|
3-7300
3.0661 |
SCREW, machine: 8-32 × 3/4"; 5 USed | |
| 3-115341 | SCREW, machine: 8-32 × 1" | |
| 3-121856 | SCREW, machine; 1/4-20 × 1/2"; 6 used | |
| 3-122330 | SCREW, machine; 6-32 × 3/8"; 4 used | |
| 3-134268 | SCREW, lock; 4-40 × 7/16"; 4 used | |
| 3-136253 | SCREW, lock; 5-32 × 5/8"; 8 Used | |
| • | 2-139304 | SCREW, lock, 10-52 X 5/6 , 16 bseu |
| 3-139539 | SCREW, machine: 6-32 × 5/16": 2 used | |
| 3-410095 | SCREW, machine; 1/4-20 × 5/8"; 8 used | |
| 3-80315A47 | SCREW, 8-32 × 3/8"; 3 used | |
| 3-7164 | SCREW, machine; 6-32 × 1/4"; 6 used | |
| 3-1930 | SCREW, machine; 4-40 × 3/8"; 5 USED | |
| 3-7178 | SCREW, machine; 4-40 X 5/16": 2 used | |
| 4-1792 | WASHER, flat; .281 × .625 × .090"; | |
| 4 used | ||
| 4-7564 | WASHER, flat; .391 × .750 × .067" | |
| 4-7650 | LUCKWASHER, #6 Internal; 9 Used | |
| 4-7031 | LOCKWASHER: 3/8 internal | |
| 4-7658 | LOCKWASHER; #10 internal: 24 used | |
| 4-114583 | LOCKWASHER; #4 split; 4 used | |
| 4-400449 | LOCKWASHER; 1/4" split; 17 used | |
| 4-80326A95 | WASHER | |
| 4-60336AD1 | WASHER shoulder & used | |
| 4-7657 | LOCKWASHER: #8 external | |
| 4-7670 | LOCKWASHER; 1/4" internal; 5 used | |
| 4-7698 | LOCKWASHER, 3/8" internal; 6 used | |
| 4-8210 | WASHER, flat; .391 × .562 × .016 | |
| 4-9788 | LOCKWASHER, 5/15" Internal; 3 used | |
| 7-80312A03 | BRACKET, panel support: 2 used | |
| 7-80326A69 | HEAT SINK; 4 used | |
| 7-80326A70 | HEAT SINK | |
| 7-80326A72 | HEAT SINK | |
|
7-80326A77
7,83724K01 |
BRACKET mounting: 2 used | |
| 7-80328A78 | BRACKET, mounting: 2 used | |
| 7-80326A75 | HEAT SINK; 5 used | |
| 7-80326A92 | BRACKET | |
| 7-80332A87 | BRACKET | |
|
5-02003UU2
29-3025 |
LUG, soldering: 2 used | |
| 29-5247 | LUG, soldering | |
| 29-132678 | LUG, soldering; 3 used | |
| 29-867966 | LUG, 8 used | |
| 29-867967 | LUG, 30 US60 | |
| 29-867965 | LUG: 9 used | |
| 29-80330A70 | TERMINAL, 16 used | |
| 9-82684G02 | SOCKET, light and jewel (GRN) | |
| 9-82684G04 | SOCKET, light and jewel (AMBER) | |
| 29-5247 | LUG, soldering | |
| 29-667966 |
LUG, 5 USEQ
KNOB: 4 used |
|
| 29-859118 | LUG, faston: 4 used | |
| 39-10184A53 | CONTACT, receptacle; 2 used | |
| 14-83820M02 | INSULATOR, thermostat | |
| 26-80375A69 | HEAT SINK, U clip | |
| 25-84275L01 | HEAL SINK | |
|
37-007834
37-80228A07 |
GROMMET | |
| 42-80348A39 | CLIP: 2 used | |
| 42-82465C01 | CLAMP, capacitor mounting | |
| 42-83415C01 | CLIP, capacitor mounting | |
| 43-847528 | BUSHING, spacer; 2 used | |
|
REFERENCE
SYMBOL |
MOTOROLA
PART NO. |
DESCRIPTION |
|---|---|---|
| 43-80326A94 | SPACER, bushing insulator | |
| 43-84475K01 | STANDOFF, threaded; 4 used | |
| 47-80329A35 | BAR BUSS | |
| 75-80322A01 | FEET, rubber; 4 used | |
| 42-80313A70 | TIE WRAP | |
| 54-83042H67 | LABEL | |
| 43-84654B02 | BUSHING, threaded; 4 used | |
| 47-80375A70 | ROD, threaded; 2 used | |
| 47-80348B38 | BAR | |
| 55-80312A22 | HANDLE (BRN); 2 used | |
| 64-80374A80 | PANEL, front | |
| 15-80326A79 | HOUSING, shielded | |
| 14-859051 | INSULATOR, lug; 4 used | |
| 14-83799G01 | INSULATOR, terminal, male; 2 used | |
| 42-80313A70 | TIE WRAP; 4"; 57 used | |
| 54-83042H67 | LABEL | |
| 64-80326A80 | PLATE | |
| 54-83379A01 | LABEL, high voltage | |
| 9-82673A01 | SOCKET, transistor; 4 used | |
| 2-7003 | NUT, 8-32 x 5/16 x 1/8"; 2 used | |
| 7-80394A03 | BRACKET, mounting | |
| 14-83799G02 | INSULATOR, terminal, female; 2 used | |
| 39-10184A52 | CONTACT, plug; 2 used | |
| 49-80328A92 | BLADE, fan | |
| 13-80329A21 | GRILLE | |
| 15-80328A86 | COVER, fan |
note: For optimum performance, diodes, transistors, and integrated circuits must be ordered by Motorola part numbers.
R1011B DC Power Supply Schematic Diagram & Circuit Board Details Motorola No. PEPS-33602-A (Sheet 1 of 2) 1/10/86-PHI
IPONENT SIDE ** BD-CEPS-41781-0 SOLDER SIDE BD-CEPS-41782-0 SHOWN FROM COMPONENT SIDE OL-CEPS-41783-0 ***
aa aha ha bahara aha mara kara kara aha aha baha da baha da baha hara aha baha da baha da bahara da baha bahara
---------------------------------------RED-WHT
CURRENT LIHIT
10118/10 ---------------------------------------NEUTRAL IGP LINE FI (GRY-RED) 05 7A R-10118/240V LINE F2 (GRY-REC 3/164 TO SW8 (GRY-RED LINE F2
enciosed within , such as 20 V. Represents earth ground.
ted on real
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7. Factory selected part value
10. IF wired for 100 V R
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R1011B DC Power Supply Schematic Diagram & Circuit Board Details Motorola No. PEPS-33602-A (Sheet 2 of 2) 1/10/86-PHI
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