GW Instek GPS-2303, GPS-3303, GPS-4303, GPS-4302, GPS-4251 User Manual

DC Power Supply

MULTI-OUTPUT POWER SUPPLY USER MANUAL

GPS-2303/3303/4303/4302/4251 (Multi-Output)

USER MANUAL

GW INSTEK PART NO. 82PS-23030MD

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyrights. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

Good Will Instrument Co., Ltd. No. 7-1, Jhongsing Rd., Tucheng Cit y , Ta ipei Cou nt y 2 36, Taiwan.

Declaration of Conformity

GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng City, Taipei County 236, Taiwan

MULTI-OUTPUT POWER SUPPLY

USER MANUAL

GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.

No.69 Lushan Road, Suzhou New District Jiangsu, China.

declares that the below menti one d products

GPS-2303/3303/4303/4302

are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility (89/336/EEC, 92/31/EEC, 93/68/EEC) and Low Voltage Equipment Directive (73/23/EEC). For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Equipment Directive, the following standards were applied:

◎ EMC

EN 61326-1: Electrical equipment for measurement, control and laboratory

use –– EMC requirements (1997+A1: 1998)

Conducted and Radiated Emissions EN 55011: 1998

Current Harmonic EN 61000-3-2: 1995+A1: 1998+A2: 1998 +A14: 2000

Voltage Fluctuation EN 61000-3-3: 1995

-------------------------

Electrostatic Discharge EN 61000-4-2: 1995+A1:1998

Radiated Immunity EN 61000-4-3: 1996+A1:1998

Electrical Fast Transients EN 61000-4-4: 1995 Surge Immunity EN 61000-4-5: 1995 Conducted Susceptibility EN 61000-4-6: 1996 Voltage Dips/ Interrupts EN 61000-4-11: 1994

◎ Safety

Low Voltage Equipment Directive 73/23/EEC & amended by 93/68/EEC

EN 61010-1 : 2001 IEC 61010-1: 2001

USER MANUAL

Declaration of Conformity

GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng City, Taipei County 236, Taiwan

GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.

No.69 Lushan Road, Suzhou New District Jiangsu, China.

declares that the below menti one d products

GPS-4251(GPQ-2505D)

◎ EMC

EN 61326-1: Electrical equipment for measurement, control and laboratory

use –– EMC requirements (1997+A1: 1998)

Conducted and Radiated Emissions EN 55011: 1991+A1: 1997+A2: 1998

Current Harmonic EN 61000-3-2: 1995+A1: 1998+A2: 1998 +A14: 2000

Voltage Fluctuation EN 61000-3-3: 1995

-------------------------

◎ Safety

Low Voltage Equipment Directive 73/23/EEC & amended by 93/68/EEC

EN 61010-1 : 1993+A2 :1995 IEC 1010-1: 1990+A2 :1995

Electrostatic Discharge EN 61000-4-2: 1995

Radiated Immunity EN 61000-4-3: 1996+A1:1998

Electrical Fast Transients EN 61000-4-4: 1995 Surge Immunity EN 61000-4-5: 1995 Conducted Susceptibility EN 61000-4-6: 1996 Voltage Dips/ Interrupts EN 61000-4-11: 1994

iii

SECTION PAGE

1. INTRODUCTION........…… ……… ……… ……… ……… ……… 1

2. SPECIFICATIONS……………………………………………......

2-1 General………………………………………………………… 2-2 Operation Mode………………………………………………. 2-3 Constant Voltage Operation………………… ……………… . 2-4 Constant Current Operation…………………………………. 2-5 Tracking Mode………………………………………………... 2-6 Meter…………………………………………………………... 2-7 CH3 Output Specification……………………………………. 2-8 CH4 Output Specification……………………………………. 2-9 Insulation………………………………………………………

2 2 2 2 3 3 3 3 3 4

3. THEORY OF OPERATION..………………………………........ 4

4. PANEL CONTROLS AND INDICATORS....... .. ..…… ……… …

4-1 Front Panel……………………………………………………. 4-2 Real Panel……………………………………………………...

5. OPERATION INSTRUCTION…………………….……….........

5-1 Precaution……………………………………………………... 5-2 Setting Current Limit………………………………………… 5-3 Constant Voltage/ Constant Curre nt Ch ar acteri stic ……… .. 5-4 Operation Mode……………………………………………….

6. MAINTENANCE…......………………………… ……… …….......

6-1 Fuse Replacement…………………………………………….. 6-2 Line Voltage Conversion……………………………………... 6-3 Adjustments…………………………………………………… 6-4 Cleaning………………………………………………………..

8 10 11 11 11 12 13 19 19 19 20 24

SAFETY TERMS AND SYMBOLS

Please take a moment to review these safety terms and symbols which may appear in this manual or on Equipment to prevent damage to the Function Generators.

WARNING. Warning statements identify condition or practices that could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

DANGER High Voltage

ATTENTION refer to Manual

Protective Conductor Terminal

(ground) Earth Terminal

Frame or Chassis Terminal

FOR UNITED KINGDOM ONLY

NOTE: This lead/appliance must only be wired by competent persons WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with

the following code:

Green/ Yellow: Earth Blue: Neutral Brown: Live(Phase)

As the colours of the wires in main leads may not correspond with the colours marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol or Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is mark with the letter N or coloured Blue or Black. The wire which is coloured Brown must be connected to the terminal mark with

the letter L or P or coloured Brown or Red. If in doubt, consult the instructions provided with the equipment or contact the

supplier. This cable/appliance should be protected by a suitably rated and approved HBC mains fuse : refer to the rating information on the equipment and/or user instructions for details. As a guide, cable of 0.75mm² should be protected by a 3A or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used. Any moulded mains connector that requires removal / replacement must be destroyed by removal of any fuse & fuse carrier and disposed of immediately, as a plug with bared wires is hazardous if an engaged in live socket. Any re-wiring must be carried out in accordance with the information detailed on this label.

or coloured Green

MULTI-OUTPUT POWER SUPPLY USER MANUAL

1. INTRODUCTION

The regulated DC power supply series is designed to be used in applications such as powering operational amplifier, push-pull stages, logic circuit and definition systems where plus and minus voltages are required to track with an insignificant error. To represent an operation convenience, GPS-4302, GPS-4303 and GPS-4251 have four independent power supplies (while GPS-2303 has two and GPS-3303 has three) housed in a single package.

GPS-4302, GPS-4303 and GPS-4251

adjustable DC power supplies (while two for GPS-2303 and three for GPS-3303). A front panel switch selects one of three operation modes of independent, series and parallel. In the independent mode, the output voltage and current of each supply are controlled separately, and each supply is isolated up to 300V from output to chassis or output to output. In the tracking mode, both outputs are automatically connected in series or parallel, and the controls of the left supply adjust the magnitudes of both the positive and negative output voltages. Because the outputs are connected in a tracking configuration, any internal disturbance in the master supply (such as drift or ripple) will cause an equal percentage change in the outputs of both the supplies.

Each power supply (except CH3 for GPS-3303 and CH4 for GPS-4302&4303& is a completely transistorized, well-regulated, constant voltage/constant current supply that will provide full rated output voltage at the maximum output current or can be continuously adjusted throughout the output range. The front panel current controls can be used to establish the output current limit (overload or short circuit) when the supply is used as a constant voltage source (independent or tracking modes) and the voltage controls can be used to establish the voltage limit (ceiling) when the supply is used as a constant current source (independent mode only). The supply will automatically cross over from constant voltage to constant current operation (current limited operation in the tracking mode). Each power supply (CH1~CH4) has its own front panel meter that can measure output voltage or current. One power supply may be used as a CH1 supply controlling, one CH2 supplies furnishing various voltage or current for a system. When operate with the front panel mode switch in the tracking position, the instrument is automatically internally connected in auto-tracking configuration.

For audio production line, the continuous or dynamic load can be internally selected. When the connector (J111&J309) is connected to “ON” position the unit is suitable for audio power Amplifier application (Normal setting to “OFF” position).

consist of four identical, independent,

4251)

vii

MULTI-OUTPUT POWER SUPPLY

USER MANUAL

2. SPECIFICATIONS

2-1. General

Main Supply (switch selectable) : 100V/120V/220V ± 10%(230V +10%~-6%) 50/60Hz. Operation Environment

Storage Temperature & Humidity : -10℃ to 70℃.70% (maximum). Accessories : Operation Manual ×1.

Table 2-1:

MODEL

GPS-2303

GPS-3303

GPS-4303

GPS-4302

GPS-4251

Dimensions : 255(W) ×145(H) ×265(D) m/m Weight (kg) : 7.0 kg. 2-2. Operation Mode

(1) Independent : Two independent outputs and

(2) Series : Output from 0 to rating volts at rating amperes each.

(3) Parallel : Output from 0 to double rating amperes at rating

2-3. Constant Voltage Operation

(1) Output voltage range : 0 to rating voltage continuously adjustable. (2) Regulation : Line regulation≦0.01% + 3mV.

REPLACED FUSE TYPE RATES INPUT TEST LEAD Independent Series Para 100V/120V 220V/230V WATTS VA 0~30V×2

0~3A×2 0~30V×2 0~3A×2 0~30V×2 0~3A×2 0~30V×2 0~2A×2 0~25V×2 0~0.5A×2

60V 3A 60V 3A 60V 3A 60V 2A 50V

0.5A

30V 6A 30V 6A 30V 6A 30V 4A 25V 1A

:Indoor use.

Altitude up to 2000m. Ambient temperature 0℃ to 40℃. Relative humidity 80% (maximum). Installation category II. Pollution degree 2.

Current

≦3A

T6A 250V T6.3A 250V T6.3A 250V T5A 250V T2.5A 250V

T3A 250V 350 450 0 2

T3.15A 250V 420 550 1 2

T3.15A 250V 420 550 2 2

T3A 250V 320 420 2 2

T1.25A 250V 150 185 4 0

CH3: 2.2~5.2V output for GPS-4302/4303, 3~6V

output for GPS-4251, Fixed 5V for GPS-3303.

CH4: 8~15V output for GPS-4302/4303/4251.

Output from 0 to rating volts and 0 to rating amperes.

: Output from 0 to double rating volts at rating amperes.

volts.

: Load regulation≦0.01%+3mV(rating current≦3A). : Load regulation≦0.02%+5mV ( rating current>3A).

4A≦

Current<10A

USER MANUAL

(3) Recovery time :≦100μs (50% load change, minimum load 0.5A ). (4) Ripple & Noise :≦1mVrms (5Hz-1MHz ). (5) Temperature coefficient :≦300ppm/℃.

2-4. Constant Current Operation

(1) Output current range : 0 to rating current continuously adjustable. (2) Regulation : Line regulation≦0.2% + 3mA.

: Load regulation≦0.2% +3mA.

(3) Ripple current :≦3mArms.

2-5. Tracing Operation

(1) Parallel Operation

Regulation : Line regulation≦0.01% + 3mV.

: Load regulation≦0.01%+3mV (rating current≦3A).

≦0.02%+5mV (rating current >3A).

(2) Series Operation

Regulation : Line regulation≦0.01%+5mV.

: Load regulation≦300mV.

A. Positive and Negative supply (Fig 5-4) CH2 tracking error ≦0.5%+10mV of the CH1

(No load, with load add load regulation≦300mV)

B. Single supply (Fig. 5-3)

2-6. Meter

A. Display A : 3 digits panel meter×2 (0.5” Red LED display). Display V : 3 digits panel meter × 2 (0.5” Green LED display). B. Accuracy :OUT ON±(0.5% of rdg + 2 digits)

:OUT OFF±(0.5% of rdg+8 digits)(When the output of

the GPS-2303 is set to OFF, its voltage meter and

current meter can not preview)

C. Voltmeter : 99.9V of full scale. D. Ammeter : 9.99A of full scale.

2-7. CH3 Output Specifications

(1) Regulation : Line regulation≦5mV, load regulation≦15mV. (2) Ripple & Noise : ≦2mVrms. (3) Outout Voltage range : GPS-4302/4303: 2.2~5.2V±8% continuous adjustment,

GPS-3303 fixed 5V±8% continuous adjustment, GPS-4251 3~6V±8% continuous adjustment

(4) Output current : 3A for GPS-3303&4302, 1A for GPS-4303, 2.5A for

GPS-4251.

2-8. CH4 Output Specifications

(1) Regulation : Line regulation≦5mV, load regulation≦10mV. (2) Ripple & Noise :≦2mVrms. (3) Outout Voltage range : GPS-4302/4303/4251: 8~15V±8% continuous

adjustment.

MULTI-OUTPUT POWER SUPPLY

USER MANUAL

(4) Output current : 1A

USER MANUAL

2-9. Insulation

Between chassis and output terminal : 20MΩ or above (DC 500V). Between chassis and AC cord : 30MΩ or above (DC 500V).

3. THEORY OF OPERATION

The power supply consists of an AC input circuit and transformer; a bias supply consisting of an rectifier, filter, pre-regulator and reference voltage source; a main regulator circuit consisting of the main rectifier and filter, a series regulator, a current comparator, a voltage comparator, a reference voltage amplifier and a relay control circuit. The circuit element consists of integrated circuit U101, U102, U103, U104, U105, U108.

The circuit arrangement is shown as block diagram in Fig. 3-1. The circuitry is discussed with reference to the block diagram function description. Single phase input power is applied to transformer through the input circuit.

Auxiliary rectifier D1021~1024 provides a bias voltage, filtered by capacitor C103, C104 for the preregulator. U101, U108 that provides a regulator voltage for elements of action.

The main rectifier, a full wave bridge rectifier provides the power which is filtered by capacitor, C1021 and then regulated via a series regulator and delivers to the output.

U105 acts as a current limiter. When current is over predetermined rating it is

activated and decreases the current.

U102 provides a reference voltage for U103, U105.U103 is an inverter amplifier.U104 is a comparator amplifier which compares reference voltage and feedback voltage, and then delivers to Q103, Q104, which then calibrates the output voltage.

Q113 is activated when the unit is overload. It controls Q103 current magnitude which limits the output current.

The relay control circuit provides limited power dissipation in series regulator.

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