Global Specialties 1332A User Manual
1332A
REGULATED
DC POWER SUPPLY
Instruction Manual
M-00149
EDITION : 2- JULY, 2001
GLGL
OBOB
GL
GLGL
Global Specialties,LLC
22820 Savi Ranch Parkway
Yorba linda,CA 92887
WWW.globalspecialties.com
800-572-1028
AL SPECIALAL SPECIAL
OB
AL SPECIAL
OBOB
AL SPECIALAL SPECIAL
TIESTIES
TIES
TIESTIES
PCB Components Z-TR/01 PCB REV - 01
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Ref Designator Value
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RESISTORS
R1 1K,2W,5%,MOR
R2 0.1E,2.5W,5%,WW
R129* 33K,0.25W,5%,MFR
CAPACITORS
C1 0.1uF,50V,CD
C2 100uF,50V,EL
C3 10uF,50V,EL
DIODE
CR1 1N5402 X 2
TABLE OF CONTENTS
GENERAL INFORMATION............................ Page 1
SPECIFICATIONS......................................... Page 2
LOCATION AND DESCRIPTION OF
OPERATING CONTROLS.............................. Page 4
INSTALLATION.............................................. Page 5
PCB Components CHASSIS & FRONT PANELS
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Ref Designator Value
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CHASSIS
VARISTOR FOR 115V - 201K
FOR 230V - DNR 20D 361
FILTER YUNPEN EMI 6A/125V/250V
MAINS TRANSFORMER 650VA
INPUT FUSE FOR 115V - 5Amp TYPE T
FOR 230V - 2.5Amp TYPE T
FRONT PANEL
WW POT 1KE 1W X 2
WW POT 10KE 1W
WW POT 50E 1W
LED GREEN 3mm
LED RED 3mm
ON/OFF SWITCH DPST CHILLY 3022 6A /125V/250V
OPERATING INSTRUCTIONS....................... Page 6
POWER SUPPLY OPERATION .................... Page 8
SAFETY INSTRUCTION ............................... Page 9
OPERATING PRECAUTIONS........................ Page 10
CASE DISASSEMBLY AND ASSEMBLY....... Page 11
MAINTENANCE AND RECALIBRATION........ Page 11
SERVICE AND WARRANTY INFORMATION. Page 12
PART LIST.................................................... Page 13
SCHEMATIC AND BOARD LAYOUT.............. Page 20
LIST OF ILLUSTRATIONS
19
FIGURE 1. Location of operating controls...... Page 4
GENERAL INFORMATION
DESCRIPTION
The 1332A Power Supply is a high perfomance single
output DC power supply for industrial and laboratory
use. Performance with economy have successfully
been combined to provide a compact, fully solid state
instrument.
The output is continuously variable from 0 to 32V and can
supply 5A max, and can be adjusted continuously throughout the output range. The front panel CURRENT control
can be used to establish the output current limit (overload
or short circuit). When the supply is used as a constant
voltage source the VOLTAGE controls can be used to limit
the output voltage. When the unit is used as a constant
current source, CURRENT controls can be used to limit
the output current. The unit will automatically cross over
from constant voltage to current mode and vice-versa, if
the output current or voltage exceeds these preset limits. Output voltage and current are continuously monitored on two front panel meters.
The load terminals are provided on the front panel. Either
the positive or negative output terminal may be grounded
or the power supply can be operated floating at upto a
maximum of ±300VDC above ground.
All the outputs are floating i.e. neither the output positive
terminal nor the negative terminal (nor any point within the
regulator circuitry) is connected to ground.
The power supply is designed to operate in ambient
temperature of upto 40°C and full output may be drawn
continuously provided free air circulation is allowed.The
unit works from mains supply of 115V/230VAC, 47-63 Hz
with selectable Switch.
PCB Components 2 X Z-DPM/01 PCB REV - 01
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Ref Designator Value
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RESISTORS
R1 39K,0.25,5%,MFR
R2 470K,0.25W,5%,MFR
R3 1M,0.25W,5%,MFR
R4* SEL(INPUT)
R5 10K,0.25W,5%,MFR
R6 2K4,0.25W,5%,MFR
R7 330E,0.25W,5%,MFR
R8 330E,0.25W,5%,MFR
R9 6K8, 0.25W,5%,MFR
PRESETS
PR1 2.5K,LIN,VER (REF ADJ)
CAPACITORS
C1 220pF,50V,CD
C2 0.1uF,100V,MP
C3 0.01uF,50V,CD
C4 0.47uF,100V,MP
C5 0.1uF,100V,MP
C6 0.1uF,100V,MP
C7 10uF,50V,EL
C8 0.1uF,50V,CD
C9 10uF,50V,EL
C10 0.1uF,50V,CD
IC’s
IC1 7107 DECODER DRIVER
VR1 TL - 431
FND’s
DS1 TSD566 GREEN
DS2 TSD566 GREEN
DS3 TSD566 GREEN
LED’s
LED1* 3MM GREEN(VOLTAGE) FOR 'CV' MODE
LED2* 3MM RED (CURRENT) FOR 'CC' MODE
MISCILLANEOUS
J1 2.54PITCH,3PIN M
J2 NOT USED.
J3 2.54PITCH,4PIN M
1
18
PCB Components ZSDT-CT/05 PCB
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Ref Designator Value
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ZENERS
Z1 1N758, 10V, 0.4W
Z2 1N758, 10V, 0.4W
Z3 1N750, 4.7V, 0.4W
BRIDGE
BR1 10A/600V PC MTG BRIDGE
BR2 CSB-1, 100V/1A BRIDGE.
SPECIFICATIONS
Detailed specifications of the power supply are given in the
following table.
OUTPUT VOLTAGE : 0-32V DC continuously variable
with coarse and fine voltage
controls
LOAD CURRENT : 0-5 Amp max., continuously
variable with coarse and fine
controls
ICs
IC1 4N25 OPTO
IC2 7812
IC3 TL431
IC4 LM324
IC5 7812
IC6 TL431
IC7 79L05
IC8 7805
TRANSISTORS/FET/SCR
Q1 BC109
Q2 MPSA12
Q3 BC557
Q4 BC557
Q5 BC547
FET1 IRFP150
SCR1 2N6396
FET2 IRFP150
CONNECTORS
CON2 2.54mm PITCH, 12PIN M
CON3 2.54mm PITCH, 12PIN M L TYPE
CON4 2.54mm PITCH, 8PIN M
MISCELLANEOUS
TP1 RIM PIN MALE
TP2 RIM PIN MALE
TP3 RIM PIN MALE
TP4 RIM PIN MALE
TP5 RIM PIN MALE
TP6 RIM PIN MALE
SPADE CON 12H750
17
CONSTANT VOLTAGE MODE
REGULATION
LINE : Less than ± 0.01% +2mV for
±10% change in line voltage.
LOAD : Less than ± 0.01% + 2mV for load
change from zero to full load.
RIPPLE & NOISE : Less than 1mV rms max.
( 20Hz - 20MHz )
CONSTANT CURRENT MODE
REGULATION
LINE : Less than ± 0.1% +250µA
for ±10% change in line
voltage.
LOAD : Less than ±0.1% +250µA
for change in output voltage
from 0 volts to max.output
voltage.
RIPPLE & NOISE : 0.04% rms.(2.0 mA )
OUTPUT POLARITY : Floating w.r.t. ground.
OVERLOAD PROTECTION : Automatic overload and
short circuit protection.
TRANSIENT RESPONSE : 100µsecs to within 10mV of
set output voltage for load
change from 10% to 90%.
2
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