Leader LPS-151 User manual

$15
LPS-151/152
dc tracking power supply
instruction manual
LEADER
FOR PROFESSIONALS WHO KNOW
THE DIFFERENCE

LPS-151/152
DC TRACKING POWER SLIEPLY
TABLE OF CONTENTS
LDESCRIPTION
2.
FEATURES ..
3. SPECIFICATIONS .1
4. CONTROLS AND CONNECTORS 2
5* OPERATING PRECAUTIONS .,4
5.1 Input Power ,4
5.2 Output Terminals 4
5.3 General 4
5.4 Environmental Considerations 4
6, POWER SUPPLY OPERATION 4
6.1 4- 6VRange Source 4
6.1.1 Operation at aConstant Voltage —4
6.1.2 Operation Using Current Limiting 4
6.2 ±25VRange Sources 4
6.2.1 Fixed Tracking Mode, Constant Voltage Operation *4
6.2.2 Variable Tracking Ratio Mode, Constant Voltage Operation 5
6.2.3 Operation Using Current Limiting 5
6.2.4 Voltage Settings Above 25V, Constant Voltage Operation 5
6.2.5 Voltage Settings Above 25V, with Current Limiting 5
7, CALIBRATION PROCEDURES .. ,5
7.1 Preparation 5
7.2Adjustment of Meter Zero with Power On 6
7.3Adjustment of the VoItmeter with Pow'er On 6
7.4 Ammeter Adjustments 6
7.5 Connections for Other AC Line Voltages 7
8, PARTS LISTS ...... 8
8J LPS-151 Parts List 8
8.2
LPS-152 Pirns List iO
9, BLOCK DIAGRAMS, PC BOARDS, AND SCHEMATICS .12

Figure 1-1* DC Tracking Power Supply
1.
DESCRIPTION
The LPS- 15 1/152 DC Tracking Power Supplies each pro-
vide three regulated voltage sources, covering the 0to 6V, 0
to 25V and 0to -25V ranges. The +25V and -25V range
sources can also be used in avoltage tracking mode. These
power supplies are equipped with abuilt-in voltmeter and
ammeter so that the output conditions for each section of the
supply can be monitored individually.
2.
FEATURES
1. The +25V and —25V sources can be used in avoltage
ratio tracking mode.
2. Asource of 50V may be obtained by connecting the load
across the +25V and -25V terminals.
3. Voltage and current settings are made via front panel con-
trols and can be monitored on the built-in voltmeter and
ammeter.
3.
SPECIFICATIONS
Voltage and Current Ranges
Model Output Voltage
Range Output Current
Range
0to 6Vdc Oto 3A
LPS-151 0to25Vdc 0to0.5A
0to-25Vdc Oto 0.5A
0to 6Vdc 0to5A
LPS- 152 0to25Vdc OtolA
Oto-25Vdc OtolA
Tracking Voltage: In the ratio tracking mode, the
—25V source tracks the +25V
source by an adjustable ratio of
50 to 100%
Voltmeter: 0to 7volts and 0to 30 volts on a
dual scale. The meter range and
polarity are determined by pres-
sing the appropriate METER
switch.
Voltmeter Accuracy: 5% of the full scale reading
.
Ripple:
Line Regulation
(output stability):
Load Regulation:
Less than 3mVp.p
Less than 3mVplus 0.01% of the
input change for a10% change of
line voltage.
Less than 3mV plus0.0i%of the
load value from no load to full
load.
Ammeter: LPS-15 1:0to 0.6 amperes and 0
to 3.5 amperes on adual scale.
LPS452: 0to 1.2 amperes and 0
to 6amperes on adual scale.
The meter range and polarity are
determined by pressing the ap-
propriate METER switch.
1

Ammeter Accuracy:
Insulation Voltage;
Circuit Protection:
5%of the full scale reading.
1500 Vac applied for one minute
between one of the ac input ter-
minals and the case of the power
supply.
Overload protection circuit with
automatic resetting by sensing a
constant current.
Power Consumption;
Heat Sink
Temperature Range:
LPS-151: approx. 120VA
LPS-i52; approx. 220V
A
At room temperature (23 to 25°C)
85°C (185°F) with 100% load.
Operating Temperature
Range
Operating Humidity
Range
Storage Temperature
Range
Size {W XHXD)
Weight:
Supplied Accessories:
0^ to 35°C (32" to 95°F)
30 to 85% (non-condensing)
-20 to -H70"C(-4to 158°F)
LPS-151: 8V2 X5^4 X 13 in.
215 X132 X332 mm.
LPS-152: 8»/2x5V4 x14'/k in.
215X132 X360 mm.
LPS-151: 13y2!bs.;6.1 kg
LPS-152: l5V4lbs.;7,5kg
Instruction Manual
4. CONTROLS AND CONNECTORS
Figure 4-1. Front Panel
Front Panel, Refer to Figure 4-1
.
POWER Switch Press to turn on power. Press
again to release button and turn
off power.
Pilot lamp
METER selector
switches
©
©
@REFERENCE/±25V
Control
Lights when power is on.
These switches assign the volt-
meter and ammeter to one of the
ranges. (3) is for the +25V source.
(4) is for the —25V source, and
(5) is for the +6V source.
This provides output voltage
level setting for the +25V and
-25V range sources.
QTRACKING RATIO
Selector Switch
In the FIXED position, the REF-
ERENCE/±25V control (6) sets
both 25V sources to the same
magnitude but opposite polarity.
In the VARIABLE position, ratio
tracking of the -25V source
using the +25V source as arefer-
ence is possible.
Case ground
terminal
This terminal is connected di-
rectly to the case
(9)TRACKING RATIO
Control
This control determines the track-
ing ratio for the —25V source.
When the TRACKING RATIO
selector switch is in FIXED, this
control is disabled.
2

COM terminal This is the common point for the ©VOLTAGE +6V
+25V and -25V sources. This
terminal is internally connected control
to COM terminal (16) for the 6V ®Voltmeter
source.
i-25V Source
output terminal ©Voltmeter
©CURRENT This sets the output current limit Zero adjust
control for the +25V source. It is adjust- 0Handle
LPS-151: +0.5A able from OA to the full load cur-
EPS- 152: -HA rent rating. ©Ammeter
Zero adjust
—25V Source
Kiy output terminal @Ammeter
©CURRENT This sets the output current limit
control for the -25V source. It is adjust-
LPS-151:-0.5A able from OA to the full load cur-
LPS-152:-1A rent rating. Rear Panel, Refer
©6V Source
output terminal 0AC Cord
©COM terminal Common terminal for the 6V
source. This terminal is internally
connected to COM terminal (10)
for the +25Vand —25Vsources.
0Fuse
©CURRENT This sets the output current limit
control for the 6V source It is adjust- 0Heat sink
LPS^151: 3A able from OA to the full load cur-
EPS- 152: 5
A
rent rating.
This sets the output voltage for
the -h 6V source.
Gives voltage indication in the
+25V and +6V ranges, selected
by one of the METER (3), (4), and
(5) buttons.
Gives current indication in the
±25V and +6V ranges, selected
by one of the METER mode (3),
(4), and (5) buttons.
to Figure 4-2.
Power cord, 3-wire grounded
EPS- 151:
120V operation, 2Aslow blow
240V operation, lA slow blow
EPS- 152:
120V operation, 3Aslow blow
240V operation, L5A slow blow
Dissipates heat to ensure proper
power supply operation.
Figure 4-2* Rear Panel
3

5. OPERATING PRECAUTIONS
5.1 INPUT POWER
Line voltage should be within ±10% of rated voltage
(lOOV, 120V, 200V or 234V), Units shipped within theU.S.
are set for 120Vac. Permissible operating range is 108 to 132
Vac. To adapt the unit to other voltages, see Section 7.5.
5.2 OUTPUT TERMINALS
1.Connecting COM terminal (10) or (16) to case ground ter-
minal (8) renders both COM terminals grounded to the
case,
2. In the case where avoltage output in the 25 to 50 volt range
is obtained by aconnection across the +25V and —25V
terminals, ensure that both COM terminals are un-
grounded ,
3. In all cases, ensure that connections to the output terminals
of the power supply are made with lead wire of asufficient
rating for the current being drawn from the supply.
5.3 GENERAL
1
.
ITie red zones on the voltmeter and ammeter indicate out
of specification readings. Do not operate the power supply
under conditions that cause red zone readings.
2. When replacing the fuse, ensure that the AC line cord has
been removed from the power source.
3. When long lead wires are used to connect aload to the
power supply, currents may be induced in the leads by
stray electromagnetic fields. These currents may cause os-
cillation in the power supply. In order to maintain the
power supply stable, connect an appropriately valued elec-
trolytic capacitor at the load. Also note that the use of long
lead wires tends to increase voltage regulation.
5,4
ENVIRONMENTAL CONSIDERATIONS
1.Avoid operation of the power supply under the following
conditions:
a. Dusty environments
b. High humidity
c. Poor ventilation
d. Near other power sources
e. Exposed to direct sunlight
2. The ambient temperature for power supply operation
should be in the range from 0"^ to 35^C {32° to 95“F)
.
3. Ensure that the power supply is kept well ventilated. This
includes keeping the area around the supply clear* espe-
cially the heat sink section.
6, POWER SUPPLY OPERATION
For all operation, the power cord must be connected to an
AC power source of the proper voltage and frequency. The
unit is turned on by pushing the POWER button (1) in. The
green LED (2) should light when the unit is turned on.
6.1 +6V RANGE SOURCE
1,Operation at aConstant Voltage
a. Press the +6V METER selector button (5),
b. Turn the CURRENT control (17) fully clockwise.
c. Use the voltage control (18) to set the voltage to the de-
sired level on the VOLTMETER (19), (Clockwise r-ota-
tion of the control causes voltage to increase.)
d. The load may now^ be connected to the supply.
2. Operation using current limiting.
a. Press the ±6V METER selector button (5).
b. Ensure that the CURRENT control (17) is turned to its
ful 1yCOunterclockw1se positi on
.
c. Using the VOLTAGE control (18), set the output vol-
tage to the desired level
.
d. Short circuit output terminals (15) and (16). The volt-
meter will indicate zero volts.
e. Using the CURRENT control (17), set the current limit-
ing to the desired value on the AMMETER (23). Rotat-
ing the CURRENT control (17) clockwise raises the
current limit setpoint.
f. Remove the short circuit from output terminals (15) and
(16).
g. The load may now^ be connected to the supply.
6.2 ±25V RANGE SOURCES
The ±25Vsources may be operated in one of two modes.
In the FIXED TRACKING mode* the output of the -25V
source will track the setting ofthe -^25V source in a1:1ratio.
In the VARIABLE TRACKING RATIO mode, the output of
the -25Vsource tracks the output of the +25V source by a
ratio that is adjusted by the user,
6.2.1. FIXED TRACKING mode, constant voltage opera-
tion
a. Push the REFERENCE ±25V METER selector button
(3),
b. Ensure that the TRACKING RATIO selector switch
(7)is in the FIXED position.
c. Turn CURRENT controls (12) and (14) to their fully
clockwise po.sitions.
d. Turn the REFERENCE ±25Vcontrol (6) to the desired
positive voltage level. This will also cause the —25V
source to be set at the same voltage with the opposite po-
larity.
To confirm this, press the TRACKING METER —25V
selector button (4). It should indicate the same voltage
magnitude as the ±25V range reading, within 1.5%,
After the comparison, press the REFERENCE -I-25V
METER selector button (3) again.
e. The load may now be connected to the supply.
4

6.2.2. Variable Tracking Ratio Mode, Constant
Voltage Operation.
a. Push the +25V METER selector button (3).
b. Ensure that the TRACKING RATIO selector switch (7)
is in the VARIABLE position.
c. Turn the CURRENT controls (12) and (14) to their fully
clockwise positions.
d. Turn the REFERENCE/-^ 25V control (6) to the desired
positive voltage,
e. Push the TRACKING —25V METER selector button (4).
f. Using the TRACKING RATIO control (9), set the
—25 Vsource to the desired negative voltage.
After the TRACKING RATIO control (9) has been set,
turning the REFERENCE/F25V control (6) will cause
the —25V source to change its voltage with respect to
the +25V source by the established ratio,
g. Press the REFERENCE ~'“25V METER selector button
(3).
h. The load may now be connected to the supply.
6.2.3. Operation Using Current Limiting
a. Set the CURRENT controls (i2) and (14) to their fully
counterclockwise positions,
b. Set the ±25V sources to the desired voltage by using
one of the procedures above. Disregard the step involv-
ing turning the current controls fully clockwise.
c. Ensure that the REFERENCE +25V METER selector
button (3) is pressed in.
d. Short circuit the COM and +25V terminals (10) and
(11). The voltmeter will indicate zero volts.
e. Set the +0.5A (-1- 1Aforthe EPS- 152) CURRENT con-
trol (12) to the desired level of current limiting as indi-
cated on the AMMETER (23). Rotating the CURRENT
control (12) clockwise raises the current limit setpoint.
f. Remove the short circuit from the COM and +25V ter-
minals (10) and (11).
g. Press the TRACKING —25V METER selector button
'(4),
h. Short circuit the COM and —25V terminals (10) and
(13). The voltmeter will indicate zero volts,
i.Set the -0.5A(-IAfor the LPS- 152) CURRENTcon-
trol (14) to the level of current limiting desired as indi-
cated on the AMMETER (23). Rotating the CURRENT
control (14) clockwise raises the current limit setpoint.
7. CALIBR,
The following instructions detail the calibration of the
meters and voltage outputs for the LPS- 151/152 power sup-
ply, Also included are transformer tap changing directions so
that the ptiwer supply may be used with aline voltage other
than 120Vac,
7
A
PREPARATION
I.Adjustment of Meter Mechanical Zero.
a. Turn the powder supply off and allow one minute for all
capacitors to discharge.
b. On the voltmeter, turn the zero adjust screw (20) so that
the pointer indicates exactly zero.
c. When the pointer is at zero, rotate the screw asmall
amount in the opposite direction to the direction it was
last turned in step bto relieve movement tension.
j. Remove the short circuit from the COM and -25V ter-
minals (10) and (13).
k. Press the REFERENCE +25V METER selector button
(3).
l. The load may now be connected to the supply.
6.2.4. Voltage Settings Above 25V, Constant Voltage
Operation
.
Used together, the ±25V sources will produce amaximum
output of 50V. However, in this mode the 6V output
may not be used.
a. Press the REFERENCE -^25V METER selector button
(3).
b. Set CURRENT controls (12) and (14) to their fully
clockwise position.
c. Ensure that the TRACKING RATIO selector switch
(7)is in the FIXED position.
dTurn the REFERENCE/F25V control (6) such the the
voltmeter (18) indicates one -half of the desired voltage
value. Remember that the voltmeter will only indicate
one-half of the voltage value between the ±25V output
terminals (11)and (13).
e. The load may now be connected to the supply. The
maximum current available at 50V is OJA (1 .OA with
the LPS- 152).
6.2.5. Voltage Settings Above 25V with Current Limiting.
a. Set the CURRENT controls (12) and (14) to their fully
counterclockwise positions.
b. Set the +25V sources for above 25V operation by using
the procedure above. Disregard the step involving turn-
ing the current controls fully clockwise.
c. Ensure that the REFERENCE +25V METER selector
button (3) is pressed in.
d. Shon circuit the +25V and -25V terminals (II) and
(13). The voltmeter will indicate zero volts.
e.Set the F0. 5A(+1Afor the LPS- 152) CURRENTcon-
trol (12) to the desired level of current limiting as indi-
cated on the AMMETER (23). Rotating the CURRENT
control (12) clockwise raises the current limit setpoint.
f. Remove the short circuit from the F25V and —25V ter-
minals (1 i) and (13).
g. The load may now be connected to the supply.
PROCEDURES
d. On the ammeter, turn the zero adjust screw (22) so that
the pointer indicates exactly zero.
e. When the pointer is at zero, rotate the screw asmall
amount in the opposite direction to the direction it was
last turned in step dto relieve meter movement tension,
2. Initial Control Settings
Set the front panel controls to the positions indicated.
VOLTAGE F6V (18) full counterclockwise
CURRENT controls (12), (14), (17) .full counterclockwise
REFERENCE ±25V (6) full counterclockwise
TRACKING RATIO selector (7) HXED
REFERENCE F25 METER selector (3) pushed in
5

7.2 ADJUSTMENT OF METER ZERO WITH
POWER ON
1.+25V range
a. Turn the pcjwer on.
b. Push the REFERENCE H-25V METER selector button
(3
)
,
c. On circuit board T-2665A, adjust VR502 (0 ADJ) until
the voltmeter indicates zero.
2. -25Vrange
a. Push the TRACKING —25V METER selector button
(4)
.
b. On circuit board T-2665A, adjust VR504 (0 ADJ) until
the voltmeter indicates zero.
3. +6V range
a. Push the +6V METER selector button (5).
b. On circuit board T-2665A, adjust VR506 (0 ADJ) until
the voltmeter indicates zero.
7.3 ADJUSTMENT OF THE VOLTMETER
WITH POWER ON
1. T25V range
Push the REFERENCE +25V METER selector button
(3)
.
b. Connect aknown calibrated voltmeter across the +25V
output (+)and COM (—)terminals.
c. Set the REFERENCE/±25V control so that the volt-
meter reads 25.0Vdc.
d. On circuit board T-2665A, adjust VR501 (VOLTS) so
that the voltmeter indicates 25V.
2. —25Vrange
a. Pu.sh the TRACKING “25V METER selector button
(4)
.
b. Connect aknown calibrated voltmeter across the —25V
output (+) and COM (-) terminals,
c. Confirm that the voltmeter and the power supply volt-
meter both indicate —25V.
3. +6V range
a. Push the T6V METER selector button (5).
b. Connect aknown calibrated voltmeter across the +6V
(+) and COM (— )terminals.
c. Use the +6V voltage control to make the voltmeter indi-
cate 6.0Vdc. The power supply voltmeter should indi-
cate 6volts.
7,4 AMMETER ADJUSTMENTS
1. +0.5A range
a. Push the REFERENCE +25V METER selector button.
b. Set the +0.5A (lA for the EPS- 152) CURRENT con-
trol fully clockwise.
c. Connect aknown calibrated ammeter and a12.5W
(25Wfor the LPS- 152) rheostat as shown in Figure 7-1
.
d. Set the REFERENCE/±25V control so that the voltme-
ter indicates 25V.
e. Adjust the rheostat so that the installed ammeter indi-
cates 0.5A (1.OA for the EPS- 152).
f. On circuit board T-2665A, adjust VR503 (FULL
SCALE) for areading of +0.5A(1.0Afor the LPS- 152)
on the power supply ammeter,
2. —25V range
a. Push the TRACKING “25V METER selector button,
b. Connect aknown calibrated ammeter and a12.5W
(25W for the LPS-152) rheostat as shown in Figure 7-2,
c. Set the -0.5A(-lA for the LPS- 152) CURRENT con-
trol fully clockwise.
d. Set the REFERENCE/±25V control so that the voltme-
ter indicates —25V.
e. Adjust the rheostat so that the installed ammeter indi-
cates -0.5A(- 1,0A for the LPS- 152).
f. On circuit board T-2665A, adjust VR505 (FULL
SCALE) for areading of —0.5A(—1OA for the LPS-
152) on the power supply ammeter.
3. 3Arange (5A for the LPS- 152)
a. Push the +6V METER selector button.
b. Connect aknown calibrated ammeter and a18W (30W
for the LPS- 152) rheostat as shown in Figure 7-3.
c. Set the 3A(5 Afor the LPS- 152) CURRENT control
fully clockwnse,
d. Set the REFERENCE/±25V control so that the voltme-
ter indicates +6V.
e. Adjust the rheostat so that the installed ammeter indi-
cates 3.0A(5.0Afor the EPS- 152).
f. On circuit board T-2665A, adjust VR507 (FULL
SCALE) for areading of 3A (5A for the EPS- 152) on
the power supply ammeter.
^1
p
n
-25VCO\
00 099c RHEOSTAT
Figure 7-1,
6

7.5 CONNECTIONS FOR OTHER
AC LINE VOLTAGES
The LPS-151/152 units shipped within the U.S. are con-
nected for 120Vac operation. Other line voltages may be
used after transformer tap connections are changed. Refer to
Figure 7-4 for proper connections, and to Table 7-1 for per-
missible voltage ranges and proper fuse ratings.
-+
99 oooo RHEOSTAT
Table 7-1
Figure 7-3.
Fermissible Voltage Variations and Fuse Ratings
For Tap Connections
Nominal Value Operating Voltage Range Fuse Rating LPS-151 LPS-152
lOOV 90-1 lOV 2A
slow blow
3A
slow blow
120V108- 132V
200V 180-220
V
lA
slow blow
1.5A
slow blow
220V 198-242
V
240V 216-264V
Terminal arrangement
Figure 7-4. Transformer Tap Connections

8. REPLACEMENT PARTS LIST
8.1LPS-151 Parts List.
SCH.
No.
%mbol
No. I>t;!icr]ption
TRANSISTORS
1/3 0201 NPN 2SD7I7-0
1/3 Q202 FNP 2SB755-0
1/3 Q301 NPN 2SC405-0
1/3 Q302 PNP 2SB755-0
1/3 Q401 NPN 2SD845-0
1/3 Q402 PNP 2SA50,‘i-0
CAPACITORS
1/3 C101 Eleclrcilytic lOOV lOOOjLtF
1/3 C102 Mica 500V 330pF ±10%
]/3 C103 Electrolytic 50V 0.47/iF ±20%
1/3 C201 Plastic 400V 0.047mF ±10%
1/3 C202 Plastic 400V 0.047piF ±10%
1/3 C203 Electrolytic 25 V10,000)^F
1/3 C204 Plastic 50V O.OljuF ±10%
1/3 C205 Plastic 50V0.0047/aF ±10%
J/3 C206 Electro!>l:ic 50V lO^F
1/3 C207 EleclmlyLic 16V 1,000^F
1/3 C20S Plastic 63V ImF ±10%
1/3 C301 Plastic 400V 0.047juF ±10%
1/3 C302 Plastic 400V 0.047^F ±10%
1/3 C303 Electrolytic 63V 2200ii£F
1/3 C304 Plastic 50 V0,0022^F ±10%
1/3 C305 Plastic 50V0.0022|aF ±10%
1/3 C306 Electrolytic 50VlO/iF
1/3 C307 Elec [o>ly tic 50V220^F
1/3 C308 Ceramic 50V0. l/iF
1/3 C309 Plastic 50V 0.0033jnF ±10%
1/3 C40i Plastic 400V 0,047ptF ±10%
1/3 C402 Plastic 400V 0.047/iF ±10%
1/3 C403 Electrolytic 63V 2200^F
1/3 C404 Plastic 50V 0.0 l^F ±10%
1/3 C405 Plastic 50V 0.0033^F ±10%
1/3 C406 Electrolytic 50V HVF
1/3 C407 Elecifiolytic 50V 220|uF
J/3 C40S Ceramic 50V O.ljtiF
RESISTORS
1/3 RlOl Wine wound 310 ±5% 5W
1/3 R102 Wire wound 1300 ±5% 3W
1/3 R103 Wire wound 2500 ±5% 3W ,
1/3 R104 Wire wound loon ±5% low
1/3 R105 Metal 8800. ±1% '/aW
1/3 R106 Metal lOkO ±\% lAW
1/3 R107 Metal lOkO ±1%
1/3 R108 Carbon 15kll ±5% >/4W
1/3 R109 Carbon 2200 ±5%
1/3 RllO Carbon lOkO ±5% “AW
1/3 Rill Carbon 3.3fc.O ±5% AW
1/3 RII2 Carbon lOkO ±5% AW
i/3 R1I3 Catbon 15kO. ±5% AW '
1/3 R114 Carbon 1.2kO ±5% AW
SCH.
No.
Symbol
No. Description
DIODES
1/3 DIOI Rect 200V !A 1DZ61
1/3 DI02 Rect 200V lA 1DZ61
1/3 DI03 Zener 7.5V 1Z75
1/3 DKM Det 35V 1S1588
1/3 D105 Det 35V LSI 588
1/3 D106 Det 35 V1S15S8
1/3 D107 Zener 6.2V I.SZ5I
1/3 DIOS Zener 9.1V RD9IEB
1/3 D109 Rect 200V lA 1DZ6I
1/3 D201 Rect 150V3A 3CDI3
1/3 D202 Rect 150V3A 3CDI3
1/3 D203 Rect lOOV 3A 3BZ61
1/3 D204 I>et 35V 1S1588
1/3 D205 E>ct 35V 1S158S
1/3 D206 Det 35V 1S1588
1/3 D207 Det 35V 1S1588
1/3 D20S Det 35 VIS 1588
1/3 D209 Det 35V IS 1588
1/3 D210 Rect 200V lA 1DZ61
1/3 D301 Rect 200V lA 1DZ61
1/3 D302 Rect 200V lA 1D261
1/3 D303 Rect 20OV lA 1DZ61
1/3 D304 Det 35 V1S1588
1/3 D305 Det 35V IS 1588
1/3 D306 Del 35 VISI588
1/3 D307 Det 35VISI588
1/3 D308 Del 35 VIS1588
1/3 D309 Det 35V IS 1588
1/3 D310 Rect 200V lA 1DZ61
1/3 D401 Rect 200V lA 1DZ61
i/3 D402 Rect 200V lA 1DZ63
1/3 D403 Rect 200V lA IDZ61
1/3 D404 Rect 200Y lA IDZ63
1/3 D405 Del 35V 1SI 588
1/3 D406 Det 35V IS1588
1/3 D407 Det 35 V1SI 588
1/3 D408 Del 35V IS 1588
1/3 D409 Rect 200V lA 1DZ61
1/3 D410 Det 35V IS1588
2/3 D501 Etet 35V ISl 588
1/3 PLiOl LED SLP-751
iCs
1/3 ICIOI Op Amp LM301AP
1/3 IC201 Op Amp 1458
1/3 IC301 Op Amp 1458
1/3 IC401 Op Amp 1458
TRANSISTORS
1/3 QlOl NPN 2SC495-0
1/3 Q102 PNP 2SA1012
1/3 QI03 NPN 2SCiSJ5-0
1/3 Q104 NPN 2SC495-0
1/3 Q105 PNP 2SA505-0
8

SCH.
No.
Symbol
No. Description
VARIABLE RESISTORS
t/3 VR40I Wire wound 3k08 ±S% I.2W
1/3 VR4<12 Wire wound lOkOB ±5% 1.2W
1
2/3 VR50I Metal glaze 220£1 'AW
2/3 VR^02 Metal glaze IkO AW
2/3 VR503 Meta] glaze 1kil AW
2/3 VR504 Metal glaze mi AW
2/3 VR505 Metal glaze mi 'AW
2/3 Meta] glaze m'l 'AW
2/3 VR507 Metal glaze IkO AW
TRANSFORMER
1/3 FT 101 PowerTransformer J-459A
CONNECTORS
!/3 JIOl XH Connector rB2E-XH
lXHP-2
1/3 J201 XH Connector /B2B-XH
lXHP-2
1/3 J202 XH Connector fB3B-XH
IXHP 3
1/3 mi XH Connector rB2B-XH
lXHP-2
1/3 J302 XH Connector JB3B-XH
lXHP-3
1/3 J401 XH Connector rB3B-XH
lXHP-3
1/3 J402 XH Connector fB3B-XH
lXHP-3
3/3 J403 XH Connector rB9B-XH
lxHP-9
1/3 J50! XH Connector rB2B-XH
lXHP-2
1/3 J502 XH Connector /B2B-XH
lXHP-2
FUSE &HOLDER
1/3 F501 90 —132V ST-4 2A
F501 Holder FH-032
ISO —264V ST-41 A
METERS
2/3 M301 H-1690
M502 H-1693
SWITCHES
1/3 S401 Slide SSB022L=9
T/3 S501 Power SDG.^P-E
2/3 S502 Pnsb S-3-14
TERMINALS
1/3 101 Metal Terminal D- 1376
A
1/3 201 Leader Terminal Gray
1/3 202 Leader Terminal Gray
1/3 301 Leader Terra in al Gray
1/3 302 Leader Terminal Gray
1/3 401 Leader Terminal Gray
PRINTED CIRCUIT BOARDS
1/3 T-2672B Power Supply
2/3 T-2665A Meter
SCH,
No.
Symbol
No. Description
RESISTORS
1/3 R20] Carbon l.Ikil ±5% AW^
1/3 R202 Wire wound 5im ±5% lOW
1/3 R203 Carbon mn AW
1/3 R2(H
1/3 R205
1/3 R206 Carbon 7,5kil ±5% AW
1/3 R207 Metal ISOkO AW
1/3 R208 Metal ITOD ±1% AW
1/3 R209 Carbon 750£i AW
1/3 R2I0 Wine wound 0J5£1 ±5% 5W
1/3 R211 Carbon 2200 ±5% AW
1/3 R212 Metal 39k£l ±1% AW
1/3 R213 Carbon 330S1 ±5% AW
1/3 R214 Carbon \m ±5% AW
1/3 R2J5 Metal 9.lk£l ±]% AW
1/3 R2I6 Wire wound 0.10 ±5% 2W
1/3 R301 Carbi^n 5.6kO ±5% AW
1/3 R302 Metal 5600 ±5% IW
1/3 R303 Carbon S20£l ±5% AW
1/3 R304 Carbon 15kil ±5% AW
1/3 R305 Metal lOOkO ±\% 'AW
1/3 R306 Metal 3600 ±1% AW
1/3 R307 Metal 3.6kO ±1% AW
1/3 R308 Wine w'i]und 1.50 ±5% 5W
1/3 R309 Carbon 2200 ±5% AW
1/3 R3I0 Metal 3,9kO ±1% AW
1/3 R3II Carbon 1.5kO ±5% 'AW
1/3 R312 Carbon ISO ±5% AW
1/3 R3I3 Metal 2.2kO ±1% 'AW
1/3 R3 14 Wire wound 0,10 ±5% 2W^
1/3 1R401 Carbon 5.6kO ±5% '/iW
1/3 R402 Carbon non AW^
1/3 R403 Carbon 56017 ±5% 'AW
1/3 R404 Carbon 15kO. ±5% 'AW^
1/3 R405 Metal 560n ±1% 'AW
1/3 R406 Carbon [,5kO. ±5% 'AW
1/3 R407 Carbon ISO ±5% 'AW
1/3 R40g Carbon 2200 ±5% 'AW
1/3 R409 Wire wound 1.50 ±5% 5W
1/3 R410 Metal 3.9kO ±1% AW
1/3 R411 Metal 22 kO ±1% 'AW
1/3 R412 Meial lOkO ±\% 'AW^
1/3 R413 Metal 22kO ±1% 'AW
1/3 R414
1/3 R413 Wire w'Ound 0.10 ±5% 2W^
2/3 R501 Carbon 3900 ±5% AW
2/3 R502 Carbc>n 470SI ±5% AW
2/3 R503 Metal I2k0 ±1% AW
2/3 R504 Metal 200£1 ±1% AW
2/3 R505 Metal 2.4kO ±1% 'AW
2'
3
R306 Carbon lOOkSl ±5% 'AW
R307 Carbon 56kO ±5% AW
2/3 R508 Carbon 5SkO ±5% AW
VARIABLE RESISTORS
1/3 VR201 Wire wound lOkOB ±5% 1.2W^
1/3 VR202 Wire wound 3kOB ±5% 1.2W
1/3 VR301 Wire wound lOkOB ±5% L2W
]/3 VR302 W'i rewound 3kOB +5% 1.2W
9

8.2 LPS-152 Parts List
SCH,
No.
Symbot
No. D'oscription
1/3 Q301 NPN 2SC4^5-0
mQ303 PNP 2SB755-0
1/3 Q401 NPN 2SDS45-0
1/3 Q402 PNP 2SA505-0
CAPACITORS
1/3 CiOl Electrolytic lOOV 1000/aF
1/3 C102 Mica 500V330pF ±10%
1/3 C103 Electrolytic 50V 0.47iwF ±20%
1/3 C201 Plasric 40t)V 0.047ftF ±10%
1/3 C202 Pliislic 400V 0.047^F ±10%
1/3 C203 Electrolytic 25VlO.OOOjuF
1/3 C204 Plastic 50V 0O^F ±10%
1/3 C205 Plastic 50V 00047jLtF ±10%
1/3 C206 Electroljtic 50V lO/iF
1/3 C207 Electrolytic 16V 1.OOO^F
1/3 C208 Plastic 63V l^F ±10%
1/3 C30! Plastic ;400V 0047/aF ±10%
1/3 C302 Plastic ,400V 0.047/lF ±!0%
1/3 C303 Electrolytic !63V 2200jiiF
1/3 C3fM Plastic 50V D.tXJ22^F ±10%
!/3 C305 Plastic 50V 0.0022jLtF ±10%
1/3 C306 Electrolytic 50V lOjaF
1/3 C307 Electrolytic I50V 220/xF
1/3 cm Ceramic 50V0. I^F
1/3 <Plastic 5t)V 0.0033juF ±10%
1/3 C401 Plastic 400V 0.047^iF ±10%
1/3 C402 Plastic 400V 0,047mF ±10%
i/3 C403 Electrolytic 63 V2200fiF
1/3 C404 Plastic 50V O.OlptF ±10%
1/3 C405 Plastic 50V 0.0033/itF ±10%
1/3 C406 Electrolytic 50V lOjuiF
1/3 C407 Electrolytic 50V 220/i.F
i/3 C408 Ceramic 50V 0. \fL¥
RESISTORS
1/3 RlOl Wire wound 3111 ±5% 5W
1/3 R102 Wire wound non ±5% 3W
1/3 R103 Wine wound 2500 ±5% 3W
1/3 R1(H Wire wound lOOO +5^ low
1/3 R105 Metal 8800 ±\% 'AW
1/3 R106 Metal lOkO ±1% '/tW
1/3 R107 Metal lOkO ±1% AW
1/3 RIOS Carbon 15kO ±5% AW
1/3 R109 Carbon 220Q ±5% AW
1/3 RllO Carbon lOkO ±5% AW
1/3 Rin Carbon 3.3kO ±5% AW
1/3 R112 Carbon lOkO ±5% AW
1/3 R1 13 Carbon V5kO ±5% AW
1/3 RM4 Carbon 1.2kO ±5% AW'
1/3 R201 Carbon 22kO ±5% AW
1/3 R202 Wire wound 500 ±5% lOW
1/3 R203 Carbon 8200 ±5% AW
1/3 R204 Wire wound 0.10 ±5% 2W
1/3 R205 Wire wound 0.10 ±5% 2W
1/3 R2D6 Carbon 7.5kO ±5% AW
1/3 R207 Metal I50k0 ±1% AW
1/3 R20S Metal lOOO ±1^ AW
SCH.
No.
Symbol
No. Deseriptioo
DIODES
1/3 DlOl Rect 200V lA IDZ6I
1/3 Dm2 Reel 2tX)V lA IDZ6!
1/3 D103 Zener 7.5V IZ75
J/3 D104 Det 35V ISI588
1/3 D105 Det 35V IS 1588
1/3 D106 Det 35V IS 1588
1/3 D107 !Zener 6.2V1SZ51
1/3 DIOB Zener 9.1V RD91EB
1/3 D109 Rect 200V 1A [DZ61
1/3 D20I Rect 150V6A 6CD13
1/3 D202 Rect 150V6A 6CD13
1/3 D203 Rect lOOV 3A 3BZ5I
1/3 D204 Det 35V IS1588
1/3 D205 Del 35V ISI588
1/3 D206 Det 35V IS 1588
1/3 D207 Det 35V ISI588
1/3 D20S Det 35V ISI588
1/3 D209 Det 35V ISI588
1/3 D210 Rect lOOV 3A 3BZ61
i/3 D301 Reel 2tm lA 1DZ61
1/3 D302 Reel 200V lA 1DZ61
1/3 D303 Rect 200V lA 1D261
1/3 D304 Det 35 V1S15S8
1/3 D305 Det 35 V1S1588
1/3 D306 Del 35V IS1588
1/3 D307 Det 35V 1S1588
1/3 D30S Det 35V 1S1588
1/3 D30^ Del 35V IS1588
1/3 D310 Rect 200V lA 1DZ6I
1/3 D401 Rect 200V lA IDZ61
1/3 D402 Reel 200V lA IDZ61
1/3 D403 Reel 200V lA 3DZ61
1/3 D404 Reel 200V lA 3DZ61
1/3 D405 Det 35V IS1588
1/3 D406 Det 35 V151588
1/3 D407 Det 35V 1S1588
1/3 D408 Det 35V IS 1588
1/3 D409 Rect 200V lA 1DZ61
1/3 D410 Etet 35 V1S15SS
2/3 D501 Det 35 V131588
1/3 PLIOI LED SLP-751
ICs
1/3 ICIOI Op Amp LM301AP
1/3 IC201 Op Amp 1458
1/3 rc30i Op Amp 1458
1/3 IC401 Op Amp 1458
TR.ANSISTORS
1/3 QIOI NPN 2SC495-0
1/3 Q102 PNP 2SA1012
1/3 Q103 NPN 2SC1 815-0
1/3 Q104 NPN 2SC495-0
1/3 Q105 PNP 2SA505-0
1/3 Q201 NPN 2SD717-0
1/3 Q202 PNP 2SB755-0
1/3 Q203 1PNP 2SB755-0
10

SCH.
No.
Symbol
No. Description
VARIABLE RESISTORS
2/3 VR503 Metal glaze lld^
2/3 VR504 Metal glaze Ik! 2
2/3 VRm Metal glaze IkO
2/3 VR506 Metal glaze IkO '/iW
2G VR507 Metal glaze Ikfi A'W
TRANSFORMER
1/3 PTlOl Power Transformer J-4 60A
CONNECTORS
1/3 JlOl XH Connector rB2B-XH
lXHP-2
1/3 J201 XH Connector fB2B-XM
lXHP-2
1/3 J202 XH Connector /B3B-XH
lXHP-3
1/3 J30I XH Connector fB2B-XH
lxHP-2
1/3 J302 XH Connector JB3B-XH
txHP-3
1/3 J40I XH Connector /B3B-XH
lXHP-3
1/3 J402 XH Connector fB3B-XH
lXHP-3
3/3 J403 XH Connector fE9B-XB
lxHP-9
1/3 J501 XH Connector rB2B-XH
lXHP-2
1/3 J502 XH Connector rB2B-XH
lXHP-2
FHSE& holder
1/3 F501 90 —132V ST-4 3A
ISO —264V ST^4 1.5 A
F501 Holder FH-032
METERS
2/3 M501 H-1692
2/3 M502 H-1691
SWITCHES
1/3 S401 Slide SSB022 L=9
1/3 S501 Power SDG5P-E
2/3 S502 Push S-3-14
TERMINALS
1/3 101 Metal Terminal D- 1376
A
1/3 201 Leader Terminal Gray
1/3 202 Leader Terminal Gray
1/3 301 Leader Terminal Gray
1/3 302 Leader Tern]inal Gray
1/3 401 Leader Terminal Gray
PRINTED ClRCUITBOARDS
1/3 T-2672B PowerSupply
2/3 T-2665A Meier
SCH.
No,
Symbol
No. Description
RESISTORS
1/3 R209 Carbon 750! 1±5% 'AW
1/3 R230 Wire wound 0.25a ±5% 5W
1/3 R23
1
Carbon 220Q ±5% 'AW
1/3 R212 Metal 39kn 'AW
1/3 R213 Carbon 330!2 ±5% 'AW
1/3 R2I4 Carbon isa ±5% AW
1/3 R2I5 Meta] 9.1ka ±\% AW 1
3/3 R236 Wire wound o.ia ±5% 2W
1/3 R301 Carbon 5.6k!'i ±5% l^W
3/3 R302 Metal 560a ±5% IW
1/3 R303 Carbon B20n ±S% 'AW
1/3 R304 Carbon 15k!2 ±5% VzW
1/3 R305 Metal lOOkO ±1% AW
1/3 R306 Metal 560Q ±1% 'AW
1/3 R307 Metal 5.6kQ ±1% AW
1/3 R30S Wire w^ound i0.50 ±5% 5W
1./3 R309 Carbon 1500 ±5% 'AW
1/3 R310 Metal 39k£2 ±1% 'AW
1/3 R311 Carbon l.5kQ ±5% AW
1/3 R312 Carbon isa ±5% AW
LG R313 Metal 2.2k£2 ±]% AW
1/3 R314 Wire wound 0.1 a±5% 2W
1/3 R401 Carbon 5.6k£l ±5% AW
1/3 R4B2 Carbon S20O ±5% AW
1/3 R4I13 Carbon 560Q ±5% AW
1/3 R404 Carbon I5ka ±5% AW
1/3 R405 Metal 5600 ±]% AW
1/3 R406 Carbon 1.5k£I ±5% AW
1/3 R407 Carbon 180 ±5% AW
1/3 R408 Carbon ’150£1 ±5% AW
1/3 R409 Wire wound 0,50 ±5% 5W
1/3 R410 Metal 39kO AW
1/3 R4U Metal 22kO ±\% AW
1/3 R412 Metal lOkO ±1% AW
1/3 R413 Metal 22kO ±\% AW
1/3 R414
1/3 R415 Wire wound 0.10 41 2W
2^3 R501 Carbon 3900 ±5% 'AW
2G R502 Carbon 4700 ±5% AW
2/3 R503 Metal I2k0 ±1% 'AW
2/3 R504 Metal 2000 ±1% AW
2/3 R505 Metal 2,4kO ±1% 'AW
2'3 R506 Carbon lOOkO ±5% 'AW^
2'3 R507 Carbon 56kO ±5% 'AW
2/3 R50S Carbon 68kO ±5% AW^
VARIABLE RESISTORS
1/3 VR20I Wire wound l0k!^B ±5% 1.2W
1/3 VR202 Wire wound 3kOB ±5%1.2W
i/3 VR30! Wire wound lOkOB 1.2W
1/3 VR302 Wire wound 3kOB ±5% l.2W^
1/3 VR401 Wire wound 3kOB ±5% 1,2W^
]/3 VR402 Wire wound lOkOB ±5% L2W
2/3 VR501 Meta! glaze 2200 'AW
2/3 VR502 Metal glaze Ik!) AW
11

9. BLOCK DIAGRAM, P.C. BOARDS, AND SCHEMATICS
POWER CIRCUIT
ACTIVATING AND
BREAKING THE
CONTROLCIBCUIT
Jk^RECTIFIER
CIRCUIT
VOLTAGE
REGULATION
CIRCUIT
CURRENT
REGULATION
CIRCUIT
Oto^eV OUTPUT
RECTIFIER
CIRCUIT
t
VOLTAGE
REGULATION
CIRCUIT
CURRENT
REGULATION
CIRCUIT
“O
0to+25V OUTPUT
+26V (REFERENCE
VOLTAGE) £
RECTIFIER
CIRCUIT
VOLTAGE
REGULATION
CIRCUIT
CURRENT
REGULATION
CIRCUIT
i*- O
0TO -25V OUTPUT
Figure 9-1 ,Block Diagram
12

Figure 9-2, LPS- 151/152 Block Diiagram

r
Figure 9-4. LPS-lSl/152 Power Supply Board, T2672A
14

Figure 9-S. LPS-151 Power Supply Board, T2672A
15

Figure 9-6 .LPS*I S2 Power Supply Board, T267 2A.
16

[voltage|
REPERENCE
TRACKlf^G
[-1-^V 1
LPS-151 152
’fO,SA +1A
-O.SA
3ASA
Figure %7 LPS 151/152 Meter Board, T2d6SA
17