Kenwood PW-A series User manual

REGULATED DC POWER SUPPLY
PW-A SERIES
SERVICE MANUAL
KENWOOD TMI CORPORATION
© 2002-8 PRINTED IN KOREA
B51-1161-00 (K/K) PDF
FILTER
(B11-0597-23)
FRONT PANEL
(A63-0423-12)
RUBBER FOOT
(J02-0363-04)
KNOB, ENCORDER
(K21-0907-14)
KNOB, BLUE
(K29-7260-02)
KNOB, RED
(K29-7257-02)
KNOB, BLACK
(K29-7258-02)
KNOB, WHITE
(K29-7259-02)
KNOB, RED
(K29-7257-02)
SHORTING BAR
(E29-0506-04)
COVER, TOP
(F07-1538-03)
REAR PANEL
(A83-0231-03)
It changes by model.

PW-A
2
The following instructions are for use by qualified personnel only. To avoid electric shock,
do not perform any servicing other than contained in the operating instructions unless you
are qualified to do so.
WARNING
CONTENTS
SPECIFICATIONS ......................................................................................................... 3
CIRCUIT DESCRIPTION ..............................................................................................15
BLOCK DIAGRAM ........................................................................................................20
ADJUSTMENT ............................................................................................................. 28
PRINTED CIRCUIT BOARD TABLE.............................................................................34
PARTS LIST (UNIT)..................................................................................................... 35
PARTS LIST (ELECTRICAL) ....................................................................................... 38
SCHEMATIC DIAGRAM .............................................................................................. 57
P.C. BOARD ................................................................................................................ 72

PW-A
3
SPECIFICATIONS
Specifications of PW18-1.8AQ
IT EM S A Channel B Ch annel C Channel D Channel
0 t o V 0 t o 1818 V 0 to +8 V 0 t o 6 V
10 mV 1 mV
±( 0. 5% SET +2 0 mV ) ±( 0. 5% SET +5 mV )
At 23 ±5 af ter 30 m inute aging
0 t o +1 .8 A 0 t o 1.8 A 0 to +2 A 0 t o 1 A
1 mA
±( 1% SET +5 mA )
At 23 ±5af ter 30 m inute aging
1 mV
( For ±10% v ariat ion of s our c e voltage)
2 mV
(
(
For 0 to 100% variation )
0.5 mV
Measured in the RMS method using 5 Hz to 1 MHz signals .
Transient response 50
µs
( typ. )
Temperature coefficient 60
ppm/ at rated output voltage )
CC characteristics
2 mA
( For ±10% variation of s ource volta ge)
5 mA
( For 0 to 100% variation )
1.5 mA
Ripp le noise
Measured in the RMS method using 5 Hz to 1 MHz
signals.
Temperature coef ficient
15 0 ppm/ ( at rated output current )
Voltage & current indication
Voltage indic ator 4 digit red LEDs, lowest digit:
10 mV
4 digit red LEDs, lowest digit:
1 mV
±( 0. 5% rdg + 2 0 mV )/ 10 mV ±( 0. 5% rdg + 5 mV )/ 1 mVVoltage indication
accuracy
accuracy
& resolution At 23 ±5 af ter 30 minute aging
Current indicator 4 digit red LEDs, lowest digit: 1 mA
±( 1% rdg + 5 mA )/ 1 mA
Current indication
& resolution At 23 ±5 af ter 30 m inute aging
Voltage & current
indication
range 2.5% FS to +102.5% FS /0% FS to +102.5% FS
Common Common
+-
-
-
-
-
ı
ı
ı
ı
ı
ı
-
-
-
-
-
-
Output voltage
Output current
Voltage setting resolution
Current setting resolution
Current setting accuracy
Voltage setting accuracy
CV characteristics
Ripple noise
Input variation
Input variation
Load variation
Load variation

PW-A
4
SPECIFICATIONS
ITEMS A Channel Channe Channel
Output voltage 0 to +1 8 V 0 to 18 V 0 to +6 V
10 m V 1 mV
±( 0. 5% SET +2 0 m V ) ±( 0. 5% SET +5
mV )
At 23 ±5 af ter 30 minute aging
Output current 0 to +1.3 A 0 to 1.3 A 0 t o +5 A
1 mA
±( 1% SET +5 mA )
At 23 ±5af ter 30 minute a ging
CV characteristics
1 mV
( For ±10% v ariation of source voltage)
2 mV
( For 0 to 100% variatio n )
0.5 mVRipple noise
Ripple noise
Measured in the RMS method using 5 Hz to 1 MHz signals .
Transient response 50 µs ( typ. )
Temperature coefficient
Temperature coefficient
60 ppm/ ( at rated output voltage )
CC characteristics
2 mA
( For ±10% v ariation of s ource v oltage)
5 mA
( For 0 to 100% variation )
1.5 m A
Measured in the RMS method using
5 H z t o 1 MHz
sign als.
150 ppm/ ( at rate d output current )
Voltage & current indication
Voltage indicator 4 digit red LEDs , lowest digit: 10 mV 4 digit red LEDs ,
lowest digit: 1 mV
±( 0. 5% rdg + 2 0 mV )/ 10 mV ±(0. 5% rdg + 5
mV)/1 m V
Voltage indication
indication
accuracy
accuracy
& resolution At 23 ±5 af ter 30 minute aging
Current indicator 4 digit red LEDs, low est digit: 1 mA
±( 1% rdg + 5 mA )/ 1 mACurrent
& resolution At 23 ±5 af ter 30
2.5% FS to +102 .5% FS /0% FS to +102 .5%
Common Independent
Approx . 2 00 W , 255 VA
Specifications of PW18-1.3AT(S) ATS is with a remote sensing terminal to C channel
BC
Voltage setting resolution
Current setting resolution
Current setting accuracy
Voltage setting accuracy
Input variation
Input variation
Load variation
Load variation
Voltage & current indication
range
Common
Power consumption
-
-
-
-
ı
ı
ı
ı
ı
ı
-
-
-
-
minute aging
-
-

PW-A
5
SPECIFICATIONS
Specifications of PW18-3AD
0 to +18 V 0 to 18 V
mV
±( 0.5% SET +20 mV )
At 23 ±5af ter 30 minute aging
0 to +3 A 0 to 3 A
1 mA
±( 1% SET + 5 mA )
At 23 ±5 af ter 30 minute aging
1 mV
( For ±10% v ariation of s ource voltage)
2 mV
( For 0 to 100% variatio n )
0.5 m V
Measured in the RMS method using 5 Hz to 1 MH z signals .
50 µs ( typ. )
60 ppm/ (at rated output voltage )
2 mA
( For ±10% v ariation of source voltage)
5 mA
( For 0 to 100% variation )
1.5 mA
Measured in the RMS method using 5 Hz to 1MHz
signals.
ppm/ ( at rated output current )
4 di git r ed LEDs , lowest d igit: 10 mV
±( 0. 5% rdg + 2 0 mV )/ 10 mV
At 23 ±5 after 30 minute aging
4 digit red LEDs, low est di git: 1 mA
±( 1% rdg + 5 m A )/ 1 mA
At 23 ±5 after 30 minute aging
2.5% FS to +102 .5% FS /0% FS to +102 .5%
Appr ox . 215 W , 274 VA
ITEMS ChannelAChannelB
10
Output voltage
Output current
Voltage setting resolution
Current setting resolution
Current setting accuracy
Voltage setting accuracy
CV characteristics
Ripple noise
Input variation
Load variation
Ripple noise
Input variation
Load variation
Transient response
Temperature coefficient
CC characteristics
Temperature coefficient
Voltage & current indication
Voltage indicator
Voltage indication accura cy
& resolution
Current indicator
indication accuracy
Current
& resolution
Voltage & current indicatio
range
Common
Power consumption
ı
ı
ı
ı
ı
ı
-
-
-
-
150
-
-
-
-
-
Common

PW-A
6
SPECIFICATIONS
Specifications of PW36-1.5AD
0 to +36 V 0 to 36 V
mV
±( 0.5% SET +20 mV )
At 23 ±5 af ter 30 minute aging
0 to 0 to 1.5 A
1 mA
±( 1% SET + 5 mA )
At 23 ±5 af ter 30 minute aging
1 mV
( For ±10% v ariation of s ource voltage)
2 mV
( For 0 to 100% variatio n )
0.5 m V
Measured in the RMS method using 5 Hz to 1 MH z signals .
50 µs ( typ. )
60 ppm/ (at rated output voltage )
2 mA
( For ±10% v ariation of source voltage)
5 mA
( For 0 to 100% variation )
1.5 mA
Measured in the RMS method using 5 Hz to 1MHz
signals.
ppm/ ( at rated output current )
4 di git r ed LEDs , lowest d igit: 10 mV
±( 0. 5% rdg + 2 0 mV )/ 10 mV
At 23 ±5 after 30 minute aging
4 digit red LEDs, lowest digit: 1 mA
±( 1% rdg + 5 m A )/ 1 mA
At 23 ±5 after 30 minute aging
2.5% FS to +102 .5% FS /0% FS to +102 .5%
Appr ox . 192 W , 250 VA
ITEMS ChannelAChannelB
10
Output voltage
Output current
Voltage setting resolution
Current setting resolution
Current setting accuracy
Voltage setting accuracy
CV characteristics
Ripple noise
Input variation
Load variation
Ripple noise
Input variation
Load variation
Transient response
Temperature coefficient
CC characteristics
Temperature coefficient
Voltage & current indication
Voltage indicator
Voltage indication accura cy
& resolution
Current indicator
indication accuracy
Current
& resolution
Voltage & current indicatio
range
Common
Power consumption
ı
ı
ı
ı
ı
ı
-
-
-
150
-
-
-
-
-
Common
-
1.5 A
+

PW-A
7
SPECIFICATIONS
Specifications of PW18-3ADP
ITEMS ChannelA ChannelB
Output voltage
Output current
0 to + 18 V 0 to + 18 V
Voltage setting resolution
Current setting resolution
Voltage setting accuracy
Current setting accuracy
10 mV
1mA
±(0.5% SET +20mV)
(1% SET +5mA)
At 23 ±5 after 30 - minute aging
after 30 - minute aging
0 to +3A 0 to +3A
±
At 23 ±5
CV characteristics
1 mV
(Fo r ±10% v a r iat ion of source voltage)
(For 0 to 100% variation)
(For 0 to 100% variation)
2 mV
0.5 mV
Measured in the RMS method using 5 Hz to 1 MHz signals.
Measured in the RMS method using 5 Hz to 1 MHz signals.
T r ansie nt re s p o ns e 50 µs ( typ.)
T em perature coeffic ie nt 60 ppm/ ( at rated output voltage)
( at rated output current)
CC characteristics
2 m A
5 m ALoad variation
Input variation
Load variation
Input variation
1.5 mA
Ripple noise
Ripple noise
Temperature coefficient 150 ppm/
4 - digit red LEDs, lowest digit: 10mV
4 - digit red LEDs, lowest digit: 1mA
±( 0.5% rdg + 20 m V ) /10mV
At 23 ±5 after 30 - minute aging
At 23 ±5 after 30 - minute aging
Current indicator
Voltage indicator
Voltage & current indication
Current indication accuracy &
resolution
Voltage indication accuracy &
resolution
±(1% rdg + 5mA)/ 1mA
Voltage
range
current indication& -2.5% FS to + 102.5% FS/0% FS to + 102.5% FS
Common Common
Power consumption Approx. 215W, 274 VA
(Fo r ±10% va r iat ion of source voltage)
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PW-A
8
SPECIFICATIONS
Speci f i cat i ons of PW 18- 2 ATP
ITEMS
0 to +36 V 0 to +18 V 0 to +8 V
10 m V 1 m V
±±
O u tp ut c u r re nt
±
1 m V
2 mV
0.5 m V
50 µs ( typ. )
2 m A
5 m A
( F o r 0 to 100% va r iat io n )
1.5 m A
Independent
ChannelA ChannelB ChannelC
Output voltage
Voltage setting resolution
Voltage setting accuracy
Current setting resolution
Current setting accuracy
CV characteristics
CC characteristics
T r ansie nt re s p o ns e
T e mperature coef fic ie n t
T e mperature coef fic ie n t
Load variation
Input variation
Load variation
Input variation
Ripple noise
Ripple noise
Current indicator
Voltage indicator
Voltage & current indication
Current indication accuracy &
resolution
Current indication accuracy &
resolution
Voltage
range
current indication&
Common Common
Power consumption Approx. 191W, 242 VA
(0.5% SET +5mV)(0.5% SET +20mV)
At 23 ±5 after 30 - minute aging
At 23 ±5 after 30 - minute aging
1mA
(1% SET +5mA)
0 to +1A 0 to +2A 0 to +2A
(Fo r ±10% va r i ation of source voltage)
(Fo r ±10% variati on of source voltage)
(For 0 to 100% variation)
Measured in the RMS method using 5 Hz to 1 MHz signals.
Measured in the RMS method using 5 Hz to 1 MHz signals.
60 ppm/ ( at rated output voltage)
150 ppm/ ( at rated output current)
4 - digit red LEDs, lowest digit: 1mA
4 - digit red LEDs, lowest digit: 10mV 4 - digit red LEDs,
lowest digit: 1mV
±( 0.5% rdg + 20 mV ) /10mV ±(0.5% rdg + 5 mV )/1mV
At 23 ±5 after 30 - minute aging
At 23 ±5 after 30 - minute aging
±(1% rdg + 5mA)/ 1mA
-2.5% FS to + 102.5% FS/0% FS to + 102.5% FS
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ı

PW-A
9
SPECIFICATIONS
Specifications of PW16-5ADP
0 t o +6 V 0 t o +16V
1 mV 10 mV
±( 0. 5% SET +5 mV ) ±( 0. 5% SET +2 0 m V )
At 23 ±5 after 30 -
30 -
minute a ging
0 t o +3 A 0 t o +5 A
1 mA
±( 1% SET +5 m A )
At 23 ±5 after minute aging
1 m V
( For ±10% v ariation of s ource voltage)
2 m V
( For 0 to 100% v ariation )
0.5 m V
50 µs ( typ. )
60 ppm / ( at rated o utput voltage )
2 mA
( For ±10% v ariation of s ource voltage)
5 m A
( For 0 to 100% variation )
1.5 mA
150 ppm/ (at rate d ou tput current )
±( 0. 5% r dg + 5 m V )/ 1 m V ±( 0. 5% r dg + 2 0 m V )/ 10 mV
±( 1% rdg + 5 m A )/ 1 mA
Ap pr ox . 2 40 W , 300 VA
ITEMS ChannelA ChannelB
Output voltage
Output current
Voltage setting resolution
Current setting resolution
Voltage setting accuracy
Current setting accuracy
CV characteristics
T r ansie nt re s p o ns e
T e m per ature coef fic ie n t
CC characteristics
Load variation
Input variation
Load variation
Input variation
Ripple noise
Ripple noise
Temperature coefficient
Current indicator
Voltage indicator
Voltage & current indication
Current indication accuracy &
resolution
Voltage indication accuracy &
resolution
Voltage
range
current indication&
Common Common
Power consumption
Measured in the RMS method using 5 Hz to 1 MHz signals.
Measured in the RMS method using 5 Hz to 1 MHz signals.
4 - digit red LEDs, lowest digit: 10mV4 - digit red LEDs, lowest digit: 1mV
4 - digit red LEDs, lowest digit: 1mA
At 23 ±5 after 30 - minute aging
At 23 ±5 after 30 - minute aging
-2.5% FS to + 102.5% FS/0% FS to + 102.5% FS
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ı

PW-A
10
SPECIFICATIONS
Specifications of PW8-3ATP
ITEMS A Channel B Channel C Channel
Output voltage 0 to +8 V 0 to +8 V 0 to +18 V
Voltage setting resolution 1 mV 10 mV
±( 0.5% SET +5 mV ) ±(0.5% SET +20
mV )
Voltage setting accuracy
At 23 ±5°C after 30-minute aging
Output current 0 to +3 A 0 to +3 A 0 to +1.5 A
Current setting resolution 1 mA
±( 1% SET +5 mA )Current setting accuracy
At 23 ±5°C after 30-minute aging
CV characteristics
1 mVInput variation
( For ±10% variation of source voltage)
2 mVLoad variation
( For 0 to 100% variation )
0.5 mVRipple noise
Measured in the RMS method using 5 Hz to 1 MHz signals.
Transient response 50 µs ( typ. )
Temperature coefficient 60 ppm/°C (at rated output voltage )
CC characteristics
2 mAInput variation
( For ±10% variation of source voltage)
5 mALoad variation
( For 0 to 100% variation )
1.5 mA
Ripple noise
Measured in the RMS method using 5 Hz t o 1 MH z signals.
Temperature coefficient 150 ppm/°C (at rated output current )
Voltage & current indication
Voltage indicator 4- digit red LEDs, lowest digit: 1 mV 4- digit red LEDs,
lowest digit: 10 mV
±( 0.5% rdg + 5 mV )/ 1 mV ±( 0.5% rdg +20
mV )
/ 10 mV
Voltage indication
accuracy & resolution
At 23 ±5°C after 30-minute aging
Current indicator 4-digit red LEDs, lowest digit: 1 mA
±( 1% rdg + 5 mA )/ 1 mACurrent indication
accuracy & resolution At 23 ±5°C after 30-minute aging
Voltage & current
indication range
-2.5% FS to +102.5% FS /0% FS to +102.5% FS
Common Common Independent
Power consumption Approx. 215 W, 270 VA