NATION
MANUAL 385, PAGE 9
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410700 POWER SUPPLY CIRCUIT CARD
EXTERNAL VOLTAGE
ISSUE 9A
Tl
HE�E
DC-DC
CONVERTER
DC-DC CONVERTER
r ----
-,
SEE NOTE 203
(SECONDARY)
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A
(PRIMARY CIRCUIT)
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-12v
+5V
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t
OSCILLATOR
8!
CONTROL CIRCUIT
AC ·DC CIRCUIT
F
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-
------ -i
+
42v
VOLTAGE REFERENCE AND ERROR AMP.
202 202
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.�54
CAUTION
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sEE NoTE 201
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2 7 K
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VREF.
101. DESIG.
F2
FUSE
1.0 FB
102. BATTERY SYMBOL
VREF
+
16V DC
-16 DC
+9V DC
+5V DC
(FG)
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z.4K
2.4K
!NV
Your
10
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CR2
R46
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lOOK
2.�K
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INFORMATION NOTES
POTENTIAL
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42VOC
301 TERMINALS DESIGNATION ENCLOSED IN PARENTHESIS
ARE NOT MARKED ON THE COMPONENT.
V�-��G�OR�-��E
302. ALL RESISTORS ARE l/4 W,
.±5•.4
AND ALL IN OHMS
15.4 TO 19.5
UNLESS OTHERWISE SPECIFIED.
·J!S,o4
TO ·!9.5
303. ALL CAPACITORS VALUES IN MICRO FARADS UNLESS
82 TO 10.4
OTHERWISE SPECIFIED
4.6 TO 5,4
E STA E
306.
R38
R30
1211(
���K
,
.
,
.
�V IN
R32
lOOK
�
INDICATES.
•
42V
DC GROUND
1'1.
+12V
INDICATES ±12V, AND t5 DC
+,5V
R25
3.3K
R24
IOK
11.1 TO 12
.a
304. TRANSFORMER WINDINGS DC R
51
NC
PULSE WIDTH MODULATOR
�tu
TO IZ.S
INDICATED IN OHMS.
I
R34
-+12V DC
-12V
GROUND
+42
IISV DC
39 TO 45
305
CONNECTORS (PtN NUMBERS)
INDICATES FRAME GROUND
�
AC
103 TO 127
(TOP VIEW)
I
PROTECTIVE
l
-+12V
EQUIPMENT NOTES
KEY
INDICATES FULL WAVE BRIDGE
R33
201. THE PROTECTIVE GROUND IS NOT CONNECTED TO THE PRIMARY
JZOI
(NOT GROUND}
I"OOK
CIRCUIT GROUND. CARE MUST BE EXERCISED TO PREVENT DIRECT
CONNECTION OF THESE GROUNDS UNLESS THE POWER SUPPLY IS
��G::S�N��OAU�ri�O��i�o�;�:::��NE�IL�16EZJSEC�6�Ep����TS
2
3
4
R36
J
TO FAIL.
J202
INDICATES TRANSIENT PROTECTION
lOOK
l
2. THE OSCILLATOR AND CONTROL CI�CUIT CAN BE CHECKED BY APPLYING
,
47Usec.
,
TV
_jJ
AN EXTERNAL +16V
200MA.
SOURCE VOLTAGE TO THE CATHODE
OF CRI9. THE WAVEFORMS SHOWN ARE WITH-+ 16V APPLIED
�
INDICATES FOUR TERMINAL LOW
TO CRI9.
INDUCTANCE CAPACITOR
+I2V
203. THE +5V AND
�12V
REGULATOR CIRCUITS CAN BE CHECKED BY
__rt_
l
APPLYING AN EX9V AN D �16V 200M A SOURCE VOLTAGE
OVERVOLTAGE--... OV
ACROSS
C 7 AND
C8 RESPECTIVELY
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