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REV.-A
2.3.8
+
12 VDC Supply Circuit
The voltage from the transformer is rectified by 022 or 023, and
+
12V OC is produced. Theory suggests
that load variations can cause large variations in the output voltage. In particular, output voltage may
be quite high under no-load conditions. To prevent this problem, dummy resistors R24 and R25 are
inserted into the circuit.
02
R31
®
2 1/4W F
r - - - - - - - I ; > t - - - - . - - - -......
----J\M,----. +
12VOC
®
28
2200P
023
+
C22
470
+
C23
470
R24
2.2K 112W
R25
2.2K 112W
'----+----4>---IlCI--.....
------4~-..1IJI.JI\,--
__ -
12VOC
R32
2 1/4W
®
GNO
®
Figure 2-22. ± 12 VDC Supply Circuit
2-23
: Fuse resistor
(120V VerI
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