PCB
The PSU plug-in PCB contains 3 diodes. 2 form a biphase rectifer (with the larger capactor for smoothing) for the negative rails. The remaining diode and smaller capacitor are a halfwave circuit for the +20V rail. The -10V rail is simply the -20V rail with a series resistor, there is a zener diode to reglate it in the autodialer 201A itself.
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Uploaded on August 24, 2015
Taken on August 19, 2015
PCB
The PSU plug-in PCB contains 3 diodes. 2 form a biphase rectifer (with the larger capactor for smoothing) for the negative rails. The remaining diode and smaller capacitor are a halfwave circuit for the +20V rail. The -10V rail is simply the -20V rail with a series resistor, there is a zener diode to reglate it in the autodialer 201A itself.
209
views
1
fave
0
comments
Uploaded on August 24, 2015
Taken on August 19, 2015