9V Recorder Switch (CB23652E)

This control circuit was found in a Radio Electronics from May 1965. The circuit switches a recorder from an external command signal.

| Clique na imagem para ampliar |

Battery Low Indicator (CB4796E)
This circuit triggers the LED when the monitored battery voltage drops below 9 V for 12 V...
Capacitive relay (CB23765E)
We found this circuit in a Radio Electronics from January 1967. The SCR is already the C106, which...
Old power supply (CB23622E)
This power source with silicon diodes at a time when valves were still used was found in Radio...