Designed by Philips in 1968 to control the washer water level this circuit uses components from the era. The circuit actuates the water inlet valve.
This circuit triggers the LED when the monitored battery voltage drops below 9 V for 12 V...
We found this circuit in a Radio Electronics from January 1967. The SCR is already the C106, which...
This power source with silicon diodes at a time when valves were still used was found in Radio...