This circuit is a continuation of the previous one, serving as a protector against overloads in amplifiers. The circuit was published in an article in the magazine Radio Electronics in January 1985.
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...