This is a circuit that allows remote activation of a power supply. The circuit was used with a timer of the time. It appeared in the November 1973 issue of Radio Electronics magazine.
This circuit was found in a 1964 MOSFET applications manual. The circuit uses period general...
This circuit is from a Japanese documentation from 1971, using transistors of the time. The...
This circuit uses Only passive components and have to be plugged to the input of an audio...