On/Off Switch with SCR (CB23945E)

This bistable circuit with SCR for direct current was found in the Radio Electronics magazine of June 1969. The SCR is any type such as TIPC106.

Stereo Indicator (CB23520E)
This circuit was found in a Radio Electronics magazine from August 1963. The transistors are...
Sequential Tone Recognizer LM567 (CB12669E)
In the figure we have a circuit in which the second tone recognizer remains disabled until the...
Adjustable Space Mark Rectangular Converter (CB12172E)
This circuit was found in a 1980 publication. This circuit converts a triangular input signal into...