This circuit is from the time when cars used contact breakers. This 80's version measures the dwell angle of the contact breaker for dwell adjustment using an era integrated circuit, the LM3917.
Among other applications, the 1960 Sylvania transistor manual indicates this timer for chess...
Found in Radio Electronics from the 90s, this circuit produces pulses to test an infrared...
The purpose of this circuit is to detect audio that amplitude modulates an RF carrier. The circuit is...