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.
Found in old American documentation, this circuit demodulates signals from 1 kHz to 10 kHz for...
This simple circuit is a continuity test that, in addition to testing resistors, can also test...
This circuit was obtained from an English magazine from 1985. It consists of a pulser that drives...