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.
This circuit was found in a 1958’s publication. It uses germanium transistor, availble that time....
This circuit was found in an American documentation from 1969. The circuit memorizes when a...
This is a simple circuit to control a set of lamps from 3 different points. We found it in an old...