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 National Semiconductor documentation from the 1990s. It applies to...
This old circuit that makes use of germanium transistors, can be modernized with the use of...
We found this circuit in an American 1980s documentation. Other comparators can be used and the...