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.
I found this circuit in a Popular Electronics from 1992. The circuit shows how we can use two...
This circuit is from the 1994 Linear Applications Handbook by National Semiconductor. The circuit can...
We found this shield circuit in a 1991 technical documentation. The phototransistor can be...