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 thermometer, which uses common diodes as sensors, was found in a 1975 magazine -...
The time constant of this circuit is 100 x R1 x C1, which leads to the possibility of obtaining times...
This circuit was found in the February 1999 issue of Electronics Now magazine. The circuit...