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 low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon...
Using the LM383 this circuit was found in a Popular Electronics from the 90s. The source must be...
This 80's Motorola circuit can generate 100 MHz signals, but they can reach 200 MHz with the...