Recommended for automotive applications, this circuit was found in an April 1982 Radio Electronics magazine. The transistor supports equivalents. Sensitivity adjustment is made by R1.
We found this circuit in the October 1990 issue of Radio Electronics magazine. The frequency can...
Flybacks transformers are no longer used as displays with kinescopes (CRT) have fallen out of use....
This circuit, with a 12 V input, was found in a Popular Electronics from the 1990s. Information is given...