We found this circuit in a Radio Electronics from October 1976. The components are still common, but the circuit applies to older car models with contact breaker ignition.
This protection circuit short-circuits a load when the voltage exceeds a certain value causing the...
This simple FM transmitter powered by batteries or battery was found in a 1997 documentation. It...
Found in old documentation, this circuit makes use of amplifiers of the time, uncommon today. Next...