Found in documentation from the 1970s, this circuit uses an oscillator and a display to warn of speeding. The circuit applies to cars with contact breaker.
The LM12 is a high-power operational amplifier with 4 A of output capacity. The circuit shown...
This simple circuit that activates a relay was found in Radio Electronics magazine in May 1966. The...
This blocking oscillator that appears elsewhere on this site from other sources, was found in a...