This triac circuit was found in the October 1987 Radio Electronics magazine. The triac is load-dependent and must be mounted on a heat sink.
This code key uses a PLL and an oscillator that generates two frequencies that must be recognized for...
This circuit was used to regulate the speed of small DC motors of cassette recorders. However, if the...
This circuit turns on the relay 12 seconds after S1 is closed. The time is given by C1. The...