This circuit is from the September 1985 issue of Radio Electronics magazine. The circuit has an LED charge indicator and is based on CMOS logic. The MOSFET must be equipped with a heat sink.
This traditional configuration is from a 1976 publication, showing that nothing has changed since...
This circuit is from a Radio Electronics from February 1971. The SCR is load controlled and the...
This timer triggers high-powered loads powered by the power grid. Times are given by C1 and the...