This power control from a 1968 Motorola manual shows how to use a contemporary diac as a zero-crossing detector. The SCR is of the type depending on the power of the load.
Found in a Popular Electronics from the 90s, this circuit can be used as an electrifier. T1 can be...
This equalizer was found in the May 1978 issue of Radio Electronics magazine. The component values...
Found in a 90’s Popular Electronics, this circuit uses two CMOS inverters to generate a signal of...