We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an integrated RCA triac trigger available at the time. The circuit powers 4 incandescent lamps.
This circuit was found in a 1978 English magazine. It is a configuration that aims to select the...
We found this circuit in Radio Electronics magazine from April 1960. It works for both NPN and PNP...
This is a simple circuit to control a set of lamps from 3 different points. We found it in an old...