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 of the 1970s uses Germanium transistors. Changes can be made to use silicon...
This circuit was found in an integrated circuit manual from the 1980s. The circuit can be designed...
Found on a 1965 Radio Electronics, this circuit fires a signal xenon lamp applied to the SCR from...