The integrated circuit used in this application is uncommon, but equivalent operational ones can be used. The circuit is from the Signetics integrated circuits manual from 1972.
This circuit was found in the October 1987 Radio Electronics magazine. The triac must be matched to...
Found in a 1980s American documentation, this circuit can use a SCR and a general-purpose transistor....
The circuit shown is from National Semiconductor's Linear Applications Handbook. The LM3900 is a...