The use of a diac improves the performance of the two dimmers in the previous circuits. The circuit is from the same Radio Electronics magazine in an article that teaches how to use triacs.
We found this circuit in a Radio Electronics from October 1976. The components are still common, but...
LEDs with appropriate resistors can be used in place of the lamps in this circuit obtained in a...
Datasheet of We found this circuit in the 1982 SGS Linear Integrated Circuits manual. A | table...