This circuit uses an optocoupler with a phototriac or optotriac to drive an external triac. The circuit is from a Radio Electronics magazine from December 1989.
If mounted with SMD components, this transmitter will be so small that it can be installed inside a...
This circuit for testing the voltage gain of a transistor was found in the March 1953 issue of...
This circuit is valid for the 240 V network but can be changed for other networks. Potentiometer can be...