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.
This circuit is powered by the source of the equipment under analyze. We found this configuration in a 1974...
The circuit shown with the LM3914 was found in the March 1992 issue of Radio Electronics magazine. The...
This small transmitter appeared in the March 1989 issue of Radio Electronics magazine. The...