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 stage for general purpose transistors was taken from an old technical manual. The circuit can...
A circuit in which the light turns on smoothly and goes out quickly, but which can be adjusted more...
The purpose of this circuit is to re-trigger slow scan circuits used in the 1980s on low frequency...