This circuit controls a heating element using a triac. Triac must be fitted with a heat sink. We find it in an American documentation from the 80s.
This circuit is from a Radio Electronics from March 1960. The generator works with a 22.5 V...
This circuit was found in a 1995 documentation and is very simple to assemble, as the components are...
We found this circuit in an old American documentation from the 70s. The Triac can be of any type...