This triac circuit was found in the July 1995 Electronics Now magazine. The triac is based on the heating element current and must be equipped with a heat sink.
Found in a 90s Popular Electronics this circuit monitors the modulation of transmitters indicating...
The circuit is from an 80's publication, but the components are current, only special type diodes...
I got this circuit from an English magazine from 1977. It can still be easily assembled, as the...