We found this circuit in the October 1987 Radio Electronics magazine. The triac must be controlled according to the heater. The transformer has a low current, of the order of a few hundred mA.
This transmitter operates in the FM band emitting beeps that can be picked up on a common radio at...
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...
PIC16F19197 Microcontroller Family Combines Battery-Friendly LCD Drive with Core Independent...