This circuit was obtained from Electronics Now magazine, July 1995. The triac depends on the heating element current, and the sensor will determine the adjustment potentiometer.
Found in a 73 magazine for radio amateurs of the 1980s, this circuit uses a dual-gate MOSFET. This...
This circuit is intended for communications receivers. We can find it in a documentation from the...
This traditional TTL configuration was obtained in a 1977 documentation. The supply must be made...