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 300 Hz to 3.4 kHz filter was found in the May 1989 Radio Electronics magazine. The circuit...
This circuit was found in an Electronics World magazine from 1990. The circuit can be mounted...
This circuit prevents damage by accidentally reversing the power supply polarity. The circuit is...