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 complementary-output amplifier can be used to source a good qualuty signal to high impedance...
This circuit compresses the dynamic range (amplitudes) of an audio signal. The circuit is passive and...
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...