This circuit was found in General Electric documentation from 1966. The circuit is suitable for any triac. It can also operate with other mains voltages.
This circuit can be tuned in a 100 kHz band around the frequency of the crystal. The transistor can be...
The figure shows how to obtain a digitally programmed resistance using the 4066. The circuit is...
This audio oscillator has its frequency determined by C1, C2 and the inductor. The inductor can be...