This optical coupler for short distances is powered by 12 V which is the voltage of the lamp and the relay. The circuit can also use emitting LEDs and the phototransistor can be of any type.
September 2017 - Mouser Electronics is now offering Microchip MTD6508 engine drivers. These...
This circuit was obtained in a 1999 English magazine. We can easily assemble it with a BD136 or...
A non-sinusoidal 120 V voltage can be obtained with this circuit found in the December 1992 Radio...