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.
This circuit consists of a Step-Down converter (voltage reducer) that can provide a 5 A output with...
This simple injector provides signals whose harmonics extend into the range of tens of megahertz. The...
This 1971 circuit uses components that are not currently common such as the power transistors and...