This schematic diagram is from one of the many available on the internet. As it turns out, countless versions of this celebrated design are easily obtainable as readymade model railway CDU modules. In ...

Basic circuit diagram of the Hand Crank Generator is shown below. Diode D1 (1N5819/1N4007) is used for input polarity protection. While cranking, about 5 VDC available across the output terminals is ...