A capacitor discharge unit greatly improves reliability ... Now let us look at a very popular circuit of a basic CDU. This schematic diagram is from one of the many available on the internet. As it ...

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 ...