Light circuit diagram: 0-300V Variable High Voltage Power Supply

Here is the variable high voltage dc power supply circuit, which we can customize the output voltage from 0 to 311Vdc, and it is protected the current over limit that we define at about 100 mA. The power MOSFET Q1 is controlled the current output, with using the resistor R3 500K adjust the voltage gate pin of Q1. The ZENER diode ZD1-12V is avai

lable prevent over voltage at gate pin of the Q2 if we not has it when high volt the Q2 may be damaged.

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