Adjustable Shunt Generator Circuit Schematic Diagram

The difference between the following shunt generator and Zener diode is that this circuit can adjust the voltage using potentiometer :

Adjustable shunt regulator circuit schematic

adjustable shunt regulator circuit schematic diagram

Rs can be chosen such as that Rload at maximum current and Rs form a voltage divider giving a voltage level higher than the operating voltage when the maximum load current is known.

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