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Adjustable Shunt Regulator CIRCUIT (LM308A)

2017-07-07 08:42  
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This article describes the Adjustable Shunt Regulator CIRCUIT (LM308A). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:LM308A.

This shunt regulator acts like a Zener diode, but we can adjust the voltage (via a potentiometer). Here is the schematic diagram of the circuit:

Adjustable shunt regulator circuit schematic

When the maximum load current is known, then we can choose Rs such as that Rload (at max current) and Rs form a voltage divider that gives a voltage level at slightly higher than the operating voltage.

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