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Explain the use Zener diode as a voltage...

Explain the use Zener diode as a voltage regulator.

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The circuit connections are made as shown in the figure. The circuit contains a Zener diode, a unregulated voltage source, a series resistance Rs and a load resistance Re Any increasc/decrease in the input voltage results in increase/decrease of voltage drop across Rg without any change in voltage across the Zener diode. Thus the Zener diode acts as voltage regulator.
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Knowledge Check

  • Zener diode is :

    A
    lightly doped
    B
    heavily doped
    C
    always forward biased
    D
    None of these
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