Zener Diode Use

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Zener diode primarily used for?

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1. **Zener Diode**: A heavily doped silicon PN junction diode designed to operate specifically in the **reverse breakdown** region.
2. **Characteristic**: In the Zener breakdown region, the voltage across the diode remains almost constant (equal to $V_z$) even for large changes in the reverse current.
3. **Application**: This unique property is utilized for **voltage regulation**. 
4. **Circuit Role**: When placed in parallel with a load, any input voltage fluctuation is 'absorbed' by the Zener's current changes, keeping the load voltage fixed at $V_z$.

Zener Diode Use

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