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| Q. |
Which of the following is used for regulated electric supply? |
| A. | Zener diode |
| B. | Junction diode |
| C. | Gun diode |
| D. | Tunnel diode |
| Answer» A. Zener diode | |
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Explanation: The Zener diode is like a generalpurpose signal diode. When based in the forward direction it behaves just like a normal signal diode, but when a reverse voltage is applied to it, the voltage remains constant for a wide range of currents and hence widely used for regulatedelectric supply. The device was named after Clarence Zener, who discovered this electrical property. Many diodes described as "Zener" diodes rely instead on avalanche breakdown as the mechanism. |
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