Question

explain zener diodes briefly​

Answer 1

Zener Diodes are used to conduct current to flow in either forward or reverse directions.

Explanation:

A diode is an electronic component which conducts current in one direction. A Zener diode is a silicon semiconductor device. It permits the current to flow in either a forward or reverse direction. This diode consists of a special, heavily doped p-n junction, such as designed to conduct current in the reverse direction when a certain specified voltage is reached.

Zener diodes are mainly used as the voltage references and as a shunt regulators. They are used to regulate the voltage across small circuits. When these are connected in parallel with a variable voltage source so that it is reverse biased, the Zener diode conducts current when the voltage reaches the diode's reverse breakdown voltage.

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Answer 2

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zener diode :- it is a heavily doped PN Junction working in reverse bias. As studied by zener, zener diode is a special purpose diode for Voltage regulation.

• In reverse bias, after a certain voltage (break down voltage) the current suddenly increases in the zener diode remains constant. In this type of property is used to collect voltage regulation.

• A zener diode can be used as a voltage regulator as in the circuit.

• For fluctuating input voltage the zener diods acts as an excellent voltage regulator and provide constant output voltage across the load