Question

12) Which of these is a not drawback
of Zener diode shunt regulator?
​

Answer 1

It has poor efficiency for heavy loads because a considerable amount of power is wasted in zener resistance (R2) and series resistor (RS) in comparison with load power. The DC output voltage slightly changes due to zener resistance. Changes in load current produce changes in zener current

Answer 2

Answer: The drawbacks are explained below:-

Zener Diode:

Explanation:

• A silicon semiconductor device known as a Zener diode is capable of allowing current to flow in either the forward or the reverse direction.
• The diode is made up of a specialized p-n junction that has been highly doped and is designed to conduct electrical current in the opposite direction when a certain threshold voltage is reached.
• The Zener diode is able to cancel out voltage by introducing an even higher voltage in the opposite direction, however, this causes the device to waste electricity.
• A Zener diode has a regulation ratio that is rather low and, in general, it is not as good as the transistor.

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