Electronics - Basic Op-Amp Circuits - Discussion


The control element in a basic shunt voltage regulator is a zener diode.

[A]. True
[B]. False

Answer: Option B


No answer description available for this question.

Shobhit said: (Sep 27, 2012)  
In the basic shunt regulator, the control element is a transistor (Q1) in parallel with the load.

Abhi said: (May 4, 2013)  
Not only transistor, Zener diode can also be used as control element in shunt regulator.

Brajendra Kumar Mishra said: (Nov 3, 2013)  
Correct Option is (A).

Zener diode always be used as a Voltage reference and Regulating device so answer will be (A).

Rathi said: (Nov 5, 2013)  

Of Course Zener diode always be used as a Voltage reference in a basic shunt voltage regulator.

Zener diode used as control element ? Not.

So Answer([B].False) is correct.

Shweta said: (Nov 11, 2013)  
Zener diode's voltage remain same so it is sometime used a voltage regulator and some time a reference. So the statement can't be false totally.

Rajashri said: (Feb 2, 2016)  
In transistor shunt regulator, transistor is a control element.

While in zener shunt regulator, zener is a control element.

Leslie said: (Jun 26, 2016)  
Zener diode is only used as a reference, not a control element. Distinguish the difference.

Siddeshwar said: (Jun 18, 2017)  
In question only mentioned control element.

Zener diode control the voltage.

Sravan said: (Feb 6, 2020)  
In shunt regulator, zener diode act as reference volage source means it is control element only.
So, A is correct answer.

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