Name: Solar Cell - Working and Principle
Uploaded: 2019-07-19
Duration: 6 min 50 s
Description: Have you wondered how a solar cell works? And, how do you think the light coming from the sun generates electricity? Watch this video to find out the answer.

Question

Name the device which is used as voltage regulator. Draw the necessary circuit diagram and explain its working.

Accepted Answer

Zener diode is used as a voltage regulator. It allows current in forward bias and blocks in reverse bias.

Working- The unregulated voltage is connected to zener diode through series resistance such that the zener diode is reversed biased. If input voltage increases, the current through the zener diode and resistance increases. Thus, the voltage drop over resistances increases without the change in voltage drop over zener diode, This is because in the breakdown region, zener voltage remains the same irrespective of the current. Similarly, if input voltage decreases, voltage and current over resistance decreases without change in voltage across in zener diode

Name the device which is used as voltage regulator. Draw the necessary circuit diagram and explain its working.

Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

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