A device whose characteristics are very close to that of an ideal voltage source is a
A device whose characteristics are very close to that of an ideal voltage source is a Correct Answer Zener diode
Explanation:
The device used for the voltage regulator and also gives characteristics that are very close to that of an ideal voltage source is a Zener diode.
It is used to regulate the voltage level. It generates a fixed output voltage that remains constant for any changes in load conditions or input voltage.
Zener diode:
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[ alt="06.11.2018.001..09" src="//storage.googleapis.com/tb-img/production/18/11/06.11.2018.001..09.PNG" style="width: 382px; height: 262px;">
[ alt="06.11.2018.001..10" src="//storage.googleapis.com/tb-img/production/18/11/06.11.2018.001..10.PNG">
- It is a PN junction (silicon PN junction) diode and has a low specified reverse voltage which takes advantage of any reverse voltage applied to it.
- From the I-V characteristics curve above, the voltage across the diode in the breakdown is almost constant.
- In the breakdown region, it is used in voltage regulator applications.
