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Asked Oct 17, 2019
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Why input impedance of a MOSFET is very high?

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Step 1

In a typical MOAFET, the Gate terminal is seperated from the Source and the Drain terminal by a coating of Silicon Oxide layer below the gate terminal. The oxide layer acts as a dielectric and as a result a capacitor is formed. 

Step 2

Essentially the gate is a metal electrode and it is isolated from...

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