Electronics - Field Effect Transistors (FET) - Discussion

Discussion Forum : Field Effect Transistors (FET) - General Questions (Q.No. 10)
10.
What is the input impedance of a common-gate configured JFET?
very low
low
high
very high
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
19 comments Page 2 of 2.

Abhishek said:   10 years ago
Why input impedance is high?

Asha Rani Pattedar said:   1 decade ago
For common source & common drain the input current Ii=0. So input impedance infinite, where as in common gate input current is -Id so input impedance is very low.

Sindhu said:   1 decade ago
Input impedance of FET is always high.

Shivank dixit said:   1 decade ago
How input impedance of common gate FET is low?

Shivani said:   1 decade ago
What high input impedance make difference ?

Aishwarye said:   1 decade ago
Common gate FET always has high input impedance.

Sumit choubey said:   1 decade ago
Common gate FET always has high input impedance.

Siva said:   1 decade ago
Common gate JFET has low input impedance and high output impedance.

Arbind kumar said:   1 decade ago
Answer explanation please.


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