Electronic Devices - FET Devices - Discussion
Discussion Forum : FET Devices - General Questions (Q.No. 4)
4.
What is the range of an FET's input impedance?
10 
to 1 k
to 1 k1 k to 10 k
to 10 k50 k to 100 k
to 100 k1 M to several hundred M
to several hundred MDiscussion:
2 comments Page 1 of 1.
Sriram said:
1 decade ago
Hence input impedance of a JFET is very high resistance in the order of Mega Ohms.
Sriram Purre said:
1 decade ago
Input junction of the FET is(between gate and source terminals) making as reverse bias by applying reverse voltage. We know that in reverse bias PN junction offers high resistance in the order of Mega Ohms. Hence input impedence of a JFET is very high.
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