FET Buffer Calculator

FET Buffer Calculator

N-Channel JFET-buffer

N-channel FET buffer deviation
VDD (V)
Desired VRS (V)
VP or VGS (off) (negative Pinch- off voltage or cut-off voltage) (V)
IDSS (zero gate voltage drain current) (mA)
Results:

IDS (mA)
RS (Ω)
VGS (V) 

Equations:

 IDS = DSS (1-V GS / VP) 2

 RS = VRS / IDS


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