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Jfet

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gregoost

New Member
In a JFET why does the Vgs vs Id curve change when Vds is changed?? That curve is poltted for constant current region right???in the constant current region Id or Vgs doesn't depend on Vds..then why is above graph changing when Vds is changed???

If anyone knows an explanation pls post it...
thank u...
 

crutschow

Well-Known Member
Most Helpful Member
An ideal device would not change, but a real device has a finite output impedance. This causes a small change in drain current with voltage at a given gate-source voltage.
 
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