• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.


Not open for further replies.


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...


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.
Not open for further replies.

Latest threads

EE World Online Articles