Why FET is called unipolar ?

Status
Not open for further replies.

MSRA

Full Member level 2
Joined
Nov 18, 2006
Messages
130
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,296
Location
NED Pakistan
Activity points
2,207
Why FET is called UNIPOLAR...?
as i think BJT is called bipolar because of the presence of both holes and electrons..?
 

Re: BI/UNI POLAR

True, BJT is called bipolar because of presence of holes and electrons. In FET we use only electrons or holes, not both... It depends of type of FET. In FET the current is transfered only using holes or electrons. When you apply some voltage on its gate, you will just change the resistance of chanal that has only one type of cariers...
 

Re: BI/UNI POLAR

it is based on the carriers used for carrying current... in bjt it is due to both holes and electrons which is not the case for FET....
 

BI/UNI POLAR

If nmos its electroncs
If pmos its Holes

So Unipolar .. hope it helps
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…