CMOS related question

Status
Not open for further replies.

sp3

Member level 5
Joined
Jan 1, 2008
Messages
82
Helped
13
Reputation
26
Reaction score
10
Trophy points
1,288
Activity points
1,848
Hi all,

Can anyone of you answer the following question:

In a nmos transistor, how does the current flows from drain to source in saturation region when the channel is pinched off ??

Thanks,
sp3
 

At pinch off, the electric field at the pinch off (depleted) region is very high. this field attracts the current carrying charges flowing at the channel.
 

even though it is said to be pinched off.... there is still a small channel....
 

A.Anand Srinivasan said:
even though it is said to be pinched off.... there is still a small channel....
Click to expand...

at pinch off VGD is 0V but VDS is there which produce a lateral electric field and push the electrons towards drain from source.....hope this will help.
 

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…