source-follower has the ability to generate current gain?

Status
Not open for further replies.
Z

zhangsai04

Junior Member level 3
Joined
Mar 30, 2007
Messages
29
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,286
Activity points
1,401
Although the source follwer does not generate voltage gain,it does have the ability to fenerate current gain.Is it right?Why?
Thanks
 

Re: source-follower has the ability to generate current gain

we have voltage gain approximately equal to unity.
and Rinput = high while Rout=comparitively low.

now using ohm's law:-
Iinput=v/Rinput < Ioutput=v/Routput.

so this way we get current amplification.

Hope this helps.
 

    Z

    zhangsai04

    Points: 2
    Helpful Answer Positive Rating
the gain of the source follwer is usually 1.
it is mostly used as buffer, if you want...
 

mircea said:
the gain of the source follwer is usually 1.
it is mostly used as buffer, if you want...
Click to expand...

Oh, I am reading Ken Martin's book,jut feel confused when read this sentense about source follower.Thank you for your attention.

Added after 1 minutes:

sentence!
 

Re: source-follower has the ability to generate current gain

it has a current gain because the input current is very low in source follower but only the input voltage controls the output current....
 

    Z

    zhangsai04

    Points: 2
    Helpful Answer Positive Rating
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…