Explain me what's the early voltage

Status
Not open for further replies.
S

Shans60

Junior Member level 3
Joined
Jun 7, 2007
Messages
26
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,281
Activity points
1,439
Can anyone give me the clear idea of early voltage
 

Re: Early voltage

The Early effect is the variation in the width of the base in a BJT due to a variation in the applied collector voltage.

the variation in the collector current in the active region due to this effect is called as early voltage.......
 

Re: Early voltage

λ=1/Va

Va -> Early voltage, due to Early effect

Id=B/2(Vgs-Vt)²*(1-λVds)
Early voltage effects only on saturation current at MOSFET...
As you know Vds does not effect on Id in saturation, well in real MOSFETs it does, and it is represented with Early effect.
 

Re: Early voltage

Shans60 said:
Can anyone give me the clear idea of early voltage
Click to expand...


Refer Sedra/smith book page no:399(5 th edition ) for early effect..
 

Re: Early voltage

dependence of collector current on the collector emitter voltage.
that is the output resistance is finite.
so when the slope of ic vs vce is extrapolated it cuts at va- the early voltage.
 

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…