CE amplifier gain question

Thread Starter

ECE101

Joined Nov 25, 2011
29
Hi,

I'm just looking to verify something




From a mathematical point of view:

Gain = -gm*Rc

gm = Ic1/Vt
Rc = 8k

When Vo = +15

AV = -((15/8*10^3)/25*10-3) * 8*10^3
= -600


When Vo = -10

AV = ((10/8*10^3)/25*10-3) * 8*10^3
= 400



Is this correct?


note to mods:

I posted this thread here: http://forum.allaboutcircuits.com/showthread.php?t=63201 however I think it belongs in Homework help.
If you could delete/merge the other one that would be great.
 

Adjuster

Joined Dec 26, 2010
2,148
Note also that Vout swings up and down because Ic varies, not Rc. Correcting for this will lead to a completely different answer to your present one.
 
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