Calculating Resistance in BJT circuits

Thread Starter

eng kryptonite

Joined Jan 25, 2010
17
I have the following circuit attached. Including the problem and solution. for some reason, I either can't plot it in LTSpice correctly to verify the answer, or my answer is incorrect. Would someone help please?
 

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PRS

Joined Aug 24, 2008
989
I have the following circuit attached. Including the problem and solution. for some reason, I either can't plot it in LTSpice correctly to verify the answer, or my answer is incorrect. Would someone help please?
For some reason I can't look at your schematic. Can you use a different file type to post it? Even Paint will create a viewable JPEG file.
 

Jony130

Joined Feb 17, 2009
4,931
Hmm, if I remember well the voltage gain is equal:
Au=gm*Rc1:
105=21.1mS*Rc1--->Rc1=4.97K=5.1K
 
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