Calculate Vout/Vin

Thread Starter

Luksch

Joined Apr 18, 2013
5
Hello, can please someone help me with my homework. We should calculate the closed-loop gain. So Vout/Vin. But i dont know really how i calculate Vout and Vin for this circuit. Can somebody expalin me how to calculate them?

Thanks in advance
 

Attachments

WBahn

Joined Mar 31, 2012
29,932
Do you have any information about that current source? If not, just call it Io and proceed. Who knows, it may drop out.

You need to show your best attempt to solve YOUR homework problem. Do the best you can. In particular, there are some voltages and currents that you can pick out pretty easily and some others where you can set up relationships pretty readily. Assume that the transistors are ideal having negligible base current and a Vbe of Vd.
 

WBahn

Joined Mar 31, 2012
29,932
First work with the large signal. You need the DC bias conditions from that to do the small-signal equivalent.
 
Top