Hello to all
I'm studying electronics (1st grade ) and I have one big problem. I cant understand how to make AC analysis of Differential Amplifier or other amp. Can someone refer me to any book

Sorry if my English is bad

 

Microelectronics by Sedra and Smith.

 

Microelectronics by Sedra and Smith.

I'll second that, it's an excellent book. Although if your in 1st grade, you might have some difficulty with the math involved.

 

Another nice book, which is easier to understand, is Electronics Principles by Malvino.

 

I've seen the Electronics Principles by Malvino in the university library but it's in Spanish
Thank you for your help

 

Hello to all
I'm studying electronics (1st grade ) and I have one big problem. I cant understand how to make AC analysis of Differential Amplifier or other amp. Can someone refer me to any book

Sorry if my English is bad

Can you post a schematic of the specific differential amplifer circuit complete with component values if available?

hgmjr

 

Here it is. It says "Make DC and AC analysis at small input signal. Hfe = 200"
http://img46.imageshack.us/f/s8006309.jpg/

 

Im guessing the 1st grade you are speaking of isn't the same 1st grade in America.

I was doing single digit addition in 1st grade. (I think)

Have you had a read through the All About Circuits eBook?

AC:
http://www.allaboutcircuits.com/vol_2/index.html

 

Some of them yes Unfortunately I didn't find what I was looking for.

By 1st grade I mean the first year in the university. Languages are not my strength

 

I ordered Microelectronic Circuit on ebay. Thank again for the help

 

If you choose to deal the OpAmp as ideal, there are two conditions that are always true, and they are sufficient to solve your circuit:
\(
I_+=I_-=0\) and \(
V_-=V+
\)
Use these equations to solve your circuit.
If there is no loop from the output of the OpAmp to its input, you might also need
\(
V_o=A\cdot(V_+-V_-)
\)
where A, the open loop gain of the OpAmp