Common Emitter Amplifier

• Aug 21, 2005

• #1

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mobile-it

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a brief on ac model of common emitter amplifier

Hi,

I need some help in understanding the Common Emitter Small Signal Amplifier.

I like to know more about DC settings and AC behaviour of it.

Can you give me some links to educational information of it?

thanks in advance.

 

• Aug 21, 2005

• #2

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SkyHigh

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common emitter amplifier pspice simulation

You may want to read this book written by

Sedra & Smith - "Microelectronic Circuits 5th Edition",

one of the most popular undergraduate textbooks and highly-recommended for use in many universities. Considered a bible, a classic, a 5-star publication.

If you can't understand this book, I would be very surprised because it is very lucid, informative and self-explanatory.

Try it! You will not be disappointed, at least very unlikely to be disappointed.

 

• Aug 21, 2005

• #3

papyaki

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topic emitter amplifier

Hi,

Some intersting links here :

h**p://www.101science.com/transistor.htm

Replace * by t

 

• Aug 21, 2005

• #4

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yjkwon57

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components of common emmiter amplifier

Hi.

You can understand the DC model of a BJT, for example, Ebers-Moll Model. And, you may attach several parasitic capacitances to the model. Then, if you differentiate the model in the input and output port, you will get the AC model. For example, if you kow Vbe/Ib in the common emitter amplifier, you can get dVbe/dIb, which is the dynamic resistance seen from the input.

 

• Sep 8, 2005

• #5

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common emitter amplifier behaviour

Can someone give me some information about the simulation of the Common emitter Amplifier? (SPICE,...) maybe some applets etc.

AC characteristics would be fine (simulation)

And some presentations about CEA

Thanks in advance.

 

• Sep 8, 2005

• #6

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MRFGUY

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common emitter small signal model

You can use orcad to simulate. Actually it is not really hard to simulate CEM. You can easily see DC bias values and AC analysis. Pick up one Transistor and set up biasing resistors and you can start simulate.

 

• Sep 9, 2005

• #7

leomecma

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common emitter amplifier pspice

Look in THE ART OF ELECTRONICS on chapter 2, in FORUM has the book

leomecma

 

• Sep 10, 2005

• #8

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mobile-it

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common emitter dc model

Can someone explain me this schematic and spice simulation?

http://www.ecircuitcenter.com/Circuits/trce/trce.htm

Thanks in advance!

I am in urgent need for this...

Can someone explain me how to find the DC settings by calculation and visualisation?

thank you very much!

 

• Sep 11, 2005

• #9

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rat_race

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ac analysis of common emitter amplifier

you can find and download the gray & meyers Analog Circuit Design book which has deeply discussed the topic

 

• Sep 12, 2005

• #10

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This website is quite handy for the analysis fo the CE amp.
**broken link removed**
There is also quite a good book think it was already mentioned before but i highly recommend it. Microelectronic circuits by Sedra and Smith. 5th edition.

 

• Sep 13, 2005

• #11

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Horovic Hill

The art of Electronics
Very exellent book check it out

 

• Sep 26, 2005

• #12

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you can use ' microelectronics ' by adel sedra , it helps a lot about most of the elementary electronics basis

hope that would help

 

• Sep 26, 2005

• #13

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mobile-it

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Can anyone help me with the frequency effects on this amplifier?

thanks!

 

• Sep 28, 2005

• #14

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mobile-it:

With regard to the frequency response;

After drawing the small-signal model, using Miller's theorem, you would break C_mu (the base-collector capacitance) into a base-emitter and collector emitter components.

Then the 3dB frequency would be :
w_o=1/(RC)
where R is the source resistance of the input signal, and C is the total collector capacitances:
C= C_pi + C_X

where C_X is the Miller component of C_mu in the collector-emitter, which is given by:
C_X= (1+gm R_L)C_mu
where gm is the transconductance, R_L is the load resistance.

HOpe it helps.

 

• Mar 29, 2007

• #15

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www.ecircuitcenter.com/Circuits/trce/trce.htm
www.electronicstutorials.com

 

• Mar 30, 2007

• #16

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Read Integrated Circuits by Millman and Halkias
The Bible for electronics as far as i am concerned

 

• Mar 31, 2007

• #17

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rabel126

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plz refer to the books microelectronics circuits by sedra simith and electronics devices by floyd
first study floyd then study sedra simth u then will get a good knowledge

 

• Mar 31, 2007

• #18

thisistausif

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you can got every thinhg you want in
The art of Electronics