HELP....BASICS OF TRANSISTORS(Any help will be appreciated!)

[anuragsm]

I understood the transistor action(emitter-base voltage acts like a gate and allows more electrons to diffuse into the collector region and the voltage applied to collector acts like a suction to [disallowed word] all the electrons) but now when we have different configurations such as "Common" Emitter and "Common" Base,
1) I don't understand what is the difference between the two!!!
2) In both the cases the base-emitter region is forward biased and collector base reion is reverse biased. So what is the difference between the two??
3) How does the common terminal control the current between the other two regions?
4) What do you mean by grounding? Please help me visualize!!!!
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!

[pebe]

Try this link. The site is a mine of information.

http://www.allaboutcircuits.com/

[anuragsm]

naah...didn't help...basically i want to understand what the common terminal does and how it "controls" the current with some sort of example and how each configuration is different....i already have understood how the transistor functions...

[pebe]

You should have read on!

http://www.allaboutcircuits.com/vol_3/index.html

Chapter 4 deals with every confiuration of bipolar transistors - common base, common emitter, common collector and cascode.

What more do you want?