Could somebody explain the working of common base and common collector transistor configurations?How do the electrons begin flowing in these configurations?

 

How do the electrons begin flowing in these configurations?

They flow due to the applied signal a bias voltages.
Not sure I understand the word "how" in this context (?).

 

They flow due to the applied signal a bias voltages.
Not sure I understand the word "how" in this context (?).

By 'how', i meant how the input voltage forces the electron flow ?Like , in CE configuration,the base input voltage forces a large a no.of electrons from emitter region to flow to p region (base)where some recombine and rest goes to the n region(collector),where the positive voltage attracts them to the collector battery terminal thereby constituting the collector current.How does this work with the CB and CC configurations?

 

By 'how', i meant how the input voltage forces the electron flow

That is a classical way everyone has been taught including myself.
I've been wondering how to implement the latest view of a naturally occurring phenomenon.
I think it may be premature at your stage but browse through this link.
And tell me what you think?

https://forum.allaboutcircuits.com/...nly-if-the-circuit-closed.185460/post-1715479

 

I mean it has to come up sometime guys, for anyone who asks that question but no way am I a teacher and I will now stand down

 

That is a classical way everyone has been taught including myself.
I've been wondering how to implement the latest view of a naturally occurring phenomenon.
I think it may be premature at your stage but browse through this link.
And tell me what you think?

https://forum.allaboutcircuits.com/...nly-if-the-circuit-closed.185460/post-1715479

Confused.

 

Yeah,sorry about that partner, but I must say you did ask the right question. With my current knowledge base I can only explain it two ways but I believe the prerequisite is to explain it three different ways.
Again my apologies.

 

By 'how', i meant how the input voltage forces the electron flow ?Like , in CE configuration,the base input voltage forces a large a no.of electrons from emitter region to flow to p region (base)where some recombine and rest goes to the n region(collector),where the positive voltage attracts them to the collector battery terminal thereby constituting the collector current.How does this work with the CB and CC configurations?

Your wording "the base input voltage forces...." is somewhat misleading and may be one source of misunderstanding.
Instead, it is the voltage Vbe between base and emitter which allows (not "forces") the movement of charged carriers from the emitter through the base region to the collector .
This happens because the DC voltage Vbe works against the diffusion barrier across the pn-junction.
For Vbe=(0.6---0.7)V this barrier nearly disappears and acts no longer as a brake for the electrons.
This is exactly the same effect which can also be observed for each pn-diode.
When you realize how a pn-diode works, it is no problem to understand what a BJT does.
Only very few electrons (a nearly fixed percentage) recombine in this area and form the base current (as an unavoidable side effect).
The majority now is able to cross this very thin region and will be atracted by the collector voltage.

Of course, exactly the same happens in CB and CC configurations. The BJT does not change its working principle.
The only difference is the node where the input signal must be injected (E in the CB configuration) or where the output signal is available (E in CC configuration).

 

What is the purpose of your question? Are you studying solid state physics or electronics? If the latter, the answer will not help you use a transistor in a circuit.

Bob

 

What is the purpose of your question? Are you studying solid state physics or electronics? If the latter, the answer will not help you use a transistor in a circuit.

Bob

Electronics..