Common base type of a transister

[saranga]

what happens in the common base type of a transister,if we interchange the input to output and output to input? i suppose that the current gain >1 .so this would use for amplification...

 

[The Electrician]

Using a model for the common base topology: https://en.wikipedia.org/wiki/Common_base

Perform a small signal analysis, but with the collector driven, and calculate how much signal will appear at the emitter.

 

[saranga]

Using a model for the common base topology: https://en.wikipedia.org/wiki/Common_base

Perform a small signal analysis, but with the collector driven, and calculate how much signal will appear at the emitter.

thanks for your guidence!