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Q&A Re model of transistor is the same in 2 different configuration

I was studying the Re model of a transistor: But the Re model for 2 different configurations (common emitter and common base )turns out to be the same! I don't know why I am really confused.How...

2 answers · posted 2y ago by MissMulan‭ · last activity 2y ago by LvW‭

Question voltage BJT current small-signal

#1: Initial revision by

MissMulan‭ · 2022-05-30T20:44:05Z (almost 2 years ago)

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Re model of transistor is the same in 2 different configuration

I was studying the Re model of a transistor:

![](https://electrical.codidact.com/uploads/D4dtG1oxSCoXYxppTFLSySY9)

But the Re model for 2 different configurations (common emitter and common base )turns out to be the same!

I don't know why I am really confused.How is this possible?

voltage BJT current small-signal

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