| Transistor
Construction |
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| • | Bipolar Junction
Transistor (BJT) |
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| – | 3 layers of doped
semiconductor |
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| – | 2 p-n
junctions |
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| – | Layers are:
Emitter, Base, and Collector |
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| – | Can be NPN or
PNP |
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| – | Emitter and
Collector both P or both N type |
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