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本帖最后由 超級狗 于 2017-6-19 17:44 编辑 : F1 `! ]! [9 ]9 U) t1 ~
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What will happen if I bias the collector and emitter of an NPN Transistor inversely?
# \" x3 R+ s4 Q: E2 UIf you use the transistor in reverse, the emitter becomes the collector and the collector becomes the emitter, and its quite simple to see what happens:
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- As the collector doping is less than the emitter doping, the hole current in the collector (now the emitter) increases, leading to lower beta.
- The voltage withstand capability goes down, as now the BE junction is reverse biased, and the emitter is not constructed for high withstand voltage.
- The effect of the thin basis remains. For that reason, if the forward beta is high, then the reverse beta will also be higher.
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