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本帖最后由 超級狗 于 2017-6-19 17:44 编辑
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0 a, X- Y: `! G+ m1 kWhat will happen if I bias the collector and emitter of an NPN Transistor inversely?
& X8 s4 o& G& Y5 J' {8 xIf 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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( X% ]- Z0 U$ @- u) j& |6 E! n- 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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