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in Semiconductor Electronics: Materials, Devices and Simple Circuits by (26.1k points)
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The symbol of a n-p-n transistor is shown in figure.

1. Redraw the symbol and mark emitter, collector and base of the transistor.

2. Arrange the doping concentration and width of emitter, collector and base regions in ascending order.

3. What happens when both the emitter and the collector of a transistor are forward biased?

1 Answer

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2. Doping concentration of base < doping concentration of collector < doping concentration of emitter. Width of base < Width of emitter < Width of collector.

3. The transistor will work as two p-n junctions with common base terminals.

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