Lecture22

Lecture22

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Unformatted text preview: & Banerjee: BJT Structure — PNP Emitter (p+) injects holes into reverse-biased Base-Collector. Emitter (p+) injects holes into reverse-biased Base-Collector. For Collector to… collect all (most) holes we need Base to be quite _____________. Mathematically, Wb ≪ _____. For Collector to… collect all (most) holes we need Base to be quite _____________. Mathematically, Wb ≪ _____. Emitter (p+) injects holes into reverse-biased Base-Collector. Properly biased, with BJT “on” the voltages are: VEB > ____ Properly biased, with BJT “on” the voltages are: VEB > ____ andor Collector to… collect all (most) holes we need Base to be < _____ (same V V > ____). and VCB < _____ (same asasBC BC_> _____). F V CB IIff quite _____________. injected holes are collected: IIEa≈ IC are so, then almost all injected holes are collected: IE ≈ C re so, then almost all Mathematically, Wb ≪ _____. tthe “large” currents here (water passing through hose). he “large” currents here (water passing through hose). Properly biased, with...
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This document was uploaded on 02/18/2014.

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