BJT - ECEN325 Electronics Fall 2011 Bipolar Junction...

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Sam Palermo ECEN325: Electronics Fall 2011 Bipolar Junction Transistor (BJT)
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BJT Circuit Symbols 2 NPN PNP BJTs are 3 terminal devices 2 complementary BJT devices: NPN & PNP
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NPN BJT Device Structure 3 [Sedra/Smith] BJTs consist of 2 back-to-back junctions (diodes) with a shared middle region Doping level varies dramatically with region heavily doped lightly doped very lightly doped
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PNP BJT Device Structure 4 [Sedra/Smith] BJTs consist of 2 back-to-back junctions (diodes)
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BJT - ECEN325 Electronics Fall 2011 Bipolar Junction...

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