Lecture 13: Series resistance, channel

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Presentation transcript:

Lecture 13: Series resistance, channel length and width, and threshold voltage 4.5 Bipolar Junction Transistors -1948 Bell Labs Bardeen and Brattain Ge point-contact transistor -1949 Bell Labs Shockley’s classic paper on junction diode and transistors 1951 Bell Labs the first junction bipolar transistor

2 types : n-p-n or p-n-p

Common-base Current gain Emitter injection efficiency Common-emitter Current gain

4.5.1 Emitter Resistance

4.5.2 Collector Resistance (1) E C (2)

4.5.3 Base Resistance