lesson 10 2010 common collector & common base amplifiers with activities

Lesson 10 2010 common collector & common base amplifiers with activities

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Unformatted text preview: Common-Collector and Common- Base Amplifiers Common-Collector and Common-Base Amplifiers Objective: after learning this section, you will be able to: Draw a common-collector (CC) amplifier; Derive the ac equivalent of a CC amplifier; Retrieve the input resistance, output resistance, and voltage gain of a CC amplifier; Common-Collector and Common- Base Amplifiers Objective: after learning this section, you will be able to: Draw a common-base (CB) amplifier; Derive the ac equivalent of a CB amplifier; Retrieve the input resistance, output resistance, and voltage gain of a CB amplifier. Common-Collector Amplifier Collector at ac ground Input applied at base Output obtained at emitter (emitter- follower) Coupling capacitors dc equivalent circuit: ~ that of CE amplifier; no R C R2 R1 Rs Vs RL RE VC C AC Equivalent Circuit Rs Vs R1 R2 RL RE AC Equivalent and Model R in : resistance seen by ac source A v : ratio of input voltage over output voltage R out = resistance seen by ac load Ro u t Rs Vs V in R in RL Av .V in Vo u t R2 Rs Vs R1 R in V in Ro u t RL RE Vo u t Av = Vo u t V in Input Resistance Looking in at the Base...
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This note was uploaded on 04/04/2010 for the course BME 302L taught by Professor Maarek during the Spring '08 term at USC.

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Lesson 10 2010 common collector & common base amplifiers with activities

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