ICBO (with emitter open) ICB= collector to base current IO = emitter is openĬommon Base configuration (CB) 4. Current relations in CB configuration 1.Common collector configuration (CC).Ĭommon Base configuration (CB) Rc Re Rc Re IC IC IE IE Vcc Vee Vcc Vee IB IB Common base configuration for NPN transistor Common base configuration for PNP transistor Depending on which terminal is made common.Made one of three terminal common to i/p and o/p.for common-base configuration transistor: Transistor as an amplifier Discussion of an amplification effect Parameters relating to current components Reverse saturation current (ICBO) : It is the reverse sat.IE = IPE + INE (for NPN INE for PNP IPE).Emitter current, Base current, Collector current.Transistor operation (cont.) B IE=IB+IC N N P E C Electrons emitted Electrons collected Emitter current Recombination current Collector current Diffuse through base and out of the base connection.Transistor operation in active region (NPN) B N N P E C v EB junction is forward biased and CB junction is reversed biased. ![]()
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