The BJT transistor in the amplifier circuit shown below has a beta equal to 100 and a base emitter voltage drop of 0.7 V when this junction is forward biased. The resistance RL is 10 kΩ The small signal source provides a sine wave with zero average. a) Find the value of resistance RE to establish a DC emitter current of 0.2 mA. b) Find the value of resistance RC to establish a DC collector voltage of +0.5 V. c) Using the hybrid-π model for this transistor draw the equivalent amplifier circuit under small signal conditions and calculate the voltage gain of this amplifier: Av = vo/vsig
Image text
The BJT transistor in the amplifier circuit shown below has a beta equal to 100 and a base emitter voltage drop of 0.7 V when this junction is forward biased. The resistance RL is 10 kΩ The small signal source provides a sine wave with zero average. a) Find the value of resistance RE to establish a DC emitter current of 0.2 mA. b) Find the value of resistance RC to establish a DC collector voltage of +0.5 V. c) Using the hybrid-π model for this transistor draw the equivalent amplifier circuit under small signal conditions and calculate the voltage gain of this amplifier: Av = vo/vsig
