MENU
Question -

For a CE-transistor amplifier, the audio signal voltageacross the collected resistance of 2 kΩ is 2 V. Suppose the current amplificationfactor of the transistor is 100, find the input signal voltage and basecurrent, if the base resistance is 1 kΩ.



Answer -

Collector resistance, RC = 2 kΩ = 2000 Ω

Audio signal voltage across the collector resistance, V =2 V

Current amplification factor of the transistor, β =100

Base resistance, RB = 1kΩ = 1000 Ω

Input signal voltage = Vi

Base current = IB

We have theamplification relation as:

Voltage amplification 

Therefore, the input signal voltage of the amplifier is0.01 V.

Baseresistance is given by the relation:

Therefore, the base current of the amplifier is 10 μA.

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×