GATE EC 2017 Set 2 — Question 14
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Analog Circuits → BJT & MOSFET Amplifiers → Biasing & DC Operating Point
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Question
Consider the circuit shown in the figure. Assume base-to-emitter voltage and common-base current gain () of the transistor is unity.
The value of the collector-to-emitter voltage (in volt) is ________
Correct answer
5.5 to 6.5
Solution
Given that the common-base current gain , the common-emitter current gain . This implies that the base current .
1.Calculate the base voltage ():
Since , the base voltage is determined by the voltage divider formed by the and resistors:2.Calculate the emitter voltage ():
3.Calculate the emitter current ():
4.Calculate the collector current ():
Since , .5.Calculate the collector voltage ():
6.Calculate the collector-to-emitter voltage ():
The value of is .Continue learning with Success Tracker
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