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How do we calculate the value of IC in the simplified CE hybrid model?(a) IC = hre × IB(b) IC = -hre × IB(c) IC = hfe × IB(d) IC = -hfe × IBThis question was posed to me during an internship interview.Enquiry is from Simplified CE Hybrid Model in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

The correct choice is (c) IC = hfe × IB

The best I can explain: The collector current of a common emitter (CE) amplifier can be expressed in terms of hybrid PARAMETERS in the simplified CE hybrid MODEL. It is expressed as the product of hfe × IB. This is the same for APPROXIMATE hybrid models as WELL.



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