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What is the value of voltage gain in the simplified CE hybrid model?(a) hfe × RL / hre(b) –hfe × RL / hre(c) hfe × RL / hie(d) –hfe × RL / hieI got this question in semester exam.My question is based upon Simplified CE Hybrid Model topic in portion Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits |
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Answer» CORRECT choice is (d) –HFE × RL / hie Explanation: The voltage GAIN of a common emitter (CE) amplifier can be expressed in terms of hybrid parameters in the simplified CE hybrid MODEL. The voltage gain is equal to -hfe × RL / hie where, RL is load resistance, hie is input resistance and -hfe is the current gain. |
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