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How do we compute the voltage gain of a simplified CC amplifier model using hybrid parameters?(a) 1 + hie × Ri(b) 1 – hie × Ri(c) 1 + hie / Ri(d) 1 – hie / RiThis question was posed to me during an interview.My doubt stems from Simplified Calculations for the CC Configuration in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

Right answer is (d) 1 – HIE / Ri

For EXPLANATION I would say: The voltage gain of as implified common collector (CC) amplifier can be EXPRESSED in terms of APPROXIMATE hybrid parameters. The voltage gain is equal to 1 – hie / Riwhere, Riis equal to hie + (1 + HFE) × RL .



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