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What is the total voltage gain of the nth stage in an n-stage cascading amplifier?(a) AVK = AIK × RLK × RiK(b) AVK = AIK × RiK / RLK(c) AVK = AIK / RLK × RiK(d) AVK = AIK × RLK / RiKThe question was asked in an online interview.The doubt is from N-Stage Cascading Amplifiers topic in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

Right option is (d) AVK = AIK × RLK / RiK

Best explanation: The gain for any intermediate stage in an n-stage cascading AMPLIFIER can be calculated using AVK = AIK × RLK / RiK. Where, AIK, RLK and RiK is the estimated with respect to the values of the previous STAGES. AIK represents the voltage gain while RLK and RiK REPRESENT the EFFECTIVE LOAD impedance.



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