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What is the total voltage gain of a high frequency response of differential amplifier if input of first stage is 50V and the output of the second stage is 100V?(a) 20(b) 0.2(c) 2.5(d) 2This question was posed to me in a national level competition.Query is from High Frequency Response of the Differential Amplifiers in division Frequency Response of Electronic Devices & Circuits

Answer»

Right choice is (d) 2

To explain I WOULD say: The total gain of a high frequency response of DIFFERENTIAL amplifier is the ratio of the output of second stage amplifier to the input of first stage amplifier. Where, Voutput = 100V and VINPUT = 50V.

AV = Voutput / Vinput = 100V / 50V = 2.



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