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The coupling device is essential for a differential amplifier with active load.

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The coupling device is essential for a differential amplifier with active load.

(a) True

(b) False

I had been asked this question by my college professor while I was bunking the class.

Asked question is from Differential Amplifier with Active Load topic in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

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The correct choice is (a) True

Best explanation: One of the main functions of the coupling device in a differential amplifier with active load is to block the direct current from passing through to the input of next stage from the output of the first stage. Another function of the coupling device is to transfer the current from the output of first stage to the input of the second stage.

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