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What is the approximate value of the current gain of a simplified CB amplifier configuration?

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What is the approximate value of the current gain of a simplified CB amplifier configuration?

(a) 1

(b) β

(c) ∞

(d) 0

I have been asked this question in my homework.

This intriguing question comes from Simplified Calculations for the CB Configuration in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

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The correct option is (a) 1

To elaborate: The current gain of a simplified CB amplifier configuration is approximately equal to unity (Ai ≈ 1). Ai is approximately equal to β / β + 1. The value of β depends on the value of each individual transistors.

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