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Current gain of a Darlington amplifier
Question

Current gain of a Darlington amplifier

A.

β1+β2

B.

β1*β2

C.

β1-β2

D.

(β1+β2)/(β1)

Correct option is B


he current gain of a Darlington amplifier is the product of the current gains of the two transistors used in the configuration. If the current gains of the two transistors are  β₁ and  β₂, then the total current gain of the Darlington pair is:
Total Current Gain=β1×β2
· A Darlington amplifier consists of two transistors connected in such a way that the emitter of the first transistor is connected to the base of the second transistor.
· The current gain of the first transistor (β₁) multiplies with the current gain of the second transistor (β₂), resulting in a very high overall current gain (β₁ * β₂).
· This configuration is commonly used in applications requiring high current gain, such as in power amplifiers or driver circuits.

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