# A current repeater having identical transistor has collector current, IC1 =0.39mA. Find IC2,IC4& IC6

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A current repeater having identical transistor has collector current,  IC1 =0.39mA. Find IC2,IC4&  IC6

(a) 0.39mA, 0.39mA, 0.78mA

(b) 0.78mA, 0.39mA, 0.39mA

(c) 0.39mA, 0.78mA, 0.39mA

(d) None of the mentioned

This question was posed to me during an online interview.

This is a very interesting question from Operational Amplifier Internal Circuit topic in portion Operational Amplifier of Linear Integrated Circuits

## 1 Answer

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Right answer is (d) None of the mentioned

In the realm of explanation: In current repeater, the current IC = IC1 =IC2 =⋯= IC N≅ Iref . Where, N – Number of transistors used in current repeater circuit.

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