You have the following devices: three 1KOhm resistors, two 9 Volt batteries (act

Question

You have the following devices: three 1KOhm resistors, two 9 Volt batteries (actual voltage = 8.7 Volts), and five identical npn transistors, all with b = 100.

Design a differential amplifier circuit with an emitter follower output.

1)      What is the current in each of the two transistors in the differential circuit?

2)      What is the internal emitter resistance in

3)      What is the small signal common mode gain?

4)       these two transistors?

5)      What is the input resistance at the noninverting input if the inverting input is held at ground?

6)      What is the dc output voltage?

7)      What is the small signal differential gain?

8)      What is the common mode rejection ratio?

9)      What is the current in the emitter follower output transistor?

10)  What is the output resistance?

11)  What is the current drawn from each of the two batteries?

Explanation / Answer

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