Question

TASK 1

a) You are given a 3-terminal device that looks like a NPN transistor, but with a very high gain (beta). You suspect this is a composite device, that is, it is made up of a few components inside the enclosure. Draw a circuit which you propose might be the inner structure of the device.

b) Consider the same NPN transistor circuit in part a). Suppose the resistor R1 is placed between the collector and the base, rather the between VCC and the base. How would this modification affect the behavior of the circuit?

c) Consider the same NPN transistor circuit in part a) . Explain what happens to the voltage at the collector if each of the component values were increased or decreased.

Answer 1

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