Sketch the d.c. equivalent circuit of the amplifier, Electrical Engineering

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Question:

Figure shows the basic circuit of the BJT Common Emitter Amplifier.

(a) What is the function of RB, RC, Ci, Co and CE ?

(b) (i) Sketch the d.c. equivalent circuit of the amplifier.

(ii) Determine the d.c value of the collector current IC.

(c) (i) Sketch the small signal equivalent circuit of the amplifier.

(ii) Determine the mid-band gain of the amplifier in dBs.

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