i. Sketch the small-signal equivalent model for an npn bipolar transistor, [3 marks] April/May 2022 Page 3 of 8 5304ELE:

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I Sketch The Small Signal Equivalent Model For An Npn Bipolar Transistor 3 Marks April May 2022 Page 3 Of 8 5304ele 1 (33.93 KiB) Viewed 25 times

i. Sketch the small-signal equivalent model for an npn bipolar transistor, [3 marks] April/May 2022 Page 3 of 8 5304ELE: Linear Electronics ii. iii. iv. For the npn bipolar transistor, the collector current swings from 2 mA to 5 mA as the base current is changed from 5 HA to 15 HA. Find the current gain, B. (4 marks] Explain what the load line is and explain the difference between DC and AC load lines. [4 marks] Use load lines to explain how the negative and positive peaks of Vout are clipped. [4 marks] Explain the difference between the maximum deliverable power' and the supplied dc power. [4 Marks) Fig. QA3 shows one typical collector curve (Vce - Ic) for a BJT. a. Identify three different regions in the curve. [3 Marks) b. Explain which region should be used for amplification. [3 Marks] V. vi Ib = 10A 1mA th Vce 1V 40V