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Engineering · Electrical Engineering
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(c) A Class C power amplifier shown in Figure-04 has a base bias voltage VsB -5V and Vcc-30V.It is determined that a peak value of 9.8V at 1MHz is required to drive the transistor to its saturation current of 1.8A. Further let the ratio, peak value of the fundamental component to the peak value of the output waveform be approximated by (-0.007282 +4.10c -3.54) x 10-3 where 0c is the conduction angle. +Vcc RFC YBB Vee Figure-Q4 i. Calculate the base voltage required to drive the transistor to saturation. ii. Hence determine the conduction angle. ii. What is the output power at IMHz? iv. Calculate the efficiency. (2Marks) (3Marks) (3Marks) (4Marks)

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