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Analog Electronics - Engineering

Q1:

If a class C power amplifier has an input signal with frequency of 200 kHz and the width of collector current pulses of 0.1 ms, then the duty cycle of the amplifier will be

A 1%

B 2%

C 10%

D 20%

ANS:D - 20%

f=1/0.1*10^-6 = 10^7.
The duty cycle = 200 * 10^3/10^7 * 100 = 200%.