The duty cycle of a pulse waveform represents the percentage of one complete cycle during which the signal remains ON (high). First, calculate the time period from the given frequency. Since the frequency is 20 kHz, the time period is T=1/f=1/20,000=50μs. The pulse width is 15 μs, meaning the signal remains ON for 15 μs during each 50 μs cycle. Therefore, the duty cycle is (15/50)×100=30%. Thus, the waveform has a 30% duty cycle, meaning it is ON for 30% of each cycle and OFF for the remaining 70%.
A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle
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