A square wave voltage varies between 0 V and 12 V. The positive pulses are 75 μ s wide and there is a 25 μ s gap between them. What is the DC average of the waveform?
A) 3 V
B) 4 V
C) 6 V
D) 9 V

Question

Quizplus · Accepted Answer

The DC average voltage of a waveform is calculated by finding the area under the curve (voltage multiplied by time) and then dividing by the total period. Here, the total period is 75 μs (pulse width) + 25 μs (gap) = 100 μs. The area under the curve is 12 V * 75 μs. So, the DC average = (12 V * 75 μs) / 100 μs = 9 V.

A Square Wave Voltage Varies Between 0 V and 12