An intersective method of pulse width modulation ________
A) compares the value of a reference sine wave intersecting the modulating signal to determine the pulse width
B) compares the value of a reference dc voltage intersecting the modulating signal to determine the pulse width
C) compares the value of a pulse waveform intersecting the modulating signal to determine the pulse width
D) compares the value of a sawtooth waveform intersecting the modulating signal to determine the pulse width
D
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