ABSTRACT
In preceding chapters a.c. supplies have been assumed to be sinusoidal, this being a form of alternating quantity commonly encountered in electrical engineering. However, many supply waveforms are not sinusoidal. For example, sawtooth generators produce ramp waveforms, and rectangular waveforms may be produced by multivibrators. A waveform that is not sinusoidal is called a complex wave. Such a waveform may be shown to be composed of the sum of a series of sinusoidal waves having various interrelated periodic times.
