Harmonic generator circuit

Published:2012/8/22 20:33:00 Author:Ecco | Keyword: Harmonic generator | From:SeekIC

The harmonics generator composed by the two comparators and a summing amplifier is shown in Fig 11-20. It can use any non- square wave including sine, triangle, sawtooth waveform to get harmonic, and harmonic is widely used in phase-locked loop, waveform generator, electronic musical instruments and other harmonic applications. When the comparator is input a harmonic, it will produce an output pulse, the width is proportional to the sum of input amplitude and reference voltage. Changing the reference voltage can allow the pulse width to change between from 0 to 100 %. The harmonic spectrum changes with pulse width, you can use the duty cycle to determine the offset harmonic.



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