Analog Circuits: Waveform Generators

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Analog Circuits: Waveform Generators

Op amps are not limited to use within an analog computer. In fact, they can be effectively used in a wide range of circuits and applications. In these pages, we will see a few of the very many ways op amps can be used to generate various waveforms. Once we have these signals, they in turn can be used for a wide range of purposes, ranging from circuit testing to music synthesis.

A Square Wave Generator: It's easy to drive an op amp's output to either voltage limit. Making it change to the other limit takes a few extra components.
A Triangle Wave Generator: It's also easy to get an exponential charging voltage on a capacitor. Can we somehow make it linear instead?
A Sine Wave Generator: A sine wave is a bit more difficult, since the op amp output cannot be allowed to reach saturation. Then again, maybe it's not really all that hard to do.