1. Square Wave Oscillator Circuit

This circuit's input is not restricted to square waves; a 5 percent duty-factor rectangular wave input, for example, will result in a sawtooth, as opposed to a triangular output. The author gratefully acknowledges Rick Hansen for the design concepts incorporated in this circuit.

I need to convert that signal into a triangle / sawtooth wave of fixed amplitude. A simple RC type circuit is not too suitable because as the frequency goes up or down, the amplitude of the voltage across the capacitor changes proportionally.What circuit will allow me to convert a square wave directly to a triangle wave of fixed amplitude???? Square Wave Electrical Waveforms. Square-wave Waveforms are used extensively in electronic and micro electronic circuits for clock and timing control signals as they are symmetrical waveforms of equal and square duration representing each half of a cycle and nearly all digital logic circuits use square wave waveforms on their input and output.

I'm trying to generate different wave forms in c++. So far I managed the sine, triangle and square wave, but I fail to get an idea how to generate a sawtooth wave.

This is how my sine wave looks like:

And this is the triangle wave:

How can I convert it into a sawtooth wave?

1 Answer

You can't do a sample-by-sample conversion of a sine wave to a sawtooth wave. That's because the sine wave is symmetric in time: if you reverse time, then except for some possible phase shift you get the same wave. For a swatooth wave a time reversal has to be combined with a sign reversal, the only time-reversed version will look qualitatively different.

You need some additional information, like e.g. the slope at the current position. Or you need access to the raw parameter value, in which case the formula would be very easy:

Square Wave Oscillator Circuit

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