square to triangle waveform

[Dave Butler]

I have a square wave in the frequency range 1 Hz to 25 Hz. What's the best way to convert this to a triangular waveform. I don't need an independent oscillator, I already have the incoming waveform. Thanks!

 

[daddles]

The first thing that comes to my mind is an op amp integrator.

 

[Dave Butler]

Daddles,

Thanks, this seems to be the only thing on offer. It was my first idea, but I wondered if there was something even simpler. Thanks again.

Dave.

 

[alfa88]

I vote for integrator

It doesn't get much simpler.

 

[(*steve*)]

Well, it does (get simpler)...

If the oscillator is an RC oscillator, and if the amplitude of the signal on the capacitor is fairly low (so the voltage across the resistor (and therefore the current through it) stays fairly constant, then the voltage on the capacitor will be approximately a triangular wave.

Note that there's lots of IF's there.