Does anybody know this oscillator circuit..?

[jonny]

It's from http://talkingelectronics.com/projects/OP-AMP/OP-AMP-2.html (scroll down a bit). Anyway I was wondering if this circuit has a name? Or anywhere I can learn how it works? I've been trying to build a triangle wave LFO myself with a 555 which I did okay, until I realized it ticks bad even with  CMOS and everything else I tried. I just breadboarded this and it seems much better, no ticking I think so far.

Thanks to anyone who can help!

[jonfoote]

http://www.falstad.com/circuit/e-triangle.html

[thedefog]

The XR2206 is an awfully fun chip to play with. Outputs Square, Triangle, Sine, and Ramp waveforms with very little parts. 1hz to 2Mhz cycle output. Small Bear sells them. It's worth picking up a few of them. I build the Thomas Henry VCO from one, as well as an LFO out of one and couldn't be happier with them.

[Galego]

The XR2206 is an awfully fun chip to play with. Outputs Square, Triangle, Sine, and Ramp waveforms with very little parts. 1hz to 2Mhz cycle output. Small Bear sells them. It's worth picking up a few of them. I build the Thomas Henry VCO from one, as well as an LFO out of one and couldn't be happier with them.

There's the ICL8038 as well, used in Roger Mayer's Voodoo Vibe.

[JKowalski]

The XR2206 is an awfully fun chip to play with. Outputs Square, Triangle, Sine, and Ramp waveforms with very little parts. 1hz to 2Mhz cycle output. Small Bear sells them. It's worth picking up a few of them. I build the Thomas Henry VCO from one, as well as an LFO out of one and couldn't be happier with them.

There's the ICL8038 as well, used in Roger Mayer's Voodoo Vibe.

Discntinued, can't find them for cheap. XR2206 sells for ~4 bucks. ICL8038's sell for >20 bucks and are hard to find.