CMOS VCO Introduction. The circuit presented here is aimed towards simplicity and ease of construction. It can be an addition to a modular system, used in a standalone fashion or as a …

With the 4069 VCO this is really simple and this is partially why i like it as much as i do. Allmost all VCOs can be split up to a few basic building blocks, nameley a CV-summer, a exponential …

2020年12月10日 · VCO's are hard and I'm new at this. I've found the Rene Schmitz 4069 to be a cheap model system. It's a schmitt trigger and inverter, flipping an integrator cap; so we get a …

2021年4月2日 · Hey guys, I've been messing around with the 4069 vco circuit by rene schimdtz and i managed to make it work. I would like to know what you guys think, have build this one …

If you hold the modulation inputs at all times (with voltage follower opamp outputs) you will not have an issue. But if you have a switch going to an input that selects (lets say) a VCO, and …

2021年2月9日 · I made that same module a couple years ago, it was my first VCO too. I ended up putting thermal paste between the flat faces of the exponential converter transistors, and zip …

2018年11月22日 · This 4069 VCO with diode charge is far away from a perfect sawtooth VCO core. I bet if you treat your prototype with a heat gun or put it in an oven for a 40° temperature …

2009年8月29日 · Last night I completed my built of the 4069 vco and the vca-2 by René Schmitz . It was a rewarding experience to play a self-soldered circuit that can put out real melodies …

2019年3月12日 · I've put together Rene Schmitz's 4069 VCO (see https://www.schmitzbits.de/vco4069.html); I've added the "Sawtooth buffering amplifier" …

You've found a project where we take one really cheap microchip, a CD4069 (nice), and stick some parts to it, and get a very useful pitch-tracking voltage controlled oscillator! The version …