# chaosz

**chaosz** is the Kulturgüter-Schuppen classic of dBm instruments. It was created in 2010 at the first [Circuit Control Festival Dresden](https://www.circuit-control.de/) in the legendary Ostpol location. CHAOSZ (CHAOtic OSZillator), is a simple astable CMOS oscillator that can be made chaotic by power starving and variable filtering of the power supply. The sound ranges from a boring square wave to stomping locomotives to clucking chickens...

[![ChaosZzigar2.JPG](https://www.kulturgueter-schuppen.de/uploads/images/gallery/2025-03/scaled-1680-/chaoszzigar2.JPG)](https://www.kulturgueter-schuppen.de/uploads/images/gallery/2025-03/chaoszzigar2.JPG)  
[![Chaosz2010_SCH.jpg](https://www.kulturgueter-schuppen.de/uploads/images/gallery/2025-03/scaled-1680-/chaosz2010-sch.jpg)](https://www.kulturgueter-schuppen.de/uploads/images/gallery/2025-03/chaosz2010-sch.jpg)

**chaosz schematics** Version 2011: touch body contacts (BC) and output clipping to preserve the hearing of the remaining ear ;-)

[download chaosz .mp3 example](https://www.kulturgueter-schuppen.de/attachments/8 "chaosz sound")

##### **CHAOSZ FAQ**

**why this exotic CD4085 chip ?** because I got some hundred of them for free. You can use almost any CMOS gate connected as inverter in this circuit

**what's this Bruce Willis "die hard" capacitor ?**  
it creates a "power starving" envelope after switching off chaosz