Making a simple synth with a 40106 oscillator circuit

So we build a small dual oscillator synth, with a Transistor LFO!
I also go into excruciating detail on how a breadboard works…
EDIT: It’s been brought to my attention that What I call a “Reducer” is actually called a Regulator.

9V Battery Clip
50k and 1M Linear Potentiometer
IRF 540 MOSFET Transistor
3.5mm Audio Connector
7805 5V Voltage Regulator
0.1 uF and 1.0uF capacitor
40106 Hex Schmitt Trigger
Jumper Wires



A brief history and build of the APC. The infamous Atari Punk Console was originally called “Sound Synthesizer” in a Radio Shack magazine printed in 1980. 25 years later it gets a new name and becomes the beloved Lofi noise synth the glitch folk love! 37 years later and we’re still using it. What an amazing little project!

Components 9V Battery Clip
50k and 100k Linear Potentiometers
1k Resistor
2x 0.1uF and 10uF Capacitor
2x 555 Timer Chips
3.5mm Audio Connector
Jumper Wires

What I based my Schematics on:…

And, as filmguerilla found, Here is the actual Engineer’s mini Notebook from 1984 on archive:…