Another Resonant Low-Pass Filter

I built another low pass filter with stronger resonance. This thing is still a bit janky and resonance can get a bit unweildy at times, but I like how wild it can get. I’ll try to build a better one soon.

This circuit is modified to work without a negative power supply rail. I’ve used it with +9V, +12V, and +18V supplies.

My demo:


This design is based on Moritz Klein’s “Fully Resonant LPF” video. I modified the circuit to work with a 9V supply. Although this design has also been tested to work with supplies up to 18V.

 Schematics for the Fully Resonant Low Pass Filter