Les Instruments

Circuit Scrapbook

last updated: December 28, 2022

Simple Op Amp Relaxation LFO

About as simple as an LFO gets, all analog, triangle and square out.


LED Driver for Vactrol with OpAmp


This simulation compares two different LED configurations being driven by an op amp. Simulation Simulation

BiPolar +/- 10V to 0-5V


3.3V -> 5V Opamp scaling

Useful for microcontroller projects that only output 3.3v, but maybe we want something like 0-5V or 0-10V for CV.


Simple hard-clipping distortion with op amp

Simulation Simulation v2

Op amp dual Gain stage of white noise generator


Circuit Protection

Great little reddit thread