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.

Simulation


LED Driver for Vactrol with OpAmp

https://analogoutputblog.wordpress.com/2022/05/04/how-to-vactrol/

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


BiPolar +/- 10V to 0-5V

Simulation


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.

Simulation


Simple hard-clipping distortion with op amp

Simulation Simulation v2


Op amp dual Gain stage of white noise generator

Simulation


Circuit Protection

Great little reddit thread