Audio Synthesis Ep005: LM311 Schmitt trigger oscillator

A Schmitt trigger based on a LM311 voltage comparator gives us an
oscillator with repeatable amplitude and frequency.

TIMELINE

00:00 Intro
00:34 LM311 voltage comparator
01:19 Comparator vs ordinary opamp
02:50 Putting the LM311 in a circuit
04:15 Setting Schmitt trigger voltages
05:39 Setting oscillator frequency
06:31 First test of the oscillator
10:05 Correcting the design
12:23 Revising the build and testing again
13:37 Limitations of the design
13:56 Outro

Schematics and spreadsheets shown in video are all available at https://github.com/kennykb/kevins-cav...


CREDITS

Images:

"Beads 061" Art Explosion, 1999. © 1999 Nova Development Corporation.
Used under explicit grant of license.

"Cain by Henri Vidal, Tuileries Garden, Paris, 1896"
By Alex E. Proimos - https://www.flickr.com/photos/proimos...,
CC BY 2.0, https://commons.wikimedia.org/w/index...

All trade dress visible in screen captures from web sites is the
intellectual property of the respective site owners.


Music:

"Light Sting" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/b...

"Samba Stings" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/b...