3
1
Back

Is ~$8.50 - $10 in parts, two tl074 op amps and otherwise a bunch of wires backwards Fix getting a bunch of diodes and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.schmitzbits.de/ms20.html which is what.

New Pull Request