Monday, May 25, 2026
Resonant VCF from just 7 basic parts #diysynth #electricalengineering
video upload by Moritz Klein
"Get LABOR: https://www.ericasynths.lv/edu-diy-labor/
This VCF uses fully saturated NPN transistors as makeshift voltage-controlled resistors in a simple RC lowpass setup. Chain two stages, feed the output back into the first stage’s capacitor, and it turns resonant without needing any extra parts. Move the input elsewhere in the circuit and you get a resonant high-pass, too.
BOM:
BC548 x2
33nF film capacitor x2
1M resistor x2
TL072 dual op amp x1"
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MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
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