Project XII Modular Part 21: VCA with AR Envelope



Published
In this video I show how I built my latest voltage controlled amplifier (VCA) module that has a dedicated attack & release envelope generator with loop function. The VCA circuit is from a classic transistor design by Moritz Klein https://www.youtube.com/watch?v=yMrCCx6uqcE&t=7s with my small modification to add CV level control. The envelope generator is one I first used in my Project Nine synth but here with the addition of a loop function circuit, also by Moritz Klein https://www.youtube.com/watch?v=L9vTz0vm6pc. Please go and check out the Moritz Klein links as he takes you through the circuit designs step by step. The circuit diagrams and stripboard layouts I used can be found in my dropbox folder https://www.dropbox.com/sh/fx72v4xgjiuekd6/AAA_1oGGSZEub6iuI1MgugBJa?dl=0.


Here is a link for the component tester I show in the video, you may be able to find alternative suppliers and there are several options for the kit. https://www.amazon.co.uk/Mega328-LCR-T4-Transistor-Capacitance-Battery/dp/B0879H1QR9/ref=sr_1_10?dchild=1&keywords=component+tester&qid=1634388048&qsid=257-2452749-3242823&sr=8-10&sres=B07KTRWW4H%2CB088WKJ4DB%2CB078KBD7XJ%2CB08BLDHXYC%2CB07J2Q4VY9%2CB0879H1QR9%2CB07V557KXP%2CB07V688CJP%2CB08XQ9623H%2CB07MY3DXPB%2CB07C5LC486%2CB0842HTN8C%2CB08CXKSXQF%2CB07D59NZGW%2CB07TKXR3YH%2CB07B7PSYM7%2CB07QH3X5B7%2CB085QDY11D%2CB08C9KW4P7%2CB08B3DZVZM&srpt=ELECTRIC_CIRCUIT_TESTING_DEVICE


I have only touched on a very small number of ways you can use this module, I would encourage you to build your own and start exploring what it can do in your modular patches.
Category
Audio
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