Jörgen Bergfors LM13600 VCA +/-12V

buildamodular · Joined: Jun 14, 2017 Posts: 5 Location: Finland

Do i need to change any resistor values to make it work correctly with +/-12V? As im assuming it is intended to work with +/-15V.

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vladosh · Posted: Sat Oct 21, 2017 9:58 am Post subject:

it will work fine with 12V too i'm sure ,it's a good vca ,have one of these in my synth Smile

cheers

Brogram · Joined: Nov 18, 2008 Posts: 37 Location: NYC

Is it possible to change this VCA to only run on +12v or +9v?
Or do ya'll know of another VCA design based on the LM13700 which can do so?
Thanks!

mph · Joined: Aug 25, 2007 Posts: 88 Location: France

Hi
a simple way to create a bipolar supply is to use an inverter like the LT1054.
Feed it with +12VDC and you'll get -12VDC from the LT1054.
http://www.ti.com/lit/ds/symlink/lt1054.pdf