[sdiy] linearizing an exponential CV

Neil Harper metadata at gmx.com
Fri Jan 15 06:46:35 CET 2021



On 1/12/21 5:14 PM, David G Dixon wrote:
> Hi Neil,
>
> What you need is a logarithmic amplifier.
>
> This is exactly what "linearizing" the 2164 VCA achieves.  I suggest that
> you read Mike Irwin's article in EDN about that.

thanks david, i figured that's what the 'top half' of the linearized
2164 VCA is doing. i found that EDN article which is great, it seems
like i should be able to tweak the resistor values to get the output
range that I want. i will try this on the breadboard as well.



--
/// Neil Harper
/// Every Wave is New Until it Breaks




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