[sdiy] LTspice - exponential voltage curve

Neil Johnson neil.johnson71 at gmail.com
Mon Oct 28 16:19:40 CET 2013


Use an arbitrary voltage source and set the equation to use "exp()"
with some time-based function.  E.g. "V=exp(time/100)".

Neil

On 25 October 2013 16:52, Justin Owen <juzowen at gmail.com> wrote:
> Hello,
>
> Taking my first few steps with LTspice. I'm simulating a simple Linear to Exponential converter running a VCA. I'm scoping/probing the sine wave output of the VCA.
>
> For the linear current source I could run a scope of the linear CV input as it ramped from 0V to 2.5V and graph that against the VCA output to check it's linearity - now I'd like to have a similar exponential voltage source to graph the VCA output against using the Lin/Exp converter.
>
> How would I do that in LTspice?
>
> Got sort of close with an arbitrary voltage source reading of a linear source.
>
> Thanks!
>
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