[sdiy] Vactrol Driving

Ben Bradley ben.pi.bradley at gmail.com
Thu Sep 27 06:00:38 CEST 2018


Yes, it's basically an old-fashioned "signal" LED with probably max
current of 20mA. The LED responds instantly with light vs. current,
but the light-dependent resistor does not, and the charactaristics can
vary a lot from unit to unit.
There's more detail (maybe more than you want) here:
https://en.wikipedia.org/wiki/Resistive_opto-isolator
If you're really cheap, this site shows how to make your own:
http://sound.whsites.net/project145.htm

On Wed, Sep 26, 2018 at 11:21 PM Youssef Menebhi
<youssef.menebhi.79 at gmail.com> wrote:
>
> Hi-
>
> I recently acquired a bag of vactrols, but I do not know much about them.
> Is there an ideal way to drive them or is it more or less the same as
> driving an LED?  Does anyone have any preferred driver circuits that
> they could share?
>
> Thank You,
> Youssef
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