[sdiy] opto isolator "Vactrol" tester

[Ben Stuyts]

> On 20 Oct 2025, at 13:06, mark verbos via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> I have had VERY unreliable experience with the Silonex parts. I used NSL-32SR3 which are meant to be the fast ones but I had places where they would take several seconds to decay. Oddly, it made a difference if I had them in an inline resistor verses as one part of a voltage divider

Could the internal power dissipation be a factor in this? (Either in the photoresistor directly, or from the LED?)

Ben