[sdiy] Fast optical device to replace slow responding LED/LDR combo.. ??

[Jean-Pierre Desrochers]

Yes.. possible solution..

Thanks Mike.

 

De : Mike Bryant <mbryant at futurehorizons.com> 
Envoyé : 18 juin 2024 10:59
À : synth-diy at synth-diy.org; Jean-Pierre Desrochers <jpdesroc at oricom.ca>
Objet : Re: [sdiy] Fast optical device to replace slow responding LED/LDR
combo.. ??

 

You could try something like this

https://uk.rs-online.com/web/p/optocouplers/3525467

 

You'd need to get the LED current in a range where the MOSFETs weren't
saturated, and I've no idea how wide a range that is, but it's
bi-directional so you wouldn't need the diode bridge.

 

  _____  

From: Synth-diy <synth-diy-bounces at synth-diy.org
<mailto:synth-diy-bounces at synth-diy.org> > on behalf of Jean-Pierre
Desrochers via Synth-diy <synth-diy at synth-diy.org
<mailto:synth-diy at synth-diy.org> >
Sent: 18 June 2024 15:19
To: synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
<synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org> >
Subject: [sdiy] Fast optical device to replace slow responding LED/LDR
combo.. ?? 

 

Is there any device that could replace a slow responding LED/LDR combo ?

I was thinking of this LED/photo transistor/bridge replacement..

The only thing to be carefull about would be the diodes voltage drops,

But using very low current that voltage drop could be very low..

Hmmm..

 

 



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