[sdiy] Three Leg Photocell Hunt

[Tony Rolando]

You could build one from two standard photocells, right.

T


Kyle Stephens wrote:
> Ahoy...
>
> I'm looking for a three terminal photocell with potentiometeric response (the exact log/linearity isn't important) - like what's in a three legged Vactrol.
>
> I suppose I could try and pop one of those open to get what I have in mind, but it'd be a waste of a good Vactrol, assuming it's even possible to saw through and chip away all the potting.
>
> A max resistance of ~10M would be grand, as would a turn on time less than ~50ms.
>
> Any leads anywhere? This is the best I got so far, the "MI (TH Series)":
>
> http://www.macron.com.hk/productlist.htm
>
> The exact terminology seems to part of my problem finding one - what to call it, a (dual?) optocell, photocell, photoresistor, optoresistor, CdS cell, "Cadmium sulfide" spelled out in full, etc.?
>
>
> _Kyle
>
>
>       
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