[sdiy] Vactrols & Photo-Resistors

[harry]

Vactrol is a brand name of a module that has a photoconductive cell
(photo resistor) and a light source, usually an LED or Neon bulb, sometimes
incandescent.  Made by Vactec.

Photo Resistor is generic term for photo conductive cell... made by anyone.

Clairex is a maker of both photoconductive cells and modules.
Hammamatsu also makes these devices.

H^) hary

l'es chupacabra wrote:

> What, if anything, is the difference between a Vactrol and a Photo-Resistor?
>
> Thanks,
>
> John

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