Homebrew Vactrols

[Harry Bissell]

Whatever gets the best spectral match... check out the peak for the
Photoconductive
material and then match it.  Green worked best for me...

Roll your own if
1) you can't get commercial...
2) its 4am and you #1
3) you need special like 3 cells instead of two....

H^)

René Schmitz wrote:

> Hi all,
>
> inspired from Grants "Assimilator" filter, and after realizing that I have
> never worked much with LDRs/Vactrols, I have started to experiment with
> LDRs driven from LEDs.
>
> What is the best LED color for driving a CdS LDR? So far I only tried
> orange ones.
> Or to put it the other way, at what wavelenghts has the CdS the highest
> sensitivity?
>
> Are there any good reasons to use an off-the-shelf vactrol instead of a
> roll-your-own?
>
> Bye,
>  René
>
> transconductance | uzs159 at uni-bonn.de
> isfutilepreparet | http://www.uni-bonn.de/~uzs159
> obeassimilated.. | http://members.xoom.com/Rene_Schmitz