[sdiy] Photodiode Ladder Filter?

[Romeo Fahl]

Isn't the wiard Boogie basically that, using vactrols for the ladder?

On Sat, Dec 13, 2008 at 5:46 AM, Scott Gravenhorst <music.maker at gte.net> wrote:
> Crazy thought I had, maybe not so crazy?
>
> I was researching IR photodiodes to be used in a non-synth project when I thought - what if photodiodes controlled by LEDs were used to create a diode ladder filter of some kind - is this even possible and/or has it been done?
>
> What I've read about photodiodes is that in photoconductive mode, they are usually reverse biased - would this present a problem in something like a filter?
>
> I'm not a filter giant, certainly not a ladder filter giant, I'm just asking...
>
> -- ScottG
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