[sdiy] Vactrol (opt align) VCF rev 2: help needed

[Cornutt, David K]

From: jhaible at debitel.net [mailto:jhaible at debitel.net]
> Good point, Harry, I didn't think about that!
> So mouting LDRs on EL panels may still have some advantage
> over LED/LDR vactrols even today!

Hmm.  To drive an EL panel you'd have to frequency
modulate an AC voltage.  A conventional VCO would actually
work, if (1) its CV input response is fast enough, and
(2) you can figure a way to boost the output to about
150V P-P.