Bakis,

Pass on to Dieter that the Fender Rhodes and Fender amplifiers use
LDR's for their tremelo, and the LDP's are completely sealed units.
Might they be of some use

Regards,
Kevin

--- In Doepfer_a100@yahoogroups.com , Bakis Sirros
<synth_freak_2000@y...> wrote:

> DIETER SAY:
> "I will rummage for my old documents as I made some
> vactrol designs about 20 years ago (filters, phasers,
> a guitar "vibrato", VCA). One was a triple filter with
> a separate LFO for each filter similar to the A-127
> and was called "grawler" (don't ask why I choose that
> name). Another was a VC phaser similar to A-125 but
> with 10 vactrols instead of the FETs of the A-125. I
> can remember that it was a little bit a problem to
> protect the LDRs (light depending resistors) from
> light not coming from the corresponding LEDs resp.
> bulbs. As far as I know each LED/LDR combination was
> protected by a cap and the cap as well as the pcb area
> below the LED/LDR were painted with black color to
> seal the device against light from outside. But no
> problems that we could no solve. Only a little bit
> labor-intensive.
> Best wishes
> Dieter Doepfer"
>
>
>
>
>
> =====
> synthfreak(parallel worlds)
> athens-greece
> 1 group owner-moderator
>
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