Uranus phaser

[tomg]

On 03-Aug-98, Haible Juergen wrote:
>Hi,

>just a few words about my latest project.
>Six cheap surplus LDR's soldered to 12 pins
>of a 14-pin DIL socket, sensitive side of each
>pointing inwards. A red LED soldered to the
>remaining 2 pins, the LED's wires bent so that
>LED lies horizontally in the "corridor" made
>of the 6 LDR's.
>The spaces between these components are
>filled with heat glue (sp ?), transparent enough
>to distibute a diffused light.
>The whole thing wrapped in black heat shrink tube,
>remaining gaps closed with black paint.
>Very compact hex "Vactrol" device ...

I did the same thing a few years ago, inspired by Craig Anderton's CLM-6000
phaser (a clm-6000 is a LED & LDR in the same package)  and found the 1 led
muilt LDR arrangement ok but the sweep range was very limited, just not enough
light on the LDR. I didn't want to buy CLM's I think they were $3.50 each.
Anyway to make a long story shorter a standard sized LED fits perfectly in a
standard rubber grommet then with a little effort you can cover the assembly
with 1/2" heat shrink. Makes a nice full range CLM sub. The down side is you
have to make 6 the up side is a huge sweep range.

-tg