Digital BW, The Print

> From: bruce greene [mailto:bagreene@...]
>
> A Variac is a big light dimmer. A large variable resistor. They come in
> many different sizes depending upon the amount of electricity used.
>
> As more resistance is applied, the voltage to the lamp drops and the
> light output decreases while the color temp also decreases.
>
> By the use of the dimmer, I assume that the Solux halogens are filtered
> in such a way as to produce light (at normal voltage) of above 5000K.

Actually, it's a variable transformer, which has a range that allows for
some step-up, not just dimming. Since the fixtures are Chinese, they are
designed for 125V, and the bulbs were running well below 5000K without the
variac.

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Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...