> I have a vested interest in getting lights to be brighter for less -
> Unfortunately I
> don't have the money to go to HID lights.
>
> So - is this true or is it a crock !!
>
> Basically what Illustro does is this. Using a standard bulb, be it
Tungsten,
> Halogen or Xenon (but not HID), a 24 volt pulse is fed in rather than a
> constant12 volts. By switching from 0 to 24 volts up to 2,500 times a
second
> you get a light that is 2.5 times brighter. For example a 60-watt standard
> Halogen bulb will give out the equivalent light of a 180-watt bulb. And
all
> this for the same amount or amperage!
>
> Page can be found at http://www.DIFFLOCK.com - New Products.htm

Your link just went to some magazine main page, so I didn't see what these
people are claiming.  However, incandescent bulbs are work on the physics of
black body radiation.  The only way to get more light from the same
fillament is to increase its temperature.  Due to material limitations,
normal incandescent bulbs operate at a lower temperature than that which
would be most efficient for producing visible light.  Therefore, for our
purposes, increased temperature means both brighter light and higher
efficiency.  However, it also means reduced fillament life.  After you work
out all the many contributing factors, bulb life is inversely proportional
to something like the 12th (yes, it really is that high) power of the
voltage.

I don't see how anyone can get around this basic physics without modifying
the bulb.  The filament temperature is a function of the power supplied to
it.  You can certainly drive an incandescent bulb with PWM.  At 2.5KHz, the
fillament temperature is not going to significantly change during a cycle,
so it effectively sees the average power delivered to it, and will emit
light based on the resulting temperature.  The usual brightness versus life
tradeoff should still apply.


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