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Your always the first one to answer my questions =)
Thanks...
As you can tell I aborted the whole Power resister plan =)
With the feedback you gave me on the subject before. I decided the best and most logical way for what I'm doing is a bulb.
That's correct. It's called the "halogen cycle" and for it to work correctly, the lamp must be operated at normal voltage. I understand that putting them on a dimmer and keeping them operating under-voltage will cause the quartz to blacken prematurely, reducing light output. It isn't so much putting the metal back onto the filament as it is keeping from coating the inside of the envelope.
Of course, that's when you're using them as intended. As for using them far below the glow level, there shouldnt' be any difference. I'd characterize the filament against that of a standard lamp just to see how they compare. Just start with low voltages and measure current each time using a DC supply and then use Ohm's law to calculate the resistance and create a graph for comparison. I can see where using a halogen lamp in place of a standard 150-watt incandescent lamp would have some space-saving advantages. Still, with the smaller envelope, you'll have to watch the heat and mount the thing accordingly.
A 150W halogen will probably give out as much light as a standard 200W incandescent.
Even so, you're ignoreing the fact that the bulb life is ruduces by running it at a lower voltage as the halogen gas can't return the particles to the filiment and they'll just condense on the bulb's surface making it go black and die.
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