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| Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Reducing power of halogen lamps
I have a bedside lamp with a 100W halogen lamp which runs directly off
110V. In the base of the lamp is a small rotary switch about 3/4" in diameter. It has three positions: Full intensity, reduced intensity and off. No other parts are discernible. The question is: How does the lamp achieve the reduction in light intensity (about half)? I actually know the answer because I took the switch apart but when I was looking for it before on Google etc. I could not find it. I am posting here to see how widely this trick is known. Oh, and the lamp is *metal*. Michael Koblic, Campbell River, BC |
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