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Article #9315Re: Halogen news (Re: Do Halogen lamps need ballasts?)
From: Dan Dunphy
Date: Sat, 05 Jan 1991 00:29
Date: Sat, 05 Jan 1991 00:29
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>/ col:sci.electronics / schuster@cup.portal.com (Michael Alan Schuster) / 4:41 pm Nov 29, 1990 / >>The halogen cycle not only prevents rapid loss of filament >>material, it repairs minor flaws in the filament and prevents >>hot-spots due to these flaws. >> >>Halogen lamps burn out (barring some extensive flaw) only >>when one of the non-tungsten parts fails (the filament supports >>weaken from temperature cycling, the way the filament would >>if it weren't for the halogen cycle). > > >What's the principle behind the "krypton" flashlight bulbs being sold >now, and market as "70% brighter" than the standard type? >---------- I suspect they use a principle similar to halogen. I just tried my first. They are a lot brighter.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!ncar!zaphod.mps.ohio-state.edu!sdd.hp.com!hplabs!hpcc05!col!dunphy From: dunphy@col.hp.com (Dan Dunphy) Newsgroups: sci.electronics Subject: Re: Halogen news (Re: Do Halogen lamps need ballasts?) Message-ID: <16120020@col.hp.com> Date: 5 Jan 91 00:29:43 GMT References: <FISH.90Nov28100429@his.gemed.com> Organization: HP Colorado Springs Division Lines: 16