Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!olivea!orc!inews!pima!bhoughto
From: bhoughto@pima.intel.com (Blair P. Houghton)
Newsgroups: sci.electronics
Subject: Re: Halogen news (Re: Do Halogen lamps need ballasts?)
Message-ID: <1634@inews.intel.com>
Date: 7 Jan 91 01:07:38 GMT
References: <FISH.90Nov28100429@his.gemed.com> <16120021@col.hp.com>
Sender: news@inews.intel.com
Organization: Intel Corp, Chandler, AZ
Lines: 14

In article <16120021@col.hp.com> dunphy@col.hp.com (Dan Dunphy) writes:
>The decrease in tempeature caused a significant
>tungsten deposit to form on the inside of the quartz envelope.
[...]
>I believe a dimmer defeats the halogen cycle.

I would expect so, as the rate of deposition is proportional
to the fourth power of the temperature; so, where the vaporous
tungsten ends up would be very much affected by the power
dissipation.

				--Blair
				  "This holds true for the
				   deposition of cats, too."