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From: commgrp@silver.ucs.indiana.edu (BACS Data Communications Group)
Newsgroups: sci.electronics
Subject: Re: Do Halogen lamps need ballasts?
Message-ID: <75525@iuvax.cs.indiana.edu>
Date: 30 Nov 90 22:42:43 GMT
Sender: daemon@iuvax.cs.indiana.edu
Lines: 10

Halogen lamps do not need ballasts, however, large halogen lamps and 
arrays of lamps are sometimes connected in series with low-inductance, 
high-current, air-core "inrush chokes" to protect switch contacts:  
Resistance of metal increases with temperature; there is significant 
difference between tungsten's cold resistance and its resistance at 
halogen-lamp operating temperature.

--

Frank Reid     reid@ucs.indiana.edu


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