Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!att!cbnewsl!cbnewsk!abar From: abar@cbnewsk.att.com (jerome.t.abar..jr) Newsgroups: sci.electronics Subject: Re: Do Halogen lamps need ballasts? Message-ID: <1990Dec1.010752.9285@cbnewsk.att.com> Date: 1 Dec 90 01:07:52 GMT References: <714@skipper.dfrf.nasa.gov> <1147@inews.intel.com> <1990Nov30.174758.979@amd.com> Distribution: usa Organization: AT&T Bell Laboratories Lines: 22 In article <1990Nov30.174758.979@amd.com>, phil@brahms.amd.com (Phil Ngai) writes: > In article <10147@pogo.WV.TEK.COM> bobt@pogo.WV.TEK.COM (Bob Tidrick) writes: > |The bulbs we used where rated > |at about 5000 Hrs. Most of them lasted about 2000. Some lasted as little > |as 500 Hrs. These were bulbs rated at 12 Volts being run at 10V. > > Is there any way you can avoid running them below their rated > voltage? Why are you doing this instead of getting bulbs rated > at less wattage? What do you think the manufacturers could do > about their products being used at a temperature too low for > the full halogen cycle to operate? Would the halogen lamps last longer if you left them on continuously as opposed to turning them on and off, cooling and heating them (a previous poster mentioned crystals growing in cool spots) Thanks. -- ******************************************************************************* ** Tom Abar My Company's Nifty, My Company's Fine, ** ** mvjta@mvgpn.att.com But These Opinions Are Strictly MINE!! ** ******************************************************************************* Brought to you by Super Global Mega Corp .com