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Total 9 documents matching your query.

1. [RFI] Haolgens AND . . . (score: 1): Author: WarrenWolff@aol.com; Date: Sat, 18 Nov 2006 16:15:33 EST; I have posted elsewhere, but this is probably the best place to check this out. I am told that low halogens are BIG generators of noise. Is that really true? On the same note, what about light dimmer; /archives//html/RFI/2006-11/msg00045.html (6,686 bytes)
2. Re: [RFI] Haolgens AND . . . (score: 1): Author: Martin AA6E <aa6e@ewing.homedns.org>; Date: Sat, 18 Nov 2006 22:38:51 -0500; Halogen lights themselves are no problem. But the cheap dimming power supplies are reported to be big trouble. Dimmer switches vary. I have had good luck with modern ones, but older ones can be terri; /archives//html/RFI/2006-11/msg00049.html (7,648 bytes)
3. Re: [RFI] Haolgens AND . . . (score: 1): Author: "Cortland Richmond" <ka5s@earthlink.net>; Date: Sat, 18 Nov 2006 23:11:31 -0500; The problem is not halogen bulbs, but the switching power supplies now used instead of low voltage transformers. Lamp dimmers too are prolific interference sources. As for energy-saving screw-in fluo; /archives//html/RFI/2006-11/msg00050.html (7,575 bytes)
4. Re: [RFI] Haolgens AND . . . (score: 1): Author: <wesattaway@bellsouth.net>; Date: Sun, 19 Nov 2006 8:54:19 -0500; The Lutran dimmers sold at Home Depot claim to have RFI suppression. I have about 50 of them in my house and don't notice any RFI problems. _______________________________________________ RFI mailing; /archives//html/RFI/2006-11/msg00055.html (8,893 bytes)
5. Re: [RFI] Haolgens AND . . . (score: 1): Author: "root [knesbitt]" <knesbitt@nucleus.com>; Date: Sun, 19 Nov 2006 11:58:31 -0700; As someone mentioned previously, the halogen bulbs themselves are not the issue, its the low voltage switching supplies which accompany them. I have tried several different brands in the various ligh; /archives//html/RFI/2006-11/msg00059.html (10,073 bytes)
6. Re: [RFI] Haolgens AND . . . (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sun, 19 Nov 2006 17:12:01 -0500; Same issue here. Despite well-shielded receiving systems and antennas hundreds of feet away from my shack I could not use any of the switching supplies I tried. I went to a conventional transformer.; /archives//html/RFI/2006-11/msg00063.html (8,005 bytes)
7. Re: [RFI] Haolgens AND . . . (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 20 Nov 2006 19:44:57 -0500; I just used an old filament transformer. Thanks to the audio-phools that like tube gear there are pages of filament transformers in Mouser's catalog, and of course there are control transformers of; /archives//html/RFI/2006-11/msg00072.html (8,401 bytes)
8. Re: [RFI] Haolgens AND . . . (score: 1): Author: "Donald Chester" <k4kyv@hotmail.com>; Date: Tue, 21 Nov 2006 20:07:02 +0000; I have experienced the same thing with conventional incandescent pilot lamps. Running them on DC seems to lead to a very short life. Someone once explained the reason, but I forget why. It is some k; /archives//html/RFI/2006-11/msg00076.html (8,656 bytes)
9. Re: [RFI] Haolgens AND . . . (score: 1): Author: "Stu Benner" <w3stu@myactv.net>; Date: Tue, 21 Nov 2006 20:16:23 -0500; The reduction in life of an incandescent lamp when operated on DC versus AC is attributable electromigration, a phenomenon in lamps commonly called "DC notching." With DC applied, the tungsten molecu; /archives//html/RFI/2006-11/msg00078.html (10,139 bytes)

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