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Total 4 documents matching your query.

1. Re: [RFI] Sylvaniai LED bulb interference 20 meters too (score: 1): Author: "Cortland Richmond" <ka5s@earthlink.net>; Date: Sun, 9 Jan 2011 23:01:15 -0500; I put the one I took out of the bedroom in a desktop lamp at the operating position and today noticed an S4 noise level on 20. It is apparently coming in through 12V powering the auto antenna tuners,; /archives//html/RFI/2011-01/msg00086.html (6,851 bytes)
2. Re: [RFI] Sylvaniai LED bulb interference 20 meters too (score: 1): Author: David Robbins <k1ttt@verizon.net>; Date: Mon, 10 Jan 2011 06:33:10 -0600 (CST); I bought 2 LED bulbs at dayton, one had a wide voltage range, like 80-240v, it made all sorts of nasty noise. i am guessing it had a switching regulator in it. the other is a lower power one that has; /archives//html/RFI/2011-01/msg00087.html (7,716 bytes)
3. Re: [RFI] Sylvaniai LED bulb interference 20 meters too (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 11 Jan 2011 14:53:10 -0800; This sounds like common mode on the 12V lead, getting into the system via "pin 1-like" issues in the susceptible equipment. If that's a good guess, I'd put a multi-turn ferrite choke on that power le; /archives//html/RFI/2011-01/msg00095.html (7,627 bytes)
4. Re: [RFI] Sylvaniai LED bulb interference 20 meters too (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 12 Jan 2011 00:53:25 -0800; It certainly could. If there happens to be common mode RF current on that power cable, where does that common mode current go? We would like it to go to the chassis, NOT inside the box, as I describe; /archives//html/RFI/2011-01/msg00105.html (7,840 bytes)

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