Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[RFI\]\s+Filtering\s+220VAC\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[RFI\]\s+Filtering\s+220VAC\s*$/: 9 ]

Total 9 documents matching your query.

1. [RFI] Filtering 220VAC (score: 1): Author: <nlsa@nlsa.com>; Date: Thu, 19 Oct 2023 08:46:49 -0400; Dear friends, When applying a common-mode filter (such as toroids) to a North American 220VAC line, only the two "hot" conductors should be included, correct? Not the neutral. W9IP __________________; /archives//html/RFI/2023-10/msg00009.html (6,286 bytes)
2. Re: [RFI] Filtering 220VAC (score: 1): Author: Ken <kgordon2006@frontier.com>; Date: Thu, 19 Oct 2023 06:46:55 -0700; Well, although I most certainly no expert on this subject, I know that "crap" can be carried on the neutral. Therefore I would certainly filter that too.Toroids are cheap.Ken W7EKBSent via the Samsun; /archives//html/RFI/2023-10/msg00010.html (7,019 bytes)
3. Re: [RFI] Filtering 220VAC (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 19 Oct 2023 11:25:22 -0700; If it is ONLY 240V, load current is on the two "hot" conductors, but noise is often present on the ground, so all three should be wound through the toroid core. Fair-Rite #31 is the weapon of choice; /archives//html/RFI/2023-10/msg00011.html (8,406 bytes)
4. Re: [RFI] Filtering 220VAC (score: 1): Author: David Eckhardt <davearea51a@gmail.com>; Date: Thu, 19 Oct 2023 21:02:05 +0000; And further: No more than 3 or 4 non-overlapping turns through the toroidal core. Dave - WØLEV -- *Dave - WØLEV* _______________________________________________ RFI mailing list RFI@contesting.com ht; /archives//html/RFI/2023-10/msg00012.html (9,361 bytes)
5. Re: [RFI] Filtering 220VAC (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 19 Oct 2023 14:13:06 -0700; Turns should be wound sequentially around the core(s). Photographic examples and other details are on pages 22 and 23 of http://k9yc.com/RFI-Ham.pdf The filter of Fig 30 was added to the ARRL Handboo; /archives//html/RFI/2023-10/msg00013.html (7,810 bytes)
6. Re: [RFI] Filtering 220VAC (score: 1): Author: <nlsa@nlsa.com>; Date: Thu, 19 Oct 2023 18:45:26 -0400; Dear Jim & all, Thanks to everyone for their responses on- and off-net. It has been unanimous that the neutral wire should not be excluded in add-on filters. My question was an product of an RFI prob; /archives//html/RFI/2023-10/msg00014.html (9,032 bytes)
7. Re: [RFI] Filtering 220VAC (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 19 Oct 2023 20:42:45 -0700; It is NOT unanimous. The neutral is NOT run to a 240V outlet, only the two phase (hot) conductors and green. The neutral should be present ONLY at 120V outlets, which MAY be fed between one phase and; /archives//html/RFI/2023-10/msg00015.html (10,785 bytes)
8. Re: [RFI] Filtering 220VAC (score: 1): Author: <nlsa@nlsa.com>; Date: Fri, 20 Oct 2023 04:55:25 -0400; Jim, You're right of course. Thank you for correcting. On page 23 of your tutorial, you write, "Commercial AC power line filters (Fig 29) are generally a waste of money, because they provide only dif; /archives//html/RFI/2023-10/msg00016.html (10,936 bytes)
9. Re: [RFI] Filtering 220VAC (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Fri, 20 Oct 2023 07:23:50 -0400; Hi Jim, You said "The neutral is NOT run to a 240V outlet, only the two phase (hot) conductors and green" and I think there needs to be a little clarification, especially for those that might be deal; /archives//html/RFI/2023-10/msg00017.html (8,837 bytes)

Current List: 1 - 9
Page: [1]