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Total 14 documents matching your query.

1. [Amps] Fil transformer (score: 1): Author: "r2robby" <robby@route2.pe.ca>; Date: Mon, 29 Oct 2007 10:51:30 -0300; Someone was looking for a 5V transformer? Can't find the message. -Robby VY2SS _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailma; /archives//html/Amps/2007-10/msg00256.html (6,243 bytes)
2. Re: [Amps] Fil transformer (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Mon, 29 Oct 2007 10:25:42 -0400; Im looking for 10V @ 20A Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-10/msg00257.html (6,970 bytes)
3. [Amps] Fil transformer (score: 1): Author: Kelly Taylor <ve4xt@me.com>; Date: Wed, 09 Aug 2017 14:35:03 -0400; Hi all, Seeking a six-volt filament transformer. Must be centre-tapped. To fix the AC hum problem on my Clipperton L. Must be about the size of a Hammond 166j6, about 3 inches wide (to fit without me; /archives//html/Amps/2017-08/msg00001.html (6,333 bytes)
4. Re: [Amps] Fil transformer (score: 1): Author: Kelly Taylor <ve4xt@me.com>; Date: Thu, 10 Aug 2017 11:47:58 -0400; Hi Russ, Thanks. Just to be clear, I do not require a transformer for providing filament power: it's to fix a design flaw in the Clipperton L, which lacks a centre tap for the filament windings and i; /archives//html/Amps/2017-08/msg00002.html (8,545 bytes)
5. Re: [Amps] Fil transformer (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Thu, 10 Aug 2017 12:17:23 -0400; You can do the same thing with a pair of 10 Ohm resistors and create a virtual CT. Carl -- Original Message -- From: "Kelly Taylor" <ve4xt@me.com> To: "Radio WC6W" <wc6w_amps@yahoo.com> Cc: <amps@con; /archives//html/Amps/2017-08/msg00003.html (10,149 bytes)
6. Re: [Amps] Fil transformer (score: 1): Author: MU 4CX250B <4cx250b@miamioh.edu>; Date: Thu, 10 Aug 2017 10:25:45 -0600; Kelly, I'm afraid I don't understand your comment. When I look at the schematic of the Clipperton L, it appears the RF is fed symmetrically to each side of the filaments, through .01 湩 caps. On the; /archives//html/Amps/2017-08/msg00004.html (10,286 bytes)
7. [Amps] Fil transformer (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Thu, 10 Aug 2017 10:01:09 -0700; <Hi Russ, <Thanks. Just to be clear, I do not require a transformer for providing filament power: it's to fix a design flaw in the Clipperton L, which lacks a centre tap for the filament windings and; /archives//html/Amps/2017-08/msg00005.html (9,979 bytes)
8. Re: [Amps] Fil transformer (score: 1): Author: Merv Schweigert via Amps <amps@contesting.com>; Date: Thu, 10 Aug 2017 07:08:54 -1000; How about the old time trick of putting two low value resistors to ground, one from each side of the filament, used to be used for a center tap many times in days of old. Hi Russ, Thanks. Just to be; /archives//html/Amps/2017-08/msg00006.html (9,768 bytes)
9. Re: [Amps] Fil transformer (score: 1): Author: "Gary Schafer" <garyschafer@largeriver.net>; Date: Thu, 10 Aug 2017 13:13:09 -0500; Jim, With a filament winding the resistance difference from side to side is hard to see. But the true center tap does not have equal resistance on each side of center. The voltage is determined by th; /archives//html/Amps/2017-08/msg00007.html (12,311 bytes)
10. [Amps] Fil transformer (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Thu, 10 Aug 2017 22:01:31 -0700; <How about the old time trick of putting two low value resistors to <ground, one from each side of the <filament, used to be used for a center tap many times in days of old. triode amp, in order to m; /archives//html/Amps/2017-08/msg00008.html (8,353 bytes)
11. Re: [Amps] Fil transformer (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Fri, 11 Aug 2017 06:14:59 +0000; I once used another but much smaller center-tapped filament transformer with its secondary in parallel with the much larger one. Primary was not used. This provided a low resistive path for the catho; /archives//html/Amps/2017-08/msg00009.html (9,723 bytes)
12. Re: [Amps] Fil transformer (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 11 Aug 2017 19:58:58 -0400; <How about the old time trick of putting two low value resistors to <ground, one from each side of the <filament, used to be used for a center tap many times in days of old. gg triode amp, in order t; /archives//html/Amps/2017-08/msg00012.html (11,842 bytes)
13. Re: [Amps] Fil transformer (score: 1): Author: Geert Jan de Groot <pe1hzg@xs4all.nl>; Date: Sun, 13 Aug 2017 14:19:06 +0200; I'm not sure if any kind of AC transformer is of any help? The way I have seen this done is that there is an RF choke between the AC transformer and the filament on both filement wires. This de-coup; /archives//html/Amps/2017-08/msg00016.html (8,565 bytes)
14. [Amps] Fil transformer (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sun, 13 Aug 2017 09:51:35 -0700; ** What does 1956 have to do do with anything? The 2 resistors in series between the filament and the mid point becomes a virtual CT. I mentioned this yesterday. fil winding... to chassis. That puts; /archives//html/Amps/2017-08/msg00017.html (9,240 bytes)

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