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Total 11 documents matching your query.

1. [Amps] Filament Transformer (score: 1): Author: "David C. Hallam" <dhallam@rapidsys.com>; Date: Sun, 20 Jun 2004 10:50:55 -0400; I am building a linear using a 4CX1500A that needs about 38 amps at 5 volts for the filament. I have two identical 5V 21A filament transformers. Is there any reason why I can't wire the two in parall; /archives//html/Amps/2004-06/msg00109.html (6,594 bytes)
2. Re: [Amps] Filament Transformer (score: 1): Author: "carl seyersdahl" <carlseye@tampabay.rr.com>; Date: Mon, 21 Jun 2004 07:04:39 -0400; Use them , but make sure they are phased properly or the voltage will be too low.!!! carl / kz5ca -- Original Message -- From: "David C. Hallam" <dhallam@rapidsys.com> To: <amps@contesting.com> Sent:; /archives//html/Amps/2004-06/msg00110.html (7,821 bytes)
3. [Amps] filament transformer (score: 1): Author: John Irwin <crazytvjohn@yahoo.com>; Date: Thu, 7 Jul 2005 17:54:00 -0700 (PDT); hi I have a transformer 10vac at 20 amps. 110vac primary. Does anyone know how to calculate the primary ac line draw. I want to use a variac to put it on the money . Need to get the right auto transf; /archives//html/Amps/2005-07/msg00055.html (6,316 bytes)
4. Re: [Amps] filament transformer (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Fri, 08 Jul 2005 00:12:49 -0500; -- Original Message -- From: "John Irwin" <crazytvjohn@yahoo.com> I assume you mean the current drawn by the primary? If so it is simple ohms law. In a transformer, wattage in equals wattage out plus; /archives//html/Amps/2005-07/msg00058.html (7,825 bytes)
5. Re: [Amps] filament transformer (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Fri, 08 Jul 2005 21:15:53 +0100; The primary current will depend on the secondary current. With no load, the primary will draw very little (just the magnetising current). So unless you state the heater voltage and current, one can n; /archives//html/Amps/2005-07/msg00063.html (8,490 bytes)
6. Re: [Amps] filament transformer (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Fri, 08 Jul 2005 16:20:14 -0500; John, David is right on this and I forgot to mention the variac. One thing though, it seems I remember something about those variacs having a set duty cycle that might be on a tag on them, I cant rem; /archives//html/Amps/2005-07/msg00065.html (10,888 bytes)
7. Re: [Amps] filament transformer (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 09 Jul 2005 05:07:05 +0100; Having thought about this again, there was a serious flaw in my argument. Ignoring losses, the primary current will depend ONLY on the secondary current, NOT the secondry voltage. Hence I was not rig; /archives//html/Amps/2005-07/msg00070.html (10,131 bytes)
8. Re: [Amps] filament transformer (score: 1): Author: "Will Matney" <craxd@engineer.com>; Date: Sat, 09 Jul 2005 00:22:56 -0500; David, That's the reason for me always using the wattage in equals wattage out scenario. The current varies with the load and should have a constant voltage after the sag due to the transformer regul; /archives//html/Amps/2005-07/msg00071.html (12,892 bytes)
9. [Amps] filament transformer (score: 1): Author: Bob Gibson <w5rg@yahoo.com>; Date: Wed, 22 Sep 2010 17:27:12 -0700 (PDT); I'm looking for a filament transformer for a 3cx3000 or 3cx6000..;My YC156 tube went south and I can't see paying $450 for a used tube when I can buy a new tube for just a little more..so if anyone n; /archives//html/Amps/2010-09/msg00268.html (6,398 bytes)
10. [Amps] filament transformer (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Thu, 23 Sep 2010 07:21:05 -0700; I'm looking for a filament transformer for a 3cx3000 or 3cx6000..;My YC156 tube went south and I can't see paying $450 for a used tube when I can buy a new tube for just a little more..so if anyone n; /archives//html/Amps/2010-09/msg00280.html (11,960 bytes)
11. Re: [Amps] filament transformer (score: 1): Author: Ron Youvan <ka4inm@tampabay.rr.com>; Date: Fri, 24 Sep 2010 09:32:30 -0400; Did you take into account the choke's induction at 60 Hz? I think the drop from the same amount of wire not wound into a coil would be interesting. -- Ron KA4INM - I'm proud to be Chuck's pop! ______; /archives//html/Amps/2010-09/msg00305.html (7,574 bytes)

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