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1. [Amps] Amplifier power supply? (score: 1): Author: <gd0tep@safe-mail.net>; Date: Sat, 14 Jul 2007 10:35:19 -0000; Hi Group, Amplifier power supplies... I have two toroid transformers, both the same spec and rating, I want to double them up, i.e. parallel on the primary, 240v supply, and series the secondary wind; /archives//html/Amps/2007-07/msg00220.html (8,177 bytes)
2. Re: [Amps] Amplifier power supply? (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Sat, 14 Jul 2007 12:20:45 +0100; Hi Andy Can't see why not. Being toroidal transformers, the magnetic fields should be entirely contained within each individual transformer. Also, you'd probably want to space them a little way apart; /archives//html/Amps/2007-07/msg00221.html (8,924 bytes)
3. Re: [Amps] Amplifier power supply? (score: 1): Author: "David Cutter" <d.cutter@ntlworld.com>; Date: Sat, 14 Jul 2007 12:22:29 +0100; Magnetically I would have thought no problem, but you should consider how you are to cool them and insulate them from each other. If you are using just one central screw, you might want to consider t; /archives//html/Amps/2007-07/msg00222.html (9,530 bytes)
4. Re: [Amps] Amplifier power supply? (score: 1): Author: STEVEN & NANCY FRAASCH <sjfraasch@embarqmail.com>; Date: Sat, 14 Jul 2007 07:39:53 -0400 (EDT); No problemm; that is how it is done. The more core, more flux. Your essentially just making a bigger piece of permeable material. I'd individually wrap the cores in Teflon tape (what plumbers use for; /archives//html/Amps/2007-07/msg00223.html (9,613 bytes)
5. Re: [Amps] Amplifier power supply? (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 14 Jul 2007 09:30:43 -0400; While it won't hurt his application, you'd be amazed at the amount of flux leakage from those magical self-shielding donuts. For example a iron T-94-2 mix core has enough flux leakage that the induc; /archives//html/Amps/2007-07/msg00225.html (9,173 bytes)
6. Re: [Amps] Amplifier power supply? (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Sat, 14 Jul 2007 15:37:16 +0100; Hello Tom W8JI That is important for RF applications, but mains application are several orders of magnitude away in permeability, numbers of turns and frequency. OK, enough theory... Having an identi; /archives//html/Amps/2007-07/msg00228.html (10,030 bytes)
7. Re: [Amps] Amplifier power supply? (score: 1): Author: gd0tep@Safe-mail.net; Date: Sat, 14 Jul 2007 16:47:00 +0100; OK Ian (and others)! Thanks for all the info, and tests, very much appreciated. I'll be trying it out for real over the next week or so, so will let you know how i get on. Cheers.. 73 Andy http://gd; /archives//html/Amps/2007-07/msg00229.html (6,320 bytes)

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