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1. [AMPS] Transformer choice (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Mon, 17 May 1999 16:43:16 -0700; I've been reading the traffic here about transformers and power supply types, with the intent of picking a transformer (the *last* big missing piece) for my 2 x 3-500z amplifier project. To remind ev; /archives//html/Amps/1999-05/msg00202.html (7,489 bytes)
2. [Amps] Transformer choice (score: 1): Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>; Date: Mon, 4 Mar 2013 12:28:34 +0100; Hi Guys, I'm looking for some feedback on two transformer offers I have. I'm intending to build a table top amp, so I'm accepting some compromises regarding the transformer. I have made inquiries to; /archives//html/Amps/2013-03/msg00041.html (7,833 bytes)
3. Re: [Amps] Transformer choice (score: 1): Author: "Jim Garland" <4cx250b@miamioh.edu>; Date: Mon, 4 Mar 2013 05:55:20 -0700; Hi Ulf, To me the choice depends on how much you trust Company B. If Company B can be trusted to meet their quoted specifications (2000VA with 2.5% voltage drop at full load), then I'd go with them.; /archives//html/Amps/2013-03/msg00042.html (10,005 bytes)
4. [Amps] Transformer choice (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Mon, 4 Mar 2013 06:37:48 -0800; Hi Guys, I'm looking for some feedback on two transformer offers I have. I'm intending to build a table top amp, so I'm accepting some compromises regarding the transformer. I have made inquiries to; /archives//html/Amps/2013-03/msg00048.html (9,114 bytes)
5. Re: [Amps] Transformer choice (score: 1): Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>; Date: Mon, 4 Mar 2013 19:30:17 +0100; You probably need to add another 10 kilos of iron and thicker copper wire to reach that goal of temp rise, which brings it closer to commercial service and further away from the ham-specs... _______; /archives//html/Amps/2013-03/msg00054.html (7,701 bytes)
6. Re: [Amps] Transformer choice (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 4 Mar 2013 15:57:41 -0500; A 105C rise is not what I consider a good transformer, ask what the magnetizing current is. Carl KM1H Hi Guys, I'm looking for some feedback on two transformer offers I have. I'm intending to build a; /archives//html/Amps/2013-03/msg00056.html (10,185 bytes)
7. Re: [Amps] Transformer choice (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 4 Mar 2013 15:57:47 -0500; I would not consider 11 kg to be close to a 2kVA CCS transformer. The AL-1200/1500/82 Dahl is 15 kg and that is ICAS (2570V/800ma) and a C Core yet it still has to be derated for RTTY, etc. A stock S; /archives//html/Amps/2013-03/msg00057.html (12,295 bytes)
8. Re: [Amps] Transformer choice (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Tue, 5 Mar 2013 05:09:41 +0800; I just order a 2kVA toroid , OD=200mm, H=130mm weight over 20kg, Price=$180 I would not consider 11 kg to be close to a 2kVA CCS transformer. The AL-1200/1500/82 Dahl is 15 kg and that is ICAS (2570V; /archives//html/Amps/2013-03/msg00058.html (12,776 bytes)
9. Re: [Amps] Transformer choice (score: 1): Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>; Date: Mon, 4 Mar 2013 23:13:34 +0100; No one mentioned CCS here, Carl. I was into "ham specs" already from the beginning. This particular project calls for a certain level of mobility. Compromise is fine.. Sent from a wireless device of; /archives//html/Amps/2013-03/msg00060.html (13,734 bytes)
10. Re: [Amps] Transformer choice (score: 1): Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>; Date: Mon, 4 Mar 2013 23:34:53 +0100; I actually think the quote was for class 105, which is 40 ambient+55 rise+10 hot spot. Sent from a wireless device of an unrevealed brand. _______________________________________________ Amps mailing; /archives//html/Amps/2013-03/msg00061.html (10,826 bytes)
11. Re: [Amps] Transformer choice (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 4 Mar 2013 18:55:30 -0500; That then is realistic. Carl KM1H -- Original Message -- From: "Ulf (SM0NOR)" <ulf@sm0nor.com> To: "Carl" <km1h@jeremy.mv.com> Cc: <amps@contesting.com> Sent: Monday, March 04, 2013 5:34 PM Subject:; /archives//html/Amps/2013-03/msg00063.html (11,578 bytes)
12. Re: [Amps] Transformer choice (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 4 Mar 2013 18:55:47 -0500; You sure did mention "continuous" twice and you also asked for feedback. Transformers should always be specified at CCS when ordering as reputable manufacturers do not work with ICAS, IVS, or other h; /archives//html/Amps/2013-03/msg00064.html (14,092 bytes)
13. Re: [Amps] Transformer choice (score: 1): Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>; Date: Tue, 5 Mar 2013 03:18:32 +0100; Point taken... Sent from a wireless device of an unrevealed brand. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a; /archives//html/Amps/2013-03/msg00065.html (15,887 bytes)

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