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1. [Amps] Transformer 50/60hz (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Fri, 23 Apr 2010 20:18:31 +0100; Gentlemen, I would appreciate some advice from the transformer "boffins" out there. I am in process of refurbishing an Alpha 76PA, which came over from the USA. I noted, in a recent posting, a link w; /archives//html/Amps/2010-04/msg00620.html (7,346 bytes)
2. Re: [Amps] Transformer 50/60hz (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 23 Apr 2010 18:13:33 -0400; The transformer will run a little bit warmer so dont push the amp to the last watt. The blower will also turn slower so find a happy balance with your output power and air flow. Dont waste your money; /archives//html/Amps/2010-04/msg00625.html (8,737 bytes)
3. Re: [Amps] Transformer 50/60hz (score: 1): Author: vk3pa@vk3pa.com; Date: Fri, 23 Apr 2010 17:45:17 -0500; Quoting Carl <km1h@jeremy.mv.com>: 60hz t/former has less iron in the core causing saturation . on some of the yaesu t/f for 60hz when run on 50hz they burn out after a couple of years.. its ok to ru; /archives//html/Amps/2010-04/msg00628.html (9,536 bytes)
4. Re: [Amps] Transformer 50/60hz (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Fri, 23 Apr 2010 16:36:49 -0700; Some years ago I built a power supply rated at 2.8 KV 1A. Since I thought I might want to operate it in a 50 Hz. location as well as here in the US, I asked Peter Dahl (who is now an SK) about it whe; /archives//html/Amps/2010-04/msg00629.html (9,866 bytes)
5. [Amps] Transformer 50/60hz (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Sat, 24 Apr 2010 01:24:01 +0100; Thank you Carl K1MH, Vic K2VCO and VK3PA for their response to my question. The transformer fitted to this example of the 76PA is the more efficient option that was on offer at the time of manufactur; /archives//html/Amps/2010-04/msg00630.html (8,487 bytes)
6. Re: [Amps] Transformer 50/60hz (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 23 Apr 2010 20:24:16 -0400; In the USA most commercial ham amps have been shipped to 50Hz countries without a problem, even the SB-220. Some have reduced power caveats and others are built with enough iron to work 50/60 Hz. If; /archives//html/Amps/2010-04/msg00631.html (11,297 bytes)
7. Re: [Amps] Transformer 50/60hz (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 23 Apr 2010 21:11:43 -0400; Id say you are good to go as received John considering that the 76 was shipped worldwide and used in contests and DXpeditions. If you have the Hypersil transformer option even better. The blower runs; /archives//html/Amps/2010-04/msg00632.html (10,061 bytes)
8. Re: [Amps] Transformer 50/60hz (score: 1): Author: Charles Harpole <k4vud@hotmail.com>; Date: Sat, 24 Apr 2010 05:04:45 +0000; You have the Hypersil version that looks like it is coated with some thick black stuff. The models are 76A....2 tube standard xformer. 76PA.... 3 tube, standard xformer. 76PAC,,,, 3 tube, Hypersil xf; /archives//html/Amps/2010-04/msg00634.html (12,328 bytes)
9. Re: [Amps] Transformer 50/60hz (score: 1): Author: Dave White <mausoptik@btinternet.com>; Date: Sat, 24 Apr 2010 11:15:19 +0100; I wouldn't bother. There will be very little difference. If you were to runit on aircraft 400hz then things might be a bit different... Dave G0OIL Gentlemen, I would appreciate some advice from the t; /archives//html/Amps/2010-04/msg00637.html (8,474 bytes)
10. Re: [Amps] Transformer 50/60hz (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sat, 24 Apr 2010 10:24:14 -0400; You hopefully mean 3kw INPUT. No way is it output except for the moment before the tubes vaporize. Carl KM1H You have the Hypersil version that looks like it is coated with some thick black stuff. Th; /archives//html/Amps/2010-04/msg00640.html (12,547 bytes)

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