After the failure of the 9090/9060, commodore had to redesign a part of the power supply to sell them in Europe. They all failed the same way when powered with 50Hz. When we checked the drive, we had 7.5v instead 5V I don't know how many were affected, the failing one were 2 pre series. It was not officially sold when we received them. When the 9060/9090 came out, we already had our own hard disk solution for 2 years. I don’t remember very well, but a chip in the power supply was working fine at 60Hz And failing at 50 Hz -- Didier -----Message d'origine----- De : email@example.com [mailto:firstname.lastname@example.org] De la part de Gerrit Heitsch Envoyé : samedi 4 février 2012 17:59 À : email@example.com Objet : Re: 110V 60Hz / 220V 50Hz power supply On 02/04/2012 05:38 PM, Rainer Buchty wrote: > On Thu, 2 Feb 2012, Groepaz wrote: > >> nah. the fact that many PSUs actually contain transformators that can >> be used for both 110/220v mains (and thus 50/60hz) simply by rewiring >> should tell you that there is no such problem :) > > That doesn't contradict Gerrit. The point here is that the transformer > was designed to work in both modes, therefore not being designed to just > (or, today, barely...) fulfill its task. You just need to use a 50Hz Transformer and design it so that it will be able to deliver enough power when run at 60Hz. Problem solved. > (But, yes, I'm running quite some 120V/60Hz equipment from 240V/50Hz > mains with a 240V/120V transformer in between, and so far never > experienced any problems.) So do I, but I always keep in the back of my mind that there could be a problem, especially if the transformer in question is loaded close to its specified maximum output. Gerrit Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2012-02-04 20:00:17
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