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From: kwang@polyslo.CalPoly.EDU (<The Scarecrow>)
Newsgroups: sci.electronics
Subject: Re: 220V/120V transformers with 60Hz/50Hz converters
Message-ID: <2854907d.5eea@polyslo.CalPoly.EDU>
Date: 11 Jun 91 08:57:33 GMT
References: <1991Jun3.021343.24148@athena.mit.edu> <9258@mcshh.hanse.de> <1991Jun7.022851.84@cmkrnl.uucp>
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In sci.electronics jeh@cmkrnl.uucp writes:
>wrs@mcshh.hanse.de (Wolfgang R. Schulz) writes:
>> caserta@athena.mit.edu (Francesco Caserta) writes:
>>>> Do you know whether your equipment can use 50 Hz AC? If the
>>>> equipment does not explicitly state that it can accept 50 Hz,
>>>> then not only will the equipment not work but it will probably
>>>> be damaged and in addition will be a fire hazard (components
>>>> will overheat). 
>> 
>> I doubt this very much. These days the only compent which could
>> get a little warmer is the transformer, but usually not to a
>> dangerous extent. After the transformer everything is DC and
>> therefor does not care about what frequency the AC had previously.
>
>fine so far.  Note the word "usually".  

usually, referring mainly to linear power supplies.  Don't even think
about doing this with switching power supplies...

   - Kevin Wang
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kwang@polyslo.calpoly.edu, or kwang@hermes.calpoly.edu
                  New Crossbred ISMs for the 90's
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