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From: alford@ecsvax.UUCP (Ross Alford)
Newsgroups: net.micro
Subject: Using 220V, 50 Hz AC?
Message-ID: <1639@ecsvax.UUCP>
Date: Sat, 31-May-86 22:39:31 EDT
Article-I.D.: ecsvax.1639
Posted: Sat May 31 22:39:31 1986
Date-Received: Mon, 2-Jun-86 16:26:04 EDT
Distribution: net
Organization: Duke University Zoology
Lines: 19


I have some questions about using devices intended for 115 volt,
60 Hz AC in countries that have 220V, 50 Hz AC supplies.  First
of all, do the 'travel converter' type devices (eg Franzus) work
with electronic gear if the wattage ratings are compatible?  Is
there any reason to go the apparently more expensive route of
buying larger and heavier step-down transformers?  Second, and
importantly, can devices not explicitly labelled as operating at
either 50 0r 60 Hz be safely run at 50?  This includes things like
AC adapters for small electronic devices, NiCd battery chargers,
and, of course, video monitors.  Do monitors use the 60Hz AC for
any sort of synchronization?  All the monitors I have are just 
labelled 115v, 60 Hz.  Will they work at 50?  Switching power supplies
(EG Apple and Kaypro)?  Any light that anyone can shed on these
questions will be greatly appreciated.

Thanks in advance,
Ross Alford
   ...mcnc!ecsvax!alford