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- From: orville%weyrich@tnet.com (Orville R. Weyrich)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: PC components & peripherals dependent on 60 Hz line frequency (FAQ?)
- Message-ID: <1992Aug19.043119.7917@weyrich.UUCP>
- Date: 19 Aug 92 04:31:19 GMT
- References: <1992Aug13.170816.7573@magnus.acs.ohio-state.edu> <1992Aug14.215745.28615@ultb.isc.rit.edu>
- Sender: orville@weyrich.UUCP (Orville R. Weyrich)
- Reply-To: tnet.com!weyrich!orville
- Organization: Weyrich Computer Consulting
- Lines: 44
-
- In article <1992Aug14.215745.28615@ultb.isc.rit.edu> ajb8886@ritvax.isc.rit.edu writes:
- >>In article <1992Aug13.170816.7573@magnus.acs.ohio-state.edu>, pjd@magnus.acs.ohio-state.edu (Peter J Dotzauer) writes:
- >>Since I'm planning on taking some PC equipment & peripherals from the U.S.
- >>(120 V, 60 Hz) to Germany (220 V, 50 Hz), I'd like to know which components
- >>and peripherals will not work correctly and should not be taken along,
- >>because they depend on the 60-Hz line frequency, which a step-down voltage
- >>converter cannot take care of.
- >>
- >
- >The 50 hz timing should really have no effect on the computer itself. The
- >power supply supplies "pure" full bridge DC at 5 and 12 volts to all computer
- >components. In addition, most power supplies have a switch on them to allow
- >them to work directly from either 110V or 220V power lines.
- >
- >As for the monitor, a lot of newer monitors can actually adapt to 110/220
- >50/60 hz and other worldwide standards automatically. Check your monitor
- >docs before you try this, unless you like living dangerously [heh heh].
- >
- >As for dot matrix printers, their power supplies are usually similar to
- >computer switching power supplies and generally supply only DC current to
- >the printer, so most will work fine on 50/hz.
- >
-
- But if your equipment has a TRANSFORMER instead of a switching power supply,
- it may run hot if fed 50 Hz when it was designed for 60 Hz.
-
- And equipment that has marginal filter capacitors may give rise to too
- much ripple if filtering 50 Hz instead of 60 Hz.
-
- And even switching power supplies may not have components built to withstand
- a 100 % over-voltage, unless they were designed that way.
-
- My inclination would be to not take any equipment with me that was not
- explicitly marked 50/60 HZ and 120/240 V.
-
-
- orville
-
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- Certified Data Processor POB 5782, Scottsdale, AZ 85261
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