[time-nuts] No more 60Hz! TEC Elimination

David VanHorn D.VanHorn at elec-solutions.com
Mon Jun 27 18:36:14 UTC 2011

They were talking about a very small drift here. Even if the change were ten HOURS in a year, that's one part in 876.
I highly doubt your shaver is going to be affected by grid tolerance.

I wouldn't plug a 60 hz model into 50 hz, but that's different.

From: time-nuts-bounces at febo.com [time-nuts-bounces at febo.com] On Behalf Of Poul-Henning Kamp [phk at phk.freebsd.dk]
Sent: Monday, June 27, 2011 9:39 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] No more 60Hz! TEC Elimination

In message <4E086D33.6040701 at ozindfw.net>, Oz-in-DFW writes:
>On 6/24/2011 9:20 PM, Will Matney wrote:
>> However, I should have
>> said, one should never run a 60 Hz transformer, or motor, on the same line
>> voltage it was rated for at a lower 50 Hz.
>Most modern commodity transformers for electronic power supplies are
>specified for rated performance from 47 to 63 Hz.

The only thing I know of, apart from clocks, that you should not run
on the wrong frequency are oldfashioned mechanical shavers.

If it has a motor you're fine, but if it just has a magnet and a
coil and relies on mechanical resonance: don't even think about it.

Anything else:  Just plug it in, after you checked the 110/200 V setting.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

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