[time-nuts] HP 5370A temp
cadbloke at hotmail.com
Fri Feb 11 13:12:19 UTC 2011
if you happen to be state-side, I imagine 120V fans are pretty common.
However, if you live somewhere where they 'don't do things by halves', low voltage AC fans are hard to come by!
Any bling PC shop can supply a range of quiet DC fans, so it comes down to practicalities.
Brushless DC motors use a multi-kHz inverter which produces a much more efficient motor than running it at 50/60Hz.
(you'll find a lot of 110VAC 400Hz used in aircraft for the same reason).
> From: "Rick Karlquist" <richard at karlquist.com>
> Subject: Re: [time-nuts] time-nuts Digest, Vol 79, Issue 31
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> <8f218791d826fb7b3e4a798756d8e0b8.squirrel at webmail.sonic.net>
> Content-Type: text/plain;charset=iso-8859-1
> It isn't clear why you need to change to 12V fans.
> Why not "modern" 120V fans?
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