1 Jun
1998
1 Jun
'98
3:06 p.m.
At 04:23 PM 01-06-98 -0400, Carl R. Friend wrote:
Shipboard applications are frequently run at 440 Hz
as well as
aircraft; it's quite common in military environments as it keeps the
transformers small. Actually, I believe it's 400 Hz, not 440, but
whats a few ticks between friends?
As the topic drifts away from computers, I've just got to ask how they
isolate equipment running at 440Hz (or 400Hz). 50Hz hum is bad enough, but
440Hz is rather
noticeable. Of course, for those of us with perfect pitch, we'd notice line
frequency changes of a few 10s of Hz. Perhaps I should volunteer for
aircraft line frequency monitor :-)
Huw Davies | e-mail: Huw.Davies(a)latrobe.edu.au
Information Technology Services | Phone: +61 3 9479 1550 Fax: +61 3 9479
1999
La Trobe University | "If God had wanted soccer played in the
Melbourne Australia 3083 | air, the sky would be painted green"