1 Jun
1998
1 Jun
'98
8:23 a.m.
On Mon, 01 Jun 1998 14:49:39 rigdonj(a)intellistar.net remarked:
Oddly enough a lot of the HP stuff is spec'd to
run on 50 to
440 Hz. I'm not sure why unless it's to allow it to also be used
in aircraft but that doesn't seem likely.
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?
On a similar note, ferroresonant transformers can do some very
bizarre things when offered a mains frequency they weren't designed
for. DG's Eclipse S/230 uses a single resonant transformer, rectifiers,
and filter caps for its power supply and little else. The specifications
call for a mains frequency deviation of under 1/2 Hz in either
direction. However, if the frequency is good, the regulation that
the supply gives is quite remarkable.
______________________________________________________________________
| | |
| Carl Richard Friend (UNIX Sysadmin) | West Boylston |
| Minicomputer Collector / Enthusiast | Massachusetts, USA |
| mailto:carl.friend@stoneweb.com | |
| http://www.ultranet.com/~engelbrt/carl/museum/ | ICBM: N42:21 W71:46 |
|________________________________________________|_____________________|