Date: Sun, 3 Dec 1995 21:17:24 -0700 (MST) From: Don Yuniskis <dgy@rtd.com> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: freebsd-hackers@freefall.FreeBSD.org (FreeBSD hackers) Subject: Re: No Thumbs??? (lack of concensus) Message-ID: <199512040417.VAA20682@seagull.rtd.com> In-Reply-To: <199512041420.OAA26356@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Dec 4, 95 02:20:43 pm
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It seems that Michael Smith said: > Jordan K. Hubbard stands accused of saying: > > Here's the rule of thumb: > > > > If dropping the transformer for the PS on your foot from waist height > > would break your foot, then the PS is big enough. :-) > > I have a set of E-cores (phillips I think) from a 750W 5V PSU kicking around > in a drawer here somewhere. The whole assembly, including windings and > frame, probably weighed about a kilo. > > Unless you have osteoperosis, this may bruise but not break. 8) Yeah, and if you get a good front-end switching at several hundred Khz, it probably wouldn't even *bruise*! Of course, that's *not* typical... :> > To answer the original question; a 60W switching supply will run a single > 30W 5.25" drive. It will _not_ run two of them, although it might look > like it will for a while. Fine. But I suspect it *would* run two 15W drives -- though the question of sequencing spindles might still be an issue at startup! Correct?
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