Date: Sun, 9 Jan 2000 10:15:04 -0800 (PST) From: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> To: ben@scientia.demon.co.uk (Ben Smithurst) Cc: freebsd-stable@FreeBSD.ORG Subject: Re: CPU voltage (was Re: load spike strangeness) Message-ID: <200001091815.KAA19418@gndrsh.dnsmgr.net> In-Reply-To: <20000109164226.B2019@strontium.scientia.demon.co.uk> from Ben Smithurst at "Jan 9, 2000 04:42:26 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
> Rodney W. Grimes wrote: > > > Spec is +/- 5%, so 12 +5% is 13.2, your well within spec > > > > Again spec is +-5%, so -12 -5% is -13.2, your in spec, a bit high, > > > > Spec is +-5%, -5 -5% is -5.5v, your technically slightly out of spec, > > You've added *10* percent to all of these, not 5. 12+5% is 12.6, similar > for -12, and 5+5% is 5.25. Am I misunderstanding something? I suspect > so. Yea, your missing this: <|:-) Thats me with one of them orange traffic cones on my head. I applied the military spec operating ranges to a commercial piece of gear. Even so the critical operating voltages for the board are the +5 (logic) and +12 supplies (disk drive motors). All of the negative supplies are effectively no connects in modern systems causing the 10% load rule to be violated, causing absolutely horrible regulation. Ohh... and for ATX the 3.3V spec is +/-1%, not 5%. (3.27 to 3.33) -- Rod Grimes - KD7CAX @ CN85sl - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200001091815.KAA19418>