From owner-freebsd-hardware Thu Dec 4 16:50:47 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id QAA20655 for hardware-outgoing; Thu, 4 Dec 1997 16:50:47 -0800 (PST) (envelope-from owner-freebsd-hardware) Received: from fly.HiWAAY.net (root@fly.HiWAAY.net [208.147.154.56]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id QAA20638 for ; Thu, 4 Dec 1997 16:50:38 -0800 (PST) (envelope-from dkelly@nospam.hiwaay.net) Received: from nospam.hiwaay.net (tnt2-76.HiWAAY.net [208.147.148.76]) by fly.HiWAAY.net (8.8.7/8.8.6) with ESMTP id SAA09359; Thu, 4 Dec 1997 18:50:12 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by nospam.hiwaay.net (8.8.8/8.8.4) with ESMTP id SAA19728; Thu, 4 Dec 1997 18:26:00 -0600 (CST) Message-Id: <199712050026.SAA19728@nospam.hiwaay.net> X-Mailer: exmh version 2.0zeta 7/24/97 To: asami@cs.berkeley.edu (Satoshi Asami) cc: hardware@freebsd.org, sales@gndrsh.aac.dev.com From: David Kelly Subject: Re: voltage regulator In-reply-to: Message from asami@cs.berkeley.edu (Satoshi Asami) of "Thu, 04 Dec 1997 04:10:54 PST." <199712041210.EAA16583@silvia.HIP.Berkeley.EDU> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 04 Dec 1997 18:26:00 -0600 Sender: owner-freebsd-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > Does anyone know of a good 3.3V -> 2.9V voltage regulator that I can > get in the San Francisco Bay Area or via mail order? I have an old > motherboard (Asus P/I-P55T2P4, old revision with only 66MHz external > clock and up to 3x multiplier) and a K6-200. It seems runs ok but the > CPU is extremely hot, and I'm worried it might melt some day. Do we know how many amps you need at 2.9? A silicon diode will drop 0.6 to 0.7v in series. If you set the MB to about 3.5 volts then you'll be just about right. Assuming there is a ready way to add the diode in series with your existing PS, between it and the CPU. -- David Kelly N4HHE, dkelly@nospam.hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.