From owner-freebsd-hackers Sun Sep 30 18:35: 7 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from cain.gsoft.com.au (genesi.lnk.telstra.net [139.130.136.161]) by hub.freebsd.org (Postfix) with ESMTP id 8595437B40F; Sun, 30 Sep 2001 18:35:01 -0700 (PDT) Received: from cain.gsoft.com.au (root@spare0.gsoft.com.au [203.38.152.114]) by cain.gsoft.com.au (8.8.8/8.8.8) with ESMTP id LAA24487; Mon, 1 Oct 2001 11:04:54 +0930 (CST) (envelope-from doconnor@gsoft.com.au) Message-ID: X-Mailer: XFMail 1.5.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Mon, 01 Oct 2001 11:04:54 +0930 (CST) From: "Daniel O'Connor" To: Ronald G Minnich Subject: Re: power supplies Cc: freebsd-hackers@FreeBSD.ORG, dphoenix@bravenet.com, babkin@FreeBSD.ORG Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 01-Oct-2001 Ronald G Minnich wrote: > I've seen similar stuff although have not (yet) fried a PS. I've had > chipset lockup that requred unplugging AC for 30+ seconds before it was > resolved. A simple power cycle with the power switch was not sufficient. We found this problem at work due to an interface card (of custom design) that didn't have any isolation. Power was flowing back from the controlled device and tricking the PSU into thinking it was still on. > Soft power off is not as perfect. No, but it's pretty neat :) --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message