From owner-freebsd-stable Mon Mar 13 13:22:33 2000 Delivered-To: freebsd-stable@freebsd.org Received: from server1.huntsvilleal.com (server1.huntsvilleal.com [207.13.224.7]) by hub.freebsd.org (Postfix) with ESMTP id 5F65137BED3 for ; Mon, 13 Mar 2000 13:22:23 -0800 (PST) (envelope-from kris@hiwaay.net) Received: from barricuda.bsd.nws.net (kris.huntsvilleal.com [207.13.224.46]) by server1.huntsvilleal.com (8.9.3/8.9.3) with ESMTP id QAA28942; Mon, 13 Mar 2000 16:03:17 -0500 Received: from localhost (localhost [127.0.0.1]) by barricuda.bsd.nws.net (8.9.3/8.9.3) with ESMTP id PAA30004; Mon, 13 Mar 2000 15:22:14 -0600 (CST) (envelope-from kris@hiwaay.net) Date: Mon, 13 Mar 2000 15:22:14 -0600 (CST) From: Kris Kirby To: Brad Knowles Cc: FreeBSD-STABLE Mailing List Subject: Re: Weirdest crash I ever saw... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 13 Mar 2000, Brad Knowles wrote: > > Two words: Isolation Transformer. > > Got any URLs for these products? I'd like to learn more about them. > > Thanks! I do know that Sola makes some. Look toward the UPS vendors and power systems vendors. A good (heavy) quality sine-wave UPS will have an isolation transformer in it; I've seen large BEST units that did, and could be instructed to act as such. The terrible side effect of the isolation transformer (which in itself is a 1:1 transformer) is that it always draws it's rated power, whether under load or not. Adjust for the heat accordingly. --- Kris Kirby, KE4AHR | TGIFreeBSD... 'Nuff said. | ------------------------------------------------------- "God gave them the ability to reproduce... ... Science gave us the hope they won't." -KBK To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message