From owner-freebsd-hardware Mon Nov 13 17:56:16 1995 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id RAA11843 for hardware-outgoing; Mon, 13 Nov 1995 17:56:16 -0800 Received: from bunyip.cc.uq.oz.au (bunyip.cc.uq.oz.au [130.102.2.1]) by freefall.freebsd.org (8.6.12/8.6.6) with SMTP id RAA11838 for ; Mon, 13 Nov 1995 17:56:13 -0800 Received: from cc.uq.oz.au by bunyip.cc.uq.oz.au id <00832-0@bunyip.cc.uq.oz.au>; Tue, 14 Nov 1995 11:55:21 +1000 Received: from netfl15a.devetir.qld.gov.au by pandora.devetir.qld.gov.au (8.6.10/DEVETIR-E0.3a) with ESMTP id LAA05684 for ; Tue, 14 Nov 1995 11:22:46 +1000 Received: from localhost by netfl15a.devetir.qld.gov.au (8.6.8.1/DEVETIR-0.1) id BAA05705 for ; Tue, 14 Nov 1995 01:21:24 GMT Message-Id: <199511140121.BAA05705@netfl15a.devetir.qld.gov.au> X-Mailer: exmh version 1.6.4 10/10/95 To: hardware@freebsd.org Subject: Power supplies and their vagaries X-Face: 3}heU+2?b->-GSF-G4T4>jEB9~FR(V9lo&o>kAy=Pj&;oVOc<|pr%I/VSG"ZD32J>5gGC0N 7gj]^GI@M:LlqNd]|(2OxOxy@$6@/!,";-!OlucF^=jq8s57$%qXd/ieC8DhWmIy@J1AcnvSGV\|*! >Bvu7+0h4zCY^]{AxXKsDTlgA2m]fX$W@'8ev-Qi+-;%L'CcZ'NBL!@n?}q!M&Em3*eW7,093nOeV8 M)(u+6D;%B7j\XA/9j4!Gj~&jYzflG[#)E9sI&Xe9~y~Gn%fA7>F:YKr"Wx4cZU*6{^2ocZ!YyR Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 14 Nov 1995 11:21:24 +1000 From: Stephen Hocking Sender: owner-hardware@freebsd.org Precedence: bulk I have an old case with a 220w power supply with the following items being driven from it - 486dx2 mboard with 8Mb of ram, Barracuda 2Gb drive, Wangtek QIC 150Mb tape (QIC-02 controller, it was a cheapie), 2 fans (excluding the power supply fan) & a 3.5 floppy drive. I have learnt something valuable. Do not use those little power cable splitters on media devices (hard disks, tapes), especially when you share them with fans. Gives you all sorts of weird errors. I was bit by this once for the 2Gb drive, and again just now for the tape drive, which could not even tolerate sharing its cable with a mostly inactive floppy drive. I was about to send in a rather crisp bug report for the wangtek QIC-02 driver. Fortunately shuffling around the power cables appears to have solved the problem. Stephen -- I do not speak for the Worker's Compensation Board of Queensland - They don't pay me enough for that!