From owner-freebsd-hackers Sun Dec 3 19:35:41 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id TAA18620 for hackers-outgoing; Sun, 3 Dec 1995 19:35:41 -0800 Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id TAA18606 for ; Sun, 3 Dec 1995 19:35:33 -0800 Received: from msmith@localhost by genesis.atrad.adelaide.edu.au (8.6.12/8.6.9) id OAA26318; Mon, 4 Dec 1995 14:06:36 GMT From: Michael Smith Message-Id: <199512041406.OAA26318@genesis.atrad.adelaide.edu.au> Subject: Re: No Thumbs??? (lack of concensus) To: dgy@rtd.com (Don Yuniskis) Date: Mon, 4 Dec 1995 14:06:35 +0000 () Cc: julian@ref.tfs.com, freebsd-hackers@freefall.freebsd.org In-Reply-To: <199512012334.QAA14245@seagull.rtd.com> from "Don Yuniskis" at Dec 1, 95 04:34:49 pm MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1079 Sender: owner-hackers@FreeBSD.ORG Precedence: bulk Don Yuniskis stands accused of saying: > Actually: > 2.5A @ 5VDC (steady state) > 0.8A @ 12VDC (steady state) Worst-case steady state, not idle. Big difference. > And: > 3.0A @ 5VDC (max) > 1.5A @ 12VDC (max) Powerup or tape start. > I'm not disagreeing. Rather, I'm just noting published specs on drives > and trying to infer their thermal characteristics in a manner comparable > to other equipment I have in similar enclosures. 'Cuda claims to be about > 13W. Some of the Hawks appear to be ~9W. The MC1991 claims to be 30W! > (comparing apples and orangatans!) Bear in mind that the 1991 has _much_ more surface area than the 'cuda, so it can dissipate more power for the same dT. -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 041-122-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] "Who does BSD?" "We do Chucky, we do." [[