X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 27 Apr 2007 21:57:17 -0400 Message-ID: X-Original-Return-Path: Received: from vms040pub.verizon.net ([206.46.252.40] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2014211 for lml@lancaironline.net; Fri, 27 Apr 2007 21:27:18 -0400 Received: from jacky0da39824a ([71.111.115.42]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JH600I1PPCYOZI2@vms040.mailsrvcs.net> for lml@lancaironline.net; Fri, 27 Apr 2007 20:27:01 -0500 (CDT) X-Original-Date: Fri, 27 Apr 2007 18:26:51 -0700 From: "Tom Gourley" Subject: Re: [LML] 12v supply to stabilize avionics X-Original-To: "Lancair Mailing List" Reply-to: "Tom Gourley" X-Original-Message-id: <005001c78934$4cdf8450$640610ac@jacky0da39824a> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Mailer: Microsoft Outlook Express 6.00.2900.3028 Content-type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original Content-transfer-encoding: 7bit X-Priority: 3 X-MSMail-priority: Normal References: Bob, An interesting idea. Be sure to find out what the efficiency of the power supply is across its operating range, both input voltage range and output current range. When a product claims to be 95% efficient that's usually its best efficiency at a particular load and input voltage. I've seen supplies that are over 90% efficient at 85% load that drop off to less than 40% efficient at 30% load. Tom Gourley