X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Tue, 01 Dec 2009 20:47:56 -0500 Message-ID: X-Original-Return-Path: Received: from jrcda.com ([206.130.116.53] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTPS id 3997264 for lml@lancaironline.net; Tue, 01 Dec 2009 07:40:31 -0500 Received-SPF: none receiver=logan.com; client-ip=206.130.116.53; envelope-from=hwasti@lm50.com Received: from [192.168.1.102] (207-170-226-183.static.twtelecom.net [207.170.226.183]) (authenticated bits=0) by jrcda.com (8.13.1/8.13.1) with ESMTP id nB1Cdt6d015430 for ; Tue, 1 Dec 2009 05:39:56 -0700 X-Original-Message-ID: <4B150E96.9070100@lm50.com> X-Original-Date: Tue, 01 Dec 2009 04:39:50 -0800 From: Hamid Wasti User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Gear warning indicator References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Wolfgang wrote: > Is anyone looking for a gear warning indicator ? The problem with this circuit is that it assumes what is on the other side of diodes and how the the gear switch is wired, without explicitly stating those assumptions. There is no "standard" way of doing things in the experimental aircraft world. As Dan Schaefer already pointed out, using this with an aircraft wired the way Lancair originally recommended will result in a power to ground short. The moral of the story: If you want to design things for the after market (airplanes, automobiles, toaster ovens...) make sure you are extremely familiar with how the existing systems work and EXPLICITLY state all assumptions. Regards, Hamid