X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Fri, 25 Aug 2006 02:06:05 -0400 Message-ID: X-Original-Return-Path: Received: from vms040pub.verizon.net ([206.46.252.40] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTP id 1347836 for lml@lancaironline.net; Fri, 25 Aug 2006 01:23:14 -0400 Received: from jacky0da39824a ([71.111.172.158]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0J4J00HWQG99PPH3@vms040.mailsrvcs.net> for lml@lancaironline.net; Fri, 25 Aug 2006 00:22:25 -0500 (CDT) X-Original-Date: Thu, 24 Aug 2006 22:22:06 -0700 From: "Tom Gourley" Subject: Re: [LML] Dual bus architecture X-Original-To: "Lancair Mailing List" Reply-to: "Tom Gourley" X-Original-Message-id: <002501c6c806$6877d2c0$650610ac@jacky0da39824a> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Mailer: Microsoft Outlook Express 6.00.2900.2869 Content-type: multipart/alternative; boundary="----=_NextPart_000_0022_01C6C7CB.BB6B0780" X-Priority: 3 X-MSMail-priority: Normal References: This is a multi-part message in MIME format. ------=_NextPart_000_0022_01C6C7CB.BB6B0780 Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: quoted-printable Fred, Thanks for supplying the Columbia wiring diagram; very interesting. = Schottky diodes are definitely the way to go. Something like a MBRB4030 = might work well in this application, for 12V systems. You can order = them on-line through Digi-Key, and I'm sure other suppliers. The = MBRB4030 will handle up to 40A with only a 0.55V drop. Don't forget to = heatsink the diode as 40A at 0.55V is 22W. Higher currents and voltages = are available. Try the ON Semiconductor = (http://www.onsemi.com/PowerSolutions/parametrics.do?id=3D815) and = International Rectifier (http://www.irf.com/product-info/diodes/) = websites. Tom Gourley ----- Original Message -----=20 From: Fred Moreno=20 To: Lancair Mailing List=20 Sent: Thursday, August 24, 2006 10:37 AM Subject: [LML] Dual bus architecture If you want to see an FAA-approved electrical system for an = all-electric airplane, see the Columbia operator=92s manual, available = from Columbia Aircraft on line. To save you the search, I printed, = scanned, and attached the appropriate page. There is a lot of wisdom = embedded in this comparatively simple diagram. When you see those big = diodes, think of the low voltage drop Shotky diodes from Perehelion = Designs. =93PFD=94 means =93primary flight display.=20 Fred Moreno -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.5/426 - Release Date: = 23/08/2006 -------------------------------------------------------------------------= ----- -- For archives and unsub http://mail.lancaironline.net/lists/lml/ ------=_NextPart_000_0022_01C6C7CB.BB6B0780 Content-Type: text/html; charset="windows-1250" Content-Transfer-Encoding: quoted-printable
Fred,
 
Thanks for supplying the Columbia = wiring diagram;=20 very interesting.  Schottky diodes are definitely the way to = go. =20 Something like a MBRB4030 might work well in this application, for 12V=20 systems.  You can order them on-line through = Digi-Key, and=20 I'm sure other suppliers.  The MBRB4030 will handle up to 40A with = only a=20 0.55V drop.  Don't forget to heatsink the diode as 40A at 0.55V is=20 22W.  Higher currents and voltages are available.  Try = the ON=20 Semiconductor (htt= p://www.onsemi.com/PowerSolutions/parametrics.do?id=3D815)=20 and International Rectifier (http://www.irf.com/produ= ct-info/diodes/)=20 websites.
 
Tom Gourley
----- Original Message -----
From:=20 Fred Moreno
Sent: Thursday, August 24, 2006 = 10:37=20 AM
Subject: [LML] Dual bus=20 architecture

If you want to see an = FAA-approved=20 electrical system for an all-electric airplane, see the = Columbia operator=92s manual, = available from=20 Columbia Aircraft on line.  To save you the search, I printed, = scanned,=20 and attached the appropriate page.  There is a lot of wisdom = embedded in=20 this comparatively simple diagram.  When you see those big = diodes, think=20 of the low voltage drop Shotky diodes from Perehelion Designs.  = =93PFD=94=20 means =93primary flight display.

 

Fred=20 Moreno


--
No virus found in this outgoing = message.
Checked by=20 AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.5/426 - = Release=20 Date: 23/08/2006

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For archives and unsub=20 = http://mail.lancaironline.net/lists/lml/
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