X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 15 Apr 2009 07:51:27 -0400 Message-ID: X-Original-Return-Path: Received: from vms173015pub.verizon.net ([206.46.173.15] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3581740 for lml@lancaironline.net; Wed, 15 Apr 2009 05:30:53 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.15; envelope-from=n5zq@verizon.net Received: from newness ([173.72.139.201]) by vms173015.mailsrvcs.net (Sun Java(tm) System Messaging Server 6.3-7.04 (built Sep 26 2008; 32bit)) with ESMTPA id <0KI400E3MYE75NXF@vms173015.mailsrvcs.net> for lml@lancaironline.net; Wed, 15 Apr 2009 04:30:08 -0500 (CDT) X-Original-Message-id: <50DD60FA66594EF49948A5CFF6D31541@newness> From: "Bill" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: spike suppresion diodes X-Original-Date: Wed, 15 Apr 2009 05:30:09 -0400 MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_0015_01C9BD8B.3DB2C680" X-Priority: 3 X-MSMail-priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0015_01C9BD8B.3DB2C680 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Consider these instead of diodes. = http://www.periheliondesign.com/suppressors/SnapJack.pdf Bill Harrelson N5ZQ 320 1,650 hrs N6ZQ IV under construction ----- Original Message -----=20 From: terrence o'neill=20 To: lml@lancaironline.net=20 Sent: Wednesday, April 15, 2009 12:44 AM Subject: [LML] Re: spike suppresion diodes Hi Gene, The post from Scott and the schematic doesn't have the spec for the = diode on it, but I recall talking to a local electronic guru who assured = me that a diode from Radio Shack would work to prevent the high voltage = spikes... but that info is at the airport. The problem I had was because I had wired the landing gear so that I = could pull the breaker for the hydraulic pump, while the master = eminedremained on. The master runs continuous 12v through the = solenoids, which are not continuous duty, and I melted the down = solenoid, while adjusting the gear light switches. That caused me to realize that what Scott said was true.... the only = way to prevent this happening was to wire the solenoids after the big = 50a breaker for the hydraulic motor ... which I did. Thus, as soon as = the pump increases the pressure enough the pressure switches cut off = voltage to the solenoids. I also replaced the melted solenoid. And to obviate the spikes, wired = a diode into the plus side of the solenoid... will check the diode = tomorrow at the airport. Terrence=20 L235/320 N211AL ----- Original Message -----=20 From: genemartin=20 To: lml@lancaironline.net=20 Sent: Tuesday, April 14, 2009 20:06 Subject: [LML] spike suppresion diodes Does anyone have a part# for the Diodes. I was going to place a = order with Mouser but am overwhelmed by the 20 some pages of diodes. Terrence you posted you saved a schematic from Scott K. could you = or Scott post that again, I remember seeing it and thought I saved it = but can't find it . Gene Martin LNC2/320 ------=_NextPart_000_0015_01C9BD8B.3DB2C680 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Consider these instead of diodes.  = http://= www.periheliondesign.com/suppressors/SnapJack.pdf
 
Bill Harrelson
N5ZQ 320 1,650 hrs
N6ZQ  IV under = construction
 
 
 
 
----- Original Message -----
From:=20 terrence=20 o'neill
Sent: Wednesday, April 15, 2009 = 12:44=20 AM
Subject: [LML] Re: spike = suppresion=20 diodes

Hi = Gene,
 
The post from = Scott and the=20 schematic doesn't have the spec for the diode on it, but I recall = talking to a=20 local electronic guru who assured me that a diode from Radio Shack = would work=20 to prevent the high voltage spikes... but that info is at the=20 airport.
The problem I had = was because=20 I had wired the landing gear so that I could pull the breaker for = the=20 hydraulic pump, while the master eminedremained on.  The=20 master  runs continuous 12v through the solenoids, which are not=20 continuous duty, and I melted the down solenoid, while adjusting the = gear=20 light switches.
That caused me to = realize=20 that what Scott said was true.... the only way to prevent this = happening was=20 to wire the solenoids after the big 50a breaker for the = hydraulic motor=20 ... which I did.  Thus, as soon as the pump increases the = pressure enough=20 the pressure switches cut off voltage to the solenoids.
I = also replaced the=20 melted solenoid.  And to obviate the spikes, wired a diode into = the plus=20 side of the solenoid... will check the diode  tomorrow at the=20 airport.
Terrence =
L235/320 = N211AL
 
----- Original Message -----
From:=20 genemartin
Sent: Tuesday, April 14, 2009 = 20:06
Subject: [LML] spike = suppresion=20 diodes

Does anyone have a part# for the = Diodes. I was=20 going to place a order with Mouser but am overwhelmed by the 20 some = pages=20 of diodes.
 Terrence you posted you saved = a=20 schematic from Scott K. could you or Scott post that again, I = remember=20 seeing it and thought I saved it but can't find it .
Gene Martin
LNC2/320
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