X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 15 Apr 2009 00:44:07 -0400 Message-ID: X-Original-Return-Path: Received: from mta21.charter.net ([216.33.127.81] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3581604 for lml@lancaironline.net; Wed, 15 Apr 2009 00:11:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.81; envelope-from=troneill@charter.net Received: from imp10 ([10.20.200.10]) by mta21.charter.net (InterMail vM.7.09.01.00 201-2219-108-20080618) with ESMTP id <20090415041037.EEUF3344.mta21.charter.net@imp10> for ; Wed, 15 Apr 2009 00:10:37 -0400 Received: from axs ([75.132.241.174]) by imp10 with charter.net id fgAd1b0063mUFT705gAdHG; Wed, 15 Apr 2009 00:10:37 -0400 X-Original-Message-ID: <345D97F732864F5CBA5AA507F13BDC66@axs> From: "terrence o'neill" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] spike suppresion diodes X-Original-Date: Tue, 14 Apr 2009 23:10:47 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0036_01C9BD56.3EDE1A30" 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_0036_01C9BD56.3EDE1A30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 No virus found in this incoming message Checked by PC Tools AntiVirus (5.0.0.22 - 10.100.057). http://www.pctools.com/free-antivirus/ No virus found in this outgoing message Checked by PC Tools AntiVirus (5.0.0.22 - 10.100.057). http://www.pctools.com/free-antivirus/ ------=_NextPart_000_0036_01C9BD56.3EDE1A30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
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 to=20 prevent the high voltage spikes... but that info is at the = airport.
The problem I had = was because I=20 had wired the landing gear so that I could pull the breaker for the = hydraulic pump, while the master eminedremained on.  The = master =20 runs continuous 12v through the solenoids, which are not continuous = duty, and I=20 melted the down solenoid, while adjusting the gear light = switches.
That caused me to = realize that=20 what Scott said was true.... the only way to prevent this happening was = to wire=20 the solenoids after the big 50a breaker for the hydraulic motor = ... which=20 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=20 solenoid.  And to obviate the spikes, wired a diode into the plus = side of=20 the solenoid... will check the diode  tomorrow at the = airport.
Terrence =
L235/320 = N211AL
 
----- Original Message -----
From:=20 genemartin=20
Sent: Tuesday, April 14, 2009 = 20:06
Subject: [LML] spike suppresion = 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 of=20 diodes.
 Terrence you posted you saved a = 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


No virus = found in=20 this incoming message
Checked by PC Tools AntiVirus (5.0.0.22 -=20 10.100.057).
http://www.pctools.com/fr= ee-antivirus/


No virus found in this outgoing message
Checked by PC Tools AntiVirus (5.0.0.22 - 10.100.057).
http://www.pctools.com/free-antivirus/
------=_NextPart_000_0036_01C9BD56.3EDE1A30--