X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 02 Jul 2011 23:34:10 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5040506 for lml@lancaironline.net; Sat, 02 Jul 2011 09:01:52 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.67; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=gwOk7Mo6Yh6PME6USVgMr8HhM21BbthLxnLWsbNLP7eCZYR7i7S0S78VEIsNcTDx; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [64.223.166.158] (helo=[192.168.1.24]) by elasmtp-scoter.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1Qczoy-0006qK-SA for lml@lancaironline.net; Sat, 02 Jul 2011 09:01:17 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: multipart/alternative; boundary=Apple-Mail-985-591994853 Subject: Re: [LML] Noisy AeroLed nav/strobe lights X-Original-Date: Sat, 2 Jul 2011 09:01:16 -0400 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1082) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da94089b872882d464480229236a09bfa124e350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 64.223.166.158 --Apple-Mail-985-591994853 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Tony, I don't know what power supply the aero-led uses. I found that buck puck drivers are quite noisy. Here is the advice I = got in these two messages from the supplier: --------- Good Morning Colyn Case, Unfortunately due to the small size of the BuckPucks there really = isn't much space to reduce the noise generated internally. You can add = filtering externally via a faraday cage or using a combination of = capacitors. That may or may not reduce the noise to an acceptable = level. The other option we have is a newer driver the A009 BuckBlock, = or the A011 FlexBlock. You can find the data sheets and additional = information on both products at the following = link:http://www.luxdrive.com/products/ We have not run a full range of = tests but we do know they are less nosy than our older drivers. At this = time we just don't know by how much. If you have any additional = questions don't hesitate to contact us. Regards, Mike ---------------- As for the capacitors you can try the following, put a an aluminum 10uF, = tantalum 1-10uF, and a ceramic 0.1-1uF in parallel on the input of the = driver. Make sure the voltage rating is double what you plan on using. = If you have any other questions don't hesitate to contact us. ----------------------------- On Jul 2, 2011, at 1:23 AM, Tony Moradian wrote: > Hey Gang >=20 > Have any of you had any experience with AeroLed lights. Mine create a = pulsating noise when turned on. You can hear it on the headset when tx = or Rx. We have installed an isolating diode with no success. It is = shielded wire and properly grounded.=20 >=20 > Sent from mobile phone > Tony Moradian > L2k N444HL >=20 >=20 > -- > For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html --Apple-Mail-985-591994853 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Tony, = I don't know what power supply the aero-led uses.

I = found that buck puck drivers are quite noisy.  Here is the advice I = got in these two messages from the = supplier:

---------
Good Morning Colyn Case,  Unfortunately due to the = small size of the BuckPucks there really isn't much space to reduce the = noise generated internally.  You can add filtering externally via a = faraday cage or using a combination of capacitors.  That may or may = not reduce the noise to an acceptable level.  The other option we = have is a newer driver the A009 BuckBlock, or the A011 FlexBlock.  = You can find the data sheets and additional information on both products = at the following link:http://www.luxdrive.com/product= s/  We have not run a full = range of tests but we do know they are less nosy than our older = drivers.  At this time we just don't know by how much.  If you = have any additional questions don't hesitate to contact us.


Mike
----------------
As for the = capacitors you can try the following, put a an aluminum 10uF, tantalum = 1-10uF, and a ceramic 0.1-1uF in parallel on the input of the = driver.  Make sure the voltage rating is double what you plan on = using.  If you have any other questions don't hesitate to contact = us.
-----------------------------

On Jul 2, 2011, at 1:23 AM, Tony = Moradian wrote:

Hey Gang

Have any of you had any experience = with AeroLed lights.  Mine create a pulsating noise when turned on. = You can hear it on the headset when tx or Rx. We have installed an = isolating diode with no success. It is shielded wire and properly = grounded.

Sent from mobile phone
Tony Moradian
L2k = N444HL


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