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LEDs for strobes and position lights

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corvairkelso

Joined: 16 Aug 2008
Posts: 2

Posted: Sat Aug 16, 2008 9:34 pm Post subject: LEDs for strobes and position lights

In response to a previous question about using LED for position lights and strobe, check www.luxeonstar.com.  I have used their rebel stars in the white tri-emitter powered by their power supply, called a buck puck successfully.  The buck pucks imput 12 volts fine and output a fixed current, 700ma in my case.  I am using a group of five stars, for about 1400 lumens per side.   Luneon III stars are available in both red and green for position lights.  Mounting was a challenge, finally using NAPA 549SWD surface mount dome light as a container for them.  I used the lambertain style, which is 140 degree of coverage .  This is my first posting so please forgive any errors and for being unable to provide an actual link to the referenced web site.

Speedy11(at)aol.com
Guest

Posted: Sun Aug 17, 2008 4:13 am Post subject: LEDs for strobes and position lights

Corvairkelso,

 It sounds like you solved the mounting problem.  I've been  experimenting for some time with various LEDs for position and taxi light but  with little success on a mounting solution.  I finally gave up and bought  the high dollar Whelen units.  I found it wasn't worth my $time$ to  continue the experiment.

 Do you have and photos posted for us to see?

 Stan Sutterfield

  

  	  Quote: 	
		  In    response to a previous question about using LED for position lights and    strobe, check www.luxeonstar.com.  I have used their rebel stars in the    white tri-emitter powered by their power supply, called a buck puck    successfully.  The buck pucks imput 12 volts fine and output a fixed    current, 700ma in my case.  I am using a group of five stars, for about    1400 lumens per side.   Luneon III stars are available in both red    and green for position lights.  Mounting was a challenge, finally using    NAPA 549SWD surface mount dome light as a container for them.  I used the    lambertain style, which is 140 degree of coverage 	


 

  



Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos.

  [quote][b]

Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Sun Aug 17, 2008 6:05 am Post subject: Re: LEDs for strobes and position lights

A remarkable coincidence perhaps--I just listed a bunch of these on Ebay:



LuxDrive Powerpuck LED pwr supply 700 ma 

      Ebay item number: 180278091883 



or:  http://tiny.cc/aujh1



I used these for my white LED tail light but changed to linear regulators. My loss is your gain.



"it's faster horses, younger women, older whiskey, and more money...."

--Cowboy Poet Tom T. Hall

_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

rockyjs

Joined: 08 Oct 2007
Posts: 7

Posted: Mon Aug 18, 2008 4:36 am Post subject: LEDs for strobes and position lights

I just began flying using 700ma buck puck power supplies and 2 parallel 3 series K2 Stars.  The power supplies are hitting my VHF radios with a lot of RFI.  I’ve got some .1uf capacitors and ferrite beads to try and clean these up.  I know of one other new aircraft that wound up removing the power supply and using a series resistor after cleaning up the noise, but losing some range on his radios.  I’d like to solve the issue using the power supply.  Anyone have any experience with cleaning these devices up?  

Thanks  

Rocky  

       [quote][b]

nuckolls.bob(at)cox.net
Guest

Posted: Mon Aug 18, 2008 6:17 am Post subject: LEDs for strobes and position lights

At 07:29 AM 8/18/2008 -0500, you wrote:



 	  Quote: 	
		  I just began flying using 700ma buck puck power supplies and 2 parallel 3 

series K2 Stars.  The power supplies are hitting my VHF radios with a lot 

of RFI.  I ve got some .1uf capacitors and ferrite beads to try and clean 

these up.  I know of one other new aircraft that wound up removing the 

power supply and using a series resistor after cleaning up the noise, but 

losing some range on his radios.  I d like to solve the issue using the 

power supply.  Anyone have any experience with cleaning these devices up?


	


   Are you sure the noise is coming in through the

   antenna? If the noise is conducted, the filtering

   process could be different.



   Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

etienne.phillips(at)gmail
Guest

Posted: Mon Aug 18, 2008 6:17 am Post subject: LEDs for strobes and position lights

Hi John



There are 2 options that I would consider doing if I were in your position...



1) Put a 1Ohm resistor in the supply line, and a range of 4 or 5 capacitors from 0.1uF to 10,000uF right at the supply to the regulator. This should create a very wide-band filter on the supply line. This won't help if the noise in your radio is coming from EMI through the receiver (rather than through the power line). This is a fairly quick and easy mod to make though.

 

2) Build yourself a linear (i.e. not switching) regulator to replace the BuckPuck. They're fairly simple to set up, and pretty robust. Assuming a forward bias of the Luxeons to be 3.9V (at)1A, using a properly heat-sinked 7810 with a 2.2Ohm 5W resistor in series with 2 Luxeons will give you a very clean supply. However, if your bus voltage drops below about 10V, these babies are going to get a bit dim.

 

But that's just me. Maybe someone will come up with a better suggestion?



Etienne



2008/8/18 John McKiernan <rockyjs(at)mchsi.com (rockyjs(at)mchsi.com)>

 [quote]             

I just began flying using 700ma buck puck power supplies and 2 parallel 3 series K2 Stars.  The power supplies are hitting my VHF radios with a lot of RFI.  I've got some .1uf capacitors and ferrite beads to try and clean these up.  I know of one other new aircraft that wound up removing the power supply and using a series resistor after cleaning up the noise, but losing some range on his radios.  I'd like to solve the issue using the power supply.  Anyone have any experience with cleaning these devices up?  

Thanks  

Rocky  

[b]

etienne.phillips(at)gmail
Guest

Posted: Mon Aug 18, 2008 6:35 am Post subject: LEDs for strobes and position lights

And then I would read your mail properly to see that you're using K2 Stars and not Luxeon III's, which have a slightly different Voltage / Current ratio... Doh.



There are 2 types of K2 Stars... The 100 lumen and the 75 lumen.

 

The so-called 100 Lumen can actually be driven up to 140 lumen, at 1.5A, which makes the 7810 a bad choice if you want to drive it at 1.5A.



Same methodology applies though. Regulate to a known voltage, just above the series voltage of however many LEDs you choose, then use a resistor to regulate the current and step down the voltage the last bit.

 



2008/8/18 Etienne Phillips <etienne.phillips(at)gmail.com (etienne.phillips(at)gmail.com)>

[quote] Hi John



There are 2 options that I would consider doing if I were in your position...



1) Put a 1Ohm resistor in the supply line, and a range of 4 or 5 capacitors from 0.1uF to 10,000uF right at the supply to the regulator. This should create a very wide-band filter on the supply line. This won't help if the noise in your radio is coming from EMI through the receiver (rather than through the power line). This is a fairly quick and easy mod to make though.

  

2) Build yourself a linear (i.e. not switching) regulator to replace the BuckPuck. They're fairly simple to set up, and pretty robust. Assuming a forward bias of the Luxeons to be 3.9V (at)1A, using a properly heat-sinked 7810 with a 2.2Ohm 5W resistor in series with 2 Luxeons will give you a very clean supply. However, if your bus voltage drops below about 10V, these babies are going to get a bit dim.

  

But that's just me. Maybe someone will come up with a better suggestion?



Etienne



2008/8/18 John McKiernan <rockyjs(at)mchsi.com (rockyjs(at)mchsi.com)> 

  	  Quote: 	
		               

I just began flying using 700ma buck puck power supplies and 2 parallel 3 series K2 Stars.  The power supplies are hitting my VHF radios with a lot of RFI.  I've got some .1uf capacitors and ferrite beads to try and clean these up.  I know of one other new aircraft that wound up removing the power supply and using a series resistor after cleaning up the noise, but losing some range on his radios.  I'd like to solve the issue using the power supply.  Anyone have any experience with cleaning these devices up?  

Thanks  

Rocky  

	




 [b]

harley(at)AgelessWings.co
Guest

Posted: Mon Aug 18, 2008 6:45 am Post subject: LEDs for strobes and position lights

Everyone...

 

 As long as we're back on this topic again, has anyone visited the AveoFlash guys when they were at Oshkosh this year?  

 

 And, if so, what are your opinions of their product for wingtip strobe and position lighting?

 www.aveoaviationlights.com/products/AveoFlash/index.php

 

 Still considering them...

 

 Harley Dixon

 Long EZ N28EZ (working on the engine for awhile...before I go back to sanding the wing!)

 Hangar 29, Airport

 Canandaigua, NY

 

    [quote][b]

AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Mon Aug 18, 2008 7:15 am Post subject: LEDs for strobes and position lights

Loved them, don't know if the lumens are enough at a distance.  From 10 feet they were great.  Let's try 1,000 yards.  

   

Do not want them in their encased plastic bezel.  Would like to install them in my own covers.  

   

John Cox  

       

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Harley

 Sent: Monday, August 18, 2008 7:43 AM

 To: aeroelectric-list(at)matronics.com

 Subject: Re: LEDs for strobes and position lights  

  

  

   

Everyone...

 

 As long as we're back on this topic again, has anyone visited the AveoFlash guys when they were at Oshkosh this year?  

 

 And, if so, what are your opinions of their product for wingtip strobe and position lighting?

 www.aveoaviationlights.com/products/AveoFlash/index.php

 

 Still considering them...

 

 Harley Dixon

 Long EZ N28EZ (working on the engine for awhile...before I go back to sanding the wing!)

 Hangar 29, Airport

 Canandaigua, NY  [quote]  [/b][/b][/b][/b][/b][/b]http://www.matronics.com/Navigator?AeroElectric-List[/b][/b][/b][/b]http://forums.matronics.com[/b][/b][/b][/b][/b]http://www.matronics.com/contribution[/b][/b] [b]

sshook(at)cox.net
Guest

Posted: Mon Aug 18, 2008 9:03 am Post subject: LEDs for strobes and position lights

I loved them.  I thought the price was right too.  When I figured in the LED’s, power-pucks, assembly (was going to do something like Jeff did for his RV - http://www.jeffsrv-7a.com/LEDPROJECT1.htm ), strobe tubes, strobe power supply, and tail light - the price was about the same.    

                                

 Scott R. Shook 

 RV-7A (Building) 

 N696JS (Reserved)   

        

  

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Harley

 Sent: Monday, 18 August, 2008 07:43

 To: aeroelectric-list(at)matronics.com

 Subject: Re: AeroElectric-List: LEDs for strobes and position lights  

  

   

Everyone...

 

 As long as we're back on this topic again, has anyone visited the AveoFlash guys when they were at Oshkosh this year?  

 

 And, if so, what are your opinions of their product for wingtip strobe and position lighting?

 www.aveoaviationlights.com/products/AveoFlash/index.php

 

 Still considering them...

 

 Harley Dixon

 Long EZ N28EZ (working on the engine for awhile...before I go back to sanding the wing!)

 Hangar 29, Airport

 Canandaigua, NY   	  Quote: 	
		    http://www.matronics.com/Navigator?AeroElectric-List 	
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