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LED LANDING LIGHTS

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cfrhoads(at)YAHOO.COM
Guest

Posted: Wed Feb 18, 2009 6:37 pm Post subject: LED LANDING LIGHTS

Since I have always been unhappy with the output of my landing lights and their large appetite for power, I was happy to find some LED lights that looked very promising.  The lights from J.C. Whitney use about .5 amps and their output is MUCH better than the old halogen ones.  Every thing is great until I try to transmit and then there is a huge amount of interference.

 

  

Any suggestions? 

  

Chuck Rhoads 

A100  Louisville, KY 

110 hours 

 

__________________________________________________________

   



           [quote][b]

craigb(at)onthenet.com.au
Guest

Posted: Thu Feb 19, 2009 2:59 am Post subject: LED LANDING LIGHTS

are  you sure your lights are LED, in theory LED should offer nil EM interference.  Maybe HID???

  

 [quote]   --

frans(at)paardnatuurlijk.
Guest

Posted: Thu Feb 19, 2009 3:26 am Post subject: LED LANDING LIGHTS

craig bastin wrote:

 	  Quote: 	
		   are you sure your lights are LED, in theory LED should offer nil EM

 interference. Maybe HID???


	


LED's use a much lower voltage than 12 volts. If I were to build a

powerfull LED system, I would use a switching power supply to avoid

converting to much voltage into heat. Switching power supplies are

notorious for their ability to generate EM interference.



-- 

Frans Veldman

rick.sivier(at)btinternet
Guest

Posted: Thu Feb 19, 2009 8:27 am Post subject: LED LANDING LIGHTS

I'm sure that I saw something in a magazine a little while ago about LED

strobes.  Has anyone had any direct experience of these?  Can they be as

bright as a normal strobe?



Thanks



Rick



--

craigb(at)onthenet.com.au
Guest

Posted: Thu Feb 19, 2009 12:03 pm Post subject: LED LANDING LIGHTS

I made my own LED strobes. I modified a circuit for flashing lighthouse to

get the desired pulses and duration

basically its a 555 timer running a decade step counter to give you ten

possible "ON" positions for the strobes

then tapped off that on say pin 1 and 3 which gives you a nice quick double

pulse and and about 4 seconds off

time. this can be adjusted by the resistor on the 555 timer. This the drives

the LED strobe head which consists

of a 3x3 array of 280,000 mcd leds which makes it about the same size as

typical strobe, but you could make

it any shape you want just by moving the LED's around. The LED's are running

on 12v but they are set up in series. Its took a little bit of fiddling but

after 2 test runs I got the resistance correct and they ran for 2 months

on a car battery before the battery went flat. As for brightness, I would

say they are equally as bright as a

comercial strobe unit. given the slight overdiving of the leds they should

be around 3000 candle power per pulse.

they are easily visible in full sun enough to not be desirable to look at.



craig



--

cfrhoads(at)YAHOO.COM
Guest

Posted: Thu Feb 19, 2009 5:18 pm Post subject: LED LANDING LIGHTS

Craig,

     J.C. Whitney advertised them as LED lights; however, that doesn't mean a whole lot.  How do you tell the difference?

 

__________________________________________________________

Chuck Rhoads

cfrhoads(at)yahoo.com

322 Links Dr.

Simpsonville, KY 40067

(502) 410-1357 



 

   From: craig bastin <craigb(at)onthenet.com.au>

To: europa-list(at)matronics.com

Sent: Thursday, February 19, 2009 6:06:49 AM

Subject: RE: LED LANDING LIGHTS



 DIV { MARGIN:0px;}   are you sure your lights are LED, in theory LED should offer nil EM interference. Maybe HID???

  

 [quote] --

rampil

Joined: 04 May 2007
Posts: 870

Posted: Fri Feb 20, 2009 3:55 am Post subject: Re: LED LANDING LIGHTS

LED  high intensity elements are often pulsed to achieve higher

output within thermal constraints hence RFI

_________________
Ira N224XS

cfrhoads(at)YAHOO.COM
Guest

Posted: Fri Feb 20, 2009 2:03 pm Post subject: LED landing lights

For those that were interested in finding our more information about the LED landing lights from Whitney I will try again to send the web page.

 http://www.jcwhitney.com/autoparts/ProductBrowse?storeId=10101&Pr=p_Product.CATENTRY_ID:2017635&productId=2017635&catalogId=10101

  

 Good luck and if you find the solution for the interference please let me know.

  

 Chuck Rhoads

 A100  N246CR

  



 



           [quote][b]

ami(at)mcfadyean.freeserv
Guest

Posted: Fri Feb 20, 2009 2:08 pm Post subject: LED LANDING LIGHTS

The difference is that a HID light (typcally of  35watts) would drain about 3 amps, not 0.5amp, and burn-off your  retinas!.

  

 Duncan McF.

 [quote]   ---

rparigor(at)suffolk.lib.n
Guest

Posted: Sat Feb 21, 2009 12:36 am Post subject: LED landing lights

Hi ChickI took a look at JC Whitneys LEDs [url=http://www.jcwhitney.com/autoparts/ProductBrowse?storeId=10101&Pr=p_Product.CATENTRY_ID:2017635&productId 17635&catalogId=10101]http://www.jcwhitney.com/autoparts/ProductBrowse?storeId=10101&Pr=p_Product.CATENTRY_ID:2017635&productId 17635&catalogId=10101[/url] They look like the same Fog driving LEDs that Pep Boys sells. Pep Boys sell them for 49.99 for pack of two.I purchesed both the round and rectangle LEDs to fool with and a Kitfox builder wanted the one that looked more suitable, so I am going to return the round and send him the rectangle.I checked the rectangle one tonight and sure enough it makes a lot of noise in a handheld vertex VXA-700. What is making the noise is the regulator that drops battery voltage down to LED voltage. The package I have has a button you can push and run one LED off two button batteries that are supplied in package and radio is dead silent. Anyway you need to find a cleaner way to supply voltage to the LEDs, don't use supplied regulators or clean them up.I will put up a few pics in gallery in near future with.Ron Parigoris   [quote][b]

rparigor(at)suffolk.lib.n
Guest

Posted: Sat Feb 21, 2009 8:19 pm Post subject: LED LANDING LIGHTS

Hi Chuck



I put up some picture and info about Fog LEDs:

http://www.europaowners.org/modules.php?set_albumName=album271&op=modload&name=gallery&file=index&include=view_album.php



Ron Parigoris

Visit -  www.EuropaOwners.org

rparigor(at)suffolk.lib.n
Guest

Posted: Sun Feb 22, 2009 6:22 pm Post subject: LED LANDING LIGHTS

Hi Chuck



We did some more testing on Sunday, the regulator is just a buck switching regulator, no pulse for greater light output. 



Info detailed at:

http://www.europaowners.org/modules.php?set_albumName=album271&op=modload&name=gallery&file=index&include=view_album.php&page=1



Get the hash down and your radio will be happier.



Ron Parigoris

Visit -  www.EuropaOwners.org

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