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10-17-2008, 12:31 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by Boxcars
To make sure I understand: just one driver/filter unit to run LEDs in both wingtips?
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While you could do this, you would have very long LED side power leads and this may cause other noise issues.
The suggestion is put a driver/filter in each wingtip and keep the LED side leads as short as possible.
Also, these drivers output a fixed amount of constant current. Depending on how many parallel runs of LED's you have, it will change what current your driving them at.
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10-26-2009, 01:29 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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For those that are using or planning to use homebrew LED lighting....I can now confirm that Bob's LED Driver noise filters actually work in the application they were designed for.
I finally got my wingtips and lights installed and working and they have no affect on the radio or intercom.
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10-26-2009, 02:28 PM
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Join Date: Jan 2005
Location: Peoria, AZ
Posts: 1,053
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Hi Brian,
Can you post some pictures of your installation?
__________________
Regards,
Thomas Velvick
Goodyear, AZ (KGYR)
2020 Donation sent.
N53KT RV-6a finished 2018, Flying
N7053L RV-4 Wife's RV
N56KT RV-4 Finishing
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10-26-2009, 02:41 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by rvator51
Hi Brian,
Can you post some pictures of your installation?
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Tons of info here and on other threads...I forgot my camera at the hangar so no pics of them on the aircraft yet.
http://www.vansairforce.com/communit...data+point+led
I mounted the LED drivers/filters right to the tip rib using the post provided by Bob. Bob's driver/filter has a 9 pin Dshell connector for its wiring. Rat Shack 2 pin connector between that and the LED units.
Info on the driver/filter:
https://matronics.com/aeroelectric/C.../9051-700A.pdf
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10-26-2009, 04:32 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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Another Option......
I have been using one of these units in my wingtip for 200 hrs now to drive a P7 taxi light with no noise on the radio. No idea if it would be noisy closer to the cockpit. The price is right. They come in 350, 500, 700, 1000, and 1400ma. $9.95 each.
Yes they ship from Turkey! They take about 20 days to arrive. The people there have been great to deal with.
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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10-26-2009, 04:46 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Pete,
Where were you when we were working thru trying to make these state side drivers quiet!
That thing looks to have similar filtering built in....These off the self drivers here in the states do not have any filtering included thus Bob and I came up with our own....
Is that price correct?
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10-26-2009, 05:37 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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yep $10
Brian,
They were a product of some extreme googling......
I did not post b/c I wanted to make sure they worked and were quiet. After 200 hrs I feel pretty good about them. I just took delivery of some 1400ma drivers at 9.95 each. They nicked me for 9.95 Intl Shipping, but they seem to work just fine!
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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11-12-2009, 10:31 AM
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Join Date: Mar 2005
Location: Elkhart, Indiana
Posts: 1,186
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I replaced the incandescent bulbs in my Whelen wingtip nav lights with plug-in LED units from Aircraft Spruce. They look great!
However, when I turned them on for the first time while flying the other day, I heard the squelch on my radio go off. After troubleshooting a few times, I decided that it's indeed in my radio and not the audio panel.
I removed the LED bulbs and the noise stopped. Put the incandescents back in and all's quiet.
Is this the noise you guys are talking about? Is the solution to install a couple of filters in the wingtip units, even if I'm not making my own LED bulbs?
__________________
Don McNamara
Peoria, AZ
Builder: RV-8 "Smokey"
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11-12-2009, 10:43 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Depends,
If they are passive devices (no active electronics) then they should not be your source of noise.
If they have an active driver module built into them, then they very well may be a huge source for noise unless they have built in filtering.
Plain old LED's without active drivers will not make any noise.
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