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noise filter Hijack

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Mar 27, 2019 5:46 pm Post subject: noise filter Hijack

 	  Quote: 	
		  

 Would this be appropriate to address the problem in



 Post subject: Eye Beam Mini LED / RF interference

 Posted: Fri Feb 22, 2013 10:38 am



 The problem persists.



 Read this topic online here:



  http://forums.matronics.com/viewtopic.php?p=488268#488268 	
 



   Some sort of treatment to the

   light fixture's power leads would

   be worth trying. The suggested

   components are cheap but minimums

   and shipping charges would make

   a single filter pretty pricey.



   I'm getting ready to place an order

   with Digikey . . . I can add the

   parts to craft a filter to try.



   How much current does the fixture

   draw? I can add the parts to my

   order and ship you an assembled

   filter.



 

 

   Bob . . .

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jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Thu Mar 28, 2019 9:50 am Post subject: Re: noise filter Hijack

Bob, you are too kind. Thank you for your offer and I acceptjavascript:emoticon('') . And I'm happy to cover any expense on my behalf.



Eyebeam Mini Specs are here: http://www.aveoengineering.com/eyebeam-mini/



Aveo EMI Filters: https://tinyurl.com/y3epopac



Aveo suggested remedy: Attached

They also suggested multiple loops around the ferrite cores. Haven't tried that yet.



Original request to Aveo:



Request:

Technical help please. I have installed an EyeBeam mini in my composite airframe. The shielded, twisted pair power and ground wire cable parallel unshielded, untwisted wires to the cabin speaker for a distance of about 5' . At that point the cabin speaker pair becomes a twisted and shielded cable. The two cables parallel each other for an addittional 12'. The shield for the speaker is grounded at the audio panel and the shield for the EB is grounded at the ship's single point ground bus. The problem: When I key the microphone, the EB turns on. If I key it again, the EB begins flashing uncontrollably. It is unresponsive to the dimming control and the on/off switch. The only way to stop the flashing is to disconnect the EB from power. The EB works fine when connected to battery power independent of the ship's electrical system. Attempts at a solution: Thinking that the the magnetic field of the speaker magnet may causing the problem, the speaker was disconnected and the mic was keyed. The EB exhibited the same uncontrollable flashing upon keying the microphone. I recognize that the problem does not lie with the EB. But I'm hoping that your design engineers, knowing what the EB's vulnerabilities are, can look at this and determine how to remedy it. Thank you, John Burnaby

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Aveo Engineering suggested fix for EyeBeam Mini.pdf

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Aveo Engineering suggested fix for EyeBeam Mini.pdf

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Mar 28, 2019 3:07 pm Post subject: noise filter Hijack

At 12:50 PM 3/28/2019, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "jonlaury" <jonlaury(at)impulse.net>



 Bob, you are too kind. Thank you for your offer and I acceptjavascript:emoticon('') . And I'm happy to cover any expense on my behalf.



 Eyebeam Mini Specs are here:  http://www.aveoengineering.com/eyebeam-mini/ 	


   found a better manual that called out

   0.2A at full bright on 12v . . . 



 

  	  Quote: 	
		  Aveo EMI Filters:  https://tinyurl.com/y3epopac 	


   These are wAAaayyyy to beefy . . , but

   they might work. What I'm going to send

   you is much smaller.



 

   Bob . . .

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