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Twisted Pairs

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art(at)zemon.name
Guest

Posted: Thu May 05, 2016 6:51 pm Post subject: Twisted Pairs

Folks,



Is there any reason to form the positive and negative power wires for my devices into a twisted pair?

Thanks,

    -- Art Z.



-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

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enginerdy(at)gmail.com
Guest

Posted: Thu May 05, 2016 7:01 pm Post subject: Twisted Pairs

Personally I do that because it keeps the wires very close together, minimizing loop area (which is proportional to magnetic field and susceptibility to magnetic fields) but it’s mostly just a neatness thing.



—Daniel

 	  Quote: 	
		  On May 5, 2016, at 9:49 PM, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:

Folks,

Is there any reason to form the positive and negative power wires for my devices into a twisted pair?



Thanks,

    -- Art Z.

-- http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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nuckolls.bob(at)aeroelect
Guest

Posted: Fri May 06, 2016 4:29 am Post subject: Twisted Pairs

At 09:49 PM 5/5/2016, you wrote:

  	  Quote: 	
		  Folks,



 Is there any reason to form the positive and negative power wires for my devices into a twisted pair? 	


   Never seen it done. If you have a potentially

   vulnerable/antagonistic system signal/power line

   then installation instructions will call out

   special wiring techniques for maintaining

   electromagnetic Nirvana.



   Devices intended for use in electronically

   complex machines will have been evaluated

   for EMC issues as either victims or antagonists.

   It is the designers responsibility to

   fire-wall deleterious at the boundaries

   (connectors and enclosures) of their

   product.



   When we test electro-whizzies out in the RF

   laboratory, interconnecting wires that might

   also offer avenues of ingress/egress for

   RF energy are laid out for MAXIMUM vulnerability.

   When tested under such conditions, the product

   must demonstrate an ability to live harmoniously

   amongst other devices with no special attention

   on the part of the installer.



   Of course certain energy pathways are inherently

   vulnerable or antagonistic . . . those pathways

   will be identified and properly managed by

   shielded wires, coaxial cable or maybe even

   a fiber bundle (glass is already common in

   some home entertainment systems. You can

   replace all the cat-5 cables in your home

   network with glass right now see

    http://tinyurl.com/zt8hqgb )



   But I don't see it coming to the panel of any

   small airplanes soon . . . it's simply

   too easy and less complex to run a few shielded

   wires between cooperating black boxes . . .

   and the instructions will tell you how to do

   it.  



 

   Bob . . .

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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nuckolls.bob(at)aeroelect
Guest

Posted: Fri May 06, 2016 5:00 am Post subject: Twisted Pairs

At 09:49 PM 5/5/2016, you wrote:

  	  Quote: 	
		  Folks,



 Is there any reason to form the positive and negative power wires for my devices into a twisted pair? 	


   Never seen it done. If you have a potentially

   vulnerable/antagonistic system signal/power line

   then installation instructions will call out

   special wiring techniques for maintaining

   electromagnetic Nirvana.



   Devices intended for use in electronically

   complex machines will have been evaluated

   for EMC issues as either victims or antagonists.

   It is the designers responsibility to

   fire-wall deleterious at the boundaries

   (connectors and enclosures) of their

   product.



   When we test electro-whizzies out in the RF

   laboratory, interconnecting wires that might

   also offer avenues of ingress/egress for

   RF energy are laid out for MAXIMUM vulnerability.

   When tested under such conditions, the product

   must demonstrate an ability to live harmoniously

   amongst other devices with no special attention

   on the part of the installer.



   Of course certain energy pathways are inherently

   vulnerable or antagonistic . . . those pathways

   will be identified and properly managed by

   shielded wires, coaxial cable or maybe even

   a fiber bundle (glass is already common in

   some home entertainment systems. You can

   replace all the cat-5 cables in your home

   network with glass right now see

    http://tinyurl.com/zt8hqgb )



   But I don't see it coming to the panel of any

   small airplanes soon . . . it's simply

   too easy and less complex to run a few shielded

   wires between cooperating black boxes . . .

   and the instructions will tell you how to do

   it.  



 

   Bob . . .

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

art(at)zemon.name
Guest

Posted: Fri May 06, 2016 5:37 am Post subject: Twisted Pairs

On Fri, May 6, 2016 at 7:27 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    At 09:49 PM 5/5/2016, you wrote:

  	  Quote: 	
		  Folks,



 Is there any reason to form the positive and negative power wires for my devices into a twisted pair? 	


   Never seen it done. If you have a potentially

   vulnerable/antagonistic system signal/power line

   then installation instructions will call out

   special wiring techniques for maintaining

   electromagnetic Nirvana.



   Devices intended for use in electronically

   complex machines will have been evaluated

   for EMC issues as either victims or antagonists.

   It is the designers responsibility to

   fire-wall deleterious at the boundaries

   (connectors and enclosures) of their

   product.



   When we test electro-whizzies out in the RF

   laboratory, interconnecting wires that might

   also offer avenues of ingress/egress for

   RF energy are laid out for MAXIMUM vulnerability.

   When tested under such conditions, the product

   must demonstrate an ability to live harmoniously

   amongst other devices with no special attention

   on the part of the installer.



	




Very interesting! Thanks for explaining.

 

 	  Quote: 	
		  

  You can

   replace all the cat-5 cables in your home

   network with glass right now see

    http://tinyurl.com/zt8hqgb )



	




Neat device but I probably won't... I'm lazy and replacing well functioning CAT-5 infrastructure is gonna happen right after I get around to dusting my stereo wires and changing my turn signal fluid.. 



Cheers,

    -- Art Z.



-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

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