Today's Message Index:
----------------------
1. 05:29 AM - Re: Twisted Pairs (Robert L. Nuckolls, III)
2. 06:00 AM - Re: Twisted Pairs (Robert L. Nuckolls, III)
3. 06:37 AM - Re: Twisted Pairs (Art Zemon)
Message 1
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| Subject: | Re: Twisted Pairs |
At 09:49 PM 5/5/2016, you wrote:
>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 . . .
Message 2
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| Subject: | Re: Twisted Pairs |
At 09:49 PM 5/5/2016, you wrote:
>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 . . .
Message 3
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| Subject: | Re: Twisted Pairs |
On Fri, May 6, 2016 at 7:27 AM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 09:49 PM 5/5/2016, you wrote:
>
> 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.
>
> 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/ <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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