Twisted pair

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources; for instance, electromagnetic radiation from unshielded twisted pair (UTP) cables, and crosstalk between neighboring pairs. It was invented by Alexander Graham Bell.

Explanation

In balanced pair operation, the two wires carry equal and opposite signals and the destination detects the difference between the two. This is known as differential mode transmission. Noise sources introduce signals into the wires by coupling of electric or magnetic fields and tend to couple to both wires equally. The noise thus produces a common-mode signal which is canceled at the receiver when the difference signal is taken.

This method starts to fail when the noise source is close to the signal wires; the closer wire will couple with the noise more strongly and the common-mode rejection of the receiver will fail to eliminate it. This problem is especially apparent in telecommunication cables where pairs in the same cable lie next to each other for many miles. One pair can induce crosstalk in another and it is additive along the length of the cable. Twisting the pairs counters this effect as on each half twist the wire nearest to the noise-source is exchanged.

Podcasts:

PLAYLIST TIME:

My Sweet Senorita

by: Treble & Bass

Intro:
(Girl) 2 x heavy breathing
(Lead) Hah hah (girl) R-r-r-ah
(Lead) Hah hah (girl) 2 x heavy breathing
(Lead) Hah hah (girl) R-r-r-ah
Listen
1. Verse
Girls, they come they go just like money
Yo, the search for love ev'ry night just ain't funny
Hanging at the club drinking the same old margarita
What I see through the crowd is this sweet bonita
Her glittering brown eyes meet mine and it said click
Went to my casa real quick
Here we go
Chorus:
(Girl) R-r-r-ah (lead) My, my sweet senorita
(Girl) R-r-r-ah (lead) My, my sweet senorita
2. Verse
I wake up, it's a new day, I smile, I feel alright
We did the wild thing, a rendezvous all night
I get up with the sun in my face, I look around
Guess what, my senorita left me without a sound
Life's a bitch, and all I find is this note, saying:
(Girl) "Hasta la vista, baby"
(Lead) yeah, that's all she wrote
Now I'm angry, and I think to myself; why, why, shit
Didn't even stay to say goodbye
Here we go
Chorus:
(Girl) R-r-r-ah (lead) My, my sweet senorita
(Girl) R-r-r-ah (lead) My, my sweet senorita
Break:
Break it on down
Yeah, yeah, yeah, you know what I'm saying
That's the way love goes, c'est la vie
Yo, you gotta get a grib, man
Don't let yourself be fooled
Let your own emotions rule
Yo, change the groove
And you don't stop, keep on, keep on
And you don't stop, keep on, keep on
Yo, bring it back
Here we go
Chorus:
(Girl) R-r-r-ah (lead) My, my sweet senorita
(Girl) R-r-r-ah (lead) My, my sweet senorita
3. Verse
I search, and I search, but she's nowhere to be found
I'm all alone, there goes my dream of love on solid ground
Yo, time after time, and rhyme after rhyme
She's just a memory, somewhere in the corner of my mind.
I bet she's out there looking for another one to please her
See, I don't care, she's just another sqeezer?
Here we go
Chorus:
(Girl) R-r-r-ah (lead) My, my sweet senorita (lead) talk about
(Girl) R-r-r-ah (lead) My, my sweet senorita
Outtro:
(Girl) 2 x heavy breathing
(Lead) Hah hah (girl) R-r-r-ah
(Lead) Hah hah (girl) 2 x heavy breathing
(Lead) Hah hah (girl) R-r-r-ah
(Repeat until fade)




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