[Coco] [off-topic] cabling problems

[Steven Hirsch]

On Thu, 19 Apr 2012, Patrick Wilson wrote:


>

>

>

> From: William Astle <lost at l-w.ca>

> To: coco at maltedmedia.com

> Sent: Wednesday, April 18, 2012 5:48 PM

> Subject: Re: [Coco] [off-topic] cabling problems

>

>> I thought the twisted part was to keep the transmission line effect

>> going  and to keep the wires together rather than shielding. The

>

> Actually, the function of the twist is to provide a means for 

> cancellation of spurious interferance.  The more twists per a given 

> length, the better.  It uses the effects of the magnetic fields created 

> by current flow to couple back in such a way that it counters the 

> spurious waveform.   Th


Common-mode rejection


> e twist also has another interesting effect in 

> that the inductive effect of the signals traversing the medium give the 

> cable its effective impedance.  (electrical trivia, enjoy)




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