[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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