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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: Mmmm ... posted by andyr on December 10, 2008 at 14:28:00:
Picture the scenario: a power supply putting out two rails, two conductors stretching to some finite impedance load. Put all of these items into the shape of a circle and you have just created a great little loop antena. Note that a circle will be the most efficient antenna (bad), but any loop area results in some antenna gain. Twisting in this case is merely a method of reducing antenna loop area. The antena loop in this case is the loop from the power supply rails through the load (amp?) itself. Generally, the more loop area there is the more noise power recieved by this loop. Twisting the wires reduces this loop area to almost nothing ensuring the poorest reception of ambient noise possible.
Just as you don't want noise on your I/O you do not want it in your load (amp?) rail voltages. You can bet that ambient noise fields will not discriminate between antennae intended to be I/O lines vs antennae intended to be power supply rails.
Presumably these rail voltage wires feed something such as an amplifier circuit, no? All amps will have some finite noise rejection capacity, some better than others. Key word here being finite. Any noise that can be removed from amp supply WILL result in a better amp SNR.
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Follow Ups
- RE: Same reason.... - Ugly 11:08:27 12/11/08 (3)
- Thank you, Ugly ... - andyr 11:36:48 12/11/08 (2)
- RE: You're welcome andyr. IIRC I owed you one for my phono inner tube. - Ugly 15:00:48 12/11/08 (1)
- What goes around, comes around! :-)) ... - andyr 19:00:06 12/11/08 (0)
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