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In Reply to: RE: Al never published this posted by bartc on April 10, 2015 at 06:01:17
The circuit that Al devised or spoke of was a referred to as a " Anti Parallel Diode" set up where two rectifier bridges were placed back to back to create a one way gate ...
Any fault or short in the component would pass through the one way bridge to and down the safety wire to the ground rod
Any ground transients or RF coupled to the safety wire trying to invade your component through the component's safety ground system would be blocked by the bridge's one way action
There is a safe path to ground and a gate keeper at the entrance to block or suppress noise ...
Search General and Tweaks for ... "anti parallel diodes" for Al's actual posts and comments
Apparently Bryston feels this is a big enough problem that they are addressing this issue by installing just the same circuit in some of their amps
See the attached photo and look at the Bryston amp schematic on the top ... follow the ground off the IEC and it sure looks like what Al was describing
Also note Bryston seems to have a concern for DC off set ... follow the neutral off the IEC to a circuit that looks like the circuitry used in a typical Hum Busters
For more info on the ground noise issue ... goggle ... Ground Transient Blocker or Suppressors ... these are pricey but UL approve I think
Follow Ups:
Any fault or short in the component would pass through the one way bridge to and down the safety wire to the ground rod.
Just to be clear the way the circuit works has nothing to do with the ground rod there in mother Earth. The circuit reference/relationship is with the main service neutral conductor, the Grounded Conductor, and the service Hot conductor, Ungrounded Conductor. Again Mother Earth has nothing to do with the way or the how the circuit works.
if yes a difference in sound with bgt?
interesting links:
http://www.coreaudiotechnology.com/audio-system-grounding-and-misconceptions/
http://www.coreaudiotechnology.com/what-is-signal-path-really/http:
//www.coreaudiotechnology.com/what-happens-during-break-in-our-theory/
Spintronic (also used for computers) is the name of the technic used by core audio:
"Spintronics is the principal whereby a very high power magnetic field is applied to a changing electrical field. Electrons are normally moving randomly, vibrating and bumping into each other. By applying a magnetic field to these electrons with enough power the movement of these electrons is aligned and the magnetic fields produced by their eratic movement are eliminated. This dramatically reduces noise and improves power delivery."
This is one of several forms Al showed me.
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