mbrooke
Batteries Included
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- United States
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- Technician
Does anyone have that old Mike Holt graphic of a balanced power system? I had it on my hard drive but can't find it.
There was a specific graphic I have in mind. Even a special receptacle I think. Google images no longer has the industry in mind.
He posted it in the Jenn-air plug thread.Are you going to post it so we can see too?
But how does it supposedly work in limiting audio noise?
Are you going to post it so we can see too?
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Makes the power cords & distribution behave more like a balanced line. Or that's the theory I've read about it.
Yes the theory was that it would act like a balanced signal interconnect system. But in an AC power system from a noise/leakage voltage/current point of view, the power transformer in an audio component is asymmetrical (mostly due to capacitance differences of the windings), so the noise voltages don't cancel out nearly as well as the proponents would have you believe. Much of the benefit comes from the it acting as an isolation transformer wired as a Separately Derived System.Makes the power cords & distribution behave more like a balanced line. Or that's the theory I've read about it.
I think some of the benefit comes from not having any neutral current flowing on ground wires and creating different voltages at different places on the "same" grounding system.
I realize that the same benefit could be derived from not installing wiring errors, but we're talking about the real world here. Any wiring error that puts return current onto the green grounding wire is going to be immediately obvious when the return wire is 60 volts above ground. Not so when the white return wire is a grounded conductor and it's only a volt or two above ground.
I suspect that isolated-ground systems sometimes reduce noise for the same reason.
So long as a "neutral" wire isn't used, yes.