Can anyone explain why Accuphase (P100 Amp) connects neutral phase to power transformer via a rectifier (SEEMS TO BE) bridge with plus and minus out shorted and ac terminals across neutral and transformer bypassed by a 10 Ohm resistor? This raises the input impedance and creates a 0.8 V rms tophat shaped voltage drop across the mains terminals. Puzzles me!
I intend to take this out when I am able to understand why this arragement is used.
I intend to take this out when I am able to understand why this arragement is used.
Here in the US, neutral is a term that refers to the grounded side of a 120VAC line. I believe that you're using 220VAC over there. 220V here is two lives and a ground (no 'neutral' per se), so I'm not clear as to what you're referring to when you say neutral. In other words, we may have a bit of a terminology problem here.
Is there any chance that you can post a schematic?
Grey
Is there any chance that you can post a schematic?
Grey
Fmak
I don't have a CLUE of what's going on with your Accuphase (that wouldn't be the first time). I need a schematic too.
Grey,
in Europe the tri-phase is three conductors at 380V so the phase-neutral is 380/sqrt(3)=220V.
So it's the same deal over there like you have here, just a little different.
I don't have a CLUE of what's going on with your Accuphase (that wouldn't be the first time). I need a schematic too.
Grey,
in Europe the tri-phase is three conductors at 380V so the phase-neutral is 380/sqrt(3)=220V.
So it's the same deal over there like you have here, just a little different.
Fmak,
It looks like an earth loop breaker. You can find more about that circuit on Elliot Sound Product's web page:\
http://sound.au.com/earthing.htm (Figure 3)
BTW, the whole site is packed with excellent stuff!!
It looks like an earth loop breaker. You can find more about that circuit on Elliot Sound Product's web page:\
http://sound.au.com/earthing.htm (Figure 3)
BTW, the whole site is packed with excellent stuff!!
fmak,
If what you've got is what's shown on the ESP site, I'd say it's safe to remove it. I'd say to bypass it first. If you develop a ground loop, then hook it back in. Otherwise, go for it.
Incidentally, I'd be curious to know if you notice a sound quality difference with/without it...
Grey
If what you've got is what's shown on the ESP site, I'd say it's safe to remove it. I'd say to bypass it first. If you develop a ground loop, then hook it back in. Otherwise, go for it.
Incidentally, I'd be curious to know if you notice a sound quality difference with/without it...
Grey
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