5mm radius is common. Not that it makes much of a difference in this case.
Magura 🙂
Yep, not uncommon in my hydro transfer switches and transmitters. My question is far simpler than that though: what does this patent claim to address? The author appears to say it's the reliability of very small gauge wire. The buss bars on the output of our half megawatt generator might not care but Litz built up from 45 gauge might. I honestly don't know at what scale they claim it's an issue. Internal IC wiring?
Great. So if I have 10 feet of plain Jane 24 gauge copper wire, it'll have a resistance of about 257 milliohms. Theirs would have a resistance of about 283 milliohms.
Well, I'll just get some plain Jane 25 gauge and get down to 204 milliohms. 😀
se
Yes, you can learn to hear. 😉 First thing I tried on hearing the effect was to monitor the demo with a software spectrum analyzer but it doesn't see my USB speakers. At least grant me points for effort.
But my point being, that the bus bars does not break, when bent, and the scale of the events, is diminishing as the diameter of the wire goes down.
If it's not an issue to the bus bars, then why should it be an issue to 45 gauge?
45 gauge wire, is around 0.05mm, which is manufactured on daily basis.
If you look at the wire manufacturers spec sheets, you see no de-rating of the thinner wire gauges. All have the same current capability per mm2.
Magura 🙂
EDIT: exactly my point Steve.
Sorry to ask again 🙂 but will this test be this year 😉
otherwise you may have to figure ageing and "half lifes... all the folk on this thread" into the final results...
otherwise you may have to figure ageing and "half lifes... all the folk on this thread" into the final results...
And they even manage to make it with plain ol' ETP copper. Doesn't even require anything more exotic like OFHC.
se
Its only that I would not use such sharp bends on high current but what do I know.
So the sharp radius bends on the bussbars in the substation I was in today are causing issues? Maybe that's why, when one of our staff stood under one of these bends they suddenly exclaimed "Oh, my god, it feels like I'm in a sunshower" because of the electrons unable to take the tight radius and flooding to the ground, like a little rain of energy.
Not much obviously.
Obviously more than you, go read your grade one electricity notes and see what happen when high current flow through a short bend. Strange that is the first point that will fail in a short.
Due to the smaller cross section, yes.
.....thus they're dimensioned accordingly.
Magura 🙂
EDIT: fixed typo's
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I am already an EE, and the protection systems will operate during a fault. You think any of this is new? It is well known and basic electrical design. Funny that these installations, and we have many of them, function well under all sorts of load conditions including continuous high current draw and survive and function for decades.
I am yet to see any evidence from YOU, beyond hand waving assertion, that tight radius bends have any effect in an audio system, beyond the small difference in R. And I am not discussing fault conditions, but normal operation.
Yes, these are considered, and accounted for during the design stage as sometimes tight radius bends are needed to connect components together and make it a practical functioning installation.
The critical thing (to the extent that it's critical) is not the bend radius, it's the ratio of the bend radius to the diameter.
But, yes, all handwaving from a couple of guys with no evidence, no knowledge of metallurgy, one of whom has no knowledge of basic electricity, and the other of whom admits that he can't tell the difference between wires without peeking but is happy to argue the point anyway.
So, seriously, why does anyone bother to argue?
But, yes, all handwaving from a couple of guys with no evidence, no knowledge of metallurgy, one of whom has no knowledge of basic electricity, and the other of whom admits that he can't tell the difference between wires without peeking but is happy to argue the point anyway.
So, seriously, why does anyone bother to argue?
Member
Joined 2004
Hello all.
From my experiences with diy cables I believe it´s the dielectrics that burn in, not metals.
There´s something about PTFE, either solid or foamed, and PVC that adds noticeable (to me anyway) colourations to the sound on the first auditions after the cables are assembled. And such effects seem to go away just after a few hours of use, not days or weeks as usually stated.
I´m aware it could be my imagination, hence the bold and my interest in this test.
For lack of a better description, Teflon sounds initially "greasy" and PVC sounds "smoky".
Other materials such as PE and PP don´t seem to add so much immediately distinct colourations, which is odd since you´d expect such effects to be gradual throughout the Dielectric Constant scale...
I have experienced this mainly in arrangements where the insulated wires are close to each other such as in paralel or twisted pairs. In other geometries, the more air that gets between the conductors, the less initial colourations are noticeable, and arguably the less burn-in time required...
Maybe the best configuration to definitely check for burned-in metals would be running straight wires from plug to plug, well away from each other? Although removing the solid dielectrics out of the equation I reckon I wouldn´t detect any difference between the burned-in cable and the other.
From my experiences with diy cables I believe it´s the dielectrics that burn in, not metals.
There´s something about PTFE, either solid or foamed, and PVC that adds noticeable (to me anyway) colourations to the sound on the first auditions after the cables are assembled. And such effects seem to go away just after a few hours of use, not days or weeks as usually stated.
I´m aware it could be my imagination, hence the bold and my interest in this test.
For lack of a better description, Teflon sounds initially "greasy" and PVC sounds "smoky".
Other materials such as PE and PP don´t seem to add so much immediately distinct colourations, which is odd since you´d expect such effects to be gradual throughout the Dielectric Constant scale...
I have experienced this mainly in arrangements where the insulated wires are close to each other such as in paralel or twisted pairs. In other geometries, the more air that gets between the conductors, the less initial colourations are noticeable, and arguably the less burn-in time required...
Maybe the best configuration to definitely check for burned-in metals would be running straight wires from plug to plug, well away from each other? Although removing the solid dielectrics out of the equation I reckon I wouldn´t detect any difference between the burned-in cable and the other.
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