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In Reply to: RE: Viborg Cable and Termination-Some Info & a Question posted by Mel on February 10, 2021 at 09:16:15
Never used the Viborg branded cable. For cables I would prefer to buy from 'known and reputable' sellers as there are a very large amount of fakes out there.
However I did buy a pair of Viborg connectors from Amazon - the rhodium plated version. Compared to the Furutech and Wattgate ones I have they appear to be fine. Made a power cord using Furutech cable w/out issues. Plugging into outlet and equipment was 'sufficiently' tight. Material-wise you get what you pay for - the housing and other hardware, while fine, is not as hefty as pricier brands. Those housings themselves are a bit smaller than say my Furutech ones. The housing in metal or carbon fiber/etc. are just for looks.
As for bare copper vs. rhodium or gold plating - the gold or rhodium are only for anti-oxidation, anti-tarnish properties. Conductivity wise copper is a much better conductor, only to be bettered by silver (but silver oxidizes very quickly/readily w/out additional coating). Metal oxides are poorer conductors compared to the base metal. However the plated rhodium or gold is very thin and does not impede current.
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Thanks for your post.
One Viborg advantage is that they are not a sufficiently successful commercial brand that they are likely to be counterfeit.
GD Parts is a reputable Chinese seller. Aluminum, stainless steel, carbon fiber shells are not just for looks. Metal platings are not just for anti-oxidation purposes, they also make a big impact on the sound, with different metals sounding distinctly different. The notion that minor oxidation of copper greatly affecting energy transfer for an AC delivery application is unfounded, with a typical bare brass AC outlet or bare brass AC plug showing a great amount of oxidation produced over the years not being an issue to contend with.
I don't know about 'energy transfer' but one this is certain about copper.
Copper Oxide was once used for to make Diodes. The 'Stack' type, you may have seen.
Too much is never enough
No need for the snarky semi-quotes about energy transfer. What do you think the function of a connector interface is? If you live in an older home with decades old AC outlets, I reckon you don't worry about your morning coffee not brewing quickly enough due to a contractors grade AC outlet with years of oxidation of the bare brass electrical contacts, 'pictureguy'.
Not meant to be snarky but a comment on the use of pure copper in certain electrical applications.
If you Do use Copper, care must be taken to keep oxidation to a minimum.....I don't know how fast the 'native oxide' grows or to what depth.....but I don't think it is long-term good news.
I've had copper turn Green with age, even in an insulating jacket. Cheap lamp cord.
I worked for a manufacturer of rectifiers and 'other' semiconductor devices and part of my investigations into former products led me down the Selinium / Copper Oxide path.
Do you WANT me to be snarky?
Too much is never enough
I'm not going to debate the topic of signal and other low-level circuits being affected by copper oxide, the subject is AC energy transfer via bare copper contacts, as well as high-current DC applications that use unplated copper connectors. Snarky comments will get you nowhere in AA.
We used Nickel Plated lugs....similar but plated....to the ones in your image. they were for #10 wire and used on the heater block of a diffusion pump.....Pure HEAT. And they'd cook....
Why do you insist on 'snarky'? I insulted nobody and what I said in my first post was pure fact.
But if you want ot add Low Current / Voltage to the list? I'd be reluctant to use pure copper in a Phono circuit. 5mv or so perhpas less? that' might make a difference with copper oxide. And you must agree that it's a PIA keeping clean. Can you Coat it with somehting which both prevents oxidation AND doesnt' interfere with conduction?
Too much is never enough
I have a pure copper Furutech AC plug that is many years old that shows signs of substantial oxidization, I've never cleaned the contacts, and it still sounds very good. You want me to agree with you rather than allow my point of view. I will continue to advocate the use of unplated copper AC connectors, and don't require any guidance regarding AC connectors, a topic I'm quite experienced with.
NO, Not at all. If I agree or NOT? If you are happy with your Furutech, who the heck am I to argue?
And I'm NOT aruguing. I'd never try to pry your good, working outlet from your hands! Why would I do that?
Where in heavens name did I say your view was 'invalid'??? I just want the facts of copper out there. It oxidizes like craxy and I don't know if you can stop it. MANY hate or won't use a plating like Rhodium for 'sound'' reasons.
Low maintainers like ME are well served staying away from Copper in certain applications.
Enjoy your system....you've worked hard, obviously, to get to a 'happy place'.....
I'm a photo bug. I go to what some would consider extremes for good photos. Location? Time? Post Processing? Printing? $$$ Gear? But most are happy taking their memory card to the local WalMart and 'print 'em up, please!' Care to join me sometime on top of Calavera for a sunrise shot? Hiking in the dark up a slippery slope is FUN....especially toting a bunch of camera stuff. And Breakfast!
But be aware that copper DOES aggressively oxidize and may eventually have a problem. Exercising such connections periodically goes a LONG way to keeping them 'fresh'..... I do a 'teardown' annually and go thru a bunch of dioxit.....And have a blackened cloth with 'residue' when I'm done.
Example, if I may? Silicon, the lifebblood of modern electronics will SELF OXIDIZE in a Very Short time. Like a half hour or so, in open air. That's why storage boxes are plumbed for Nitrogen or some other gas......Argon would work but is $$$ and perhaps an asphyxiant? But Silicon only oxidizes to a depth of 20 Angstroms or so. Steel will generally oxidze (Rust) ALL the way thru except for special Self-Passivating alloys like Core-10. I have a couple Core-10 wind chimes which look awful.....but are 20 years old and Coated with ruse.....
With Silicon? A quick dip in a Hydrofluoric solution strips the 'native oxide' back to bare silicon. The surface goes hydrophobic.
Too much is never enough
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