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Copper RCA connector
Copper RCA connector
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Old 2nd September 2019, 05:50 PM   #11
Mark Tillotson is offline Mark Tillotson
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Quote:
Originally Posted by DF96 View Post
Yes, copper is too soft and so will make a poor connector. I am going to guess that OFC copper will be particularly soft and so particularly useless for this application. It is unlikely that you will be able to buy such an item, as nobody should be daft enough to make one.

I can see two ground lugs on those connectors.
You can work-harden copper. Makes a huge difference to its properties (of course there is absolutely no point using oxygen free copper, work-hardened metals have higher resistivity anyway). Typically copper alloys are used for machined parts, not pure copper, such as tellurium copper and beryllium copper (used for spring contacts).

The ground lugs are machined flat to be soldered directly onto a PCB I think (like SMA connectors). Alas a solid copper connector is going to be impossible to solder without a large powerful iron - the plastic gaskets should be removed before soldering of course.
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Old 2nd September 2019, 05:55 PM   #12
Mark Tillotson is offline Mark Tillotson
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As I understand it, adding tellurium to copper will
1. make it more radioactive - but not dangerously so
Almost immeasurably so - many orders of magnitude less radioactive than bananas for instance.
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Old 2nd September 2019, 07:06 PM   #13
JMFahey is offline JMFahey  Argentina
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Has anybody made RCA connectors out of bananas?
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Old 2nd September 2019, 07:28 PM   #14
Galu is offline Galu  Scotland
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"The radiation exposure from consuming one banana is approximately 1% of the average daily exposure to radiation."

Sorry, I just had to check on Wikipedia!
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Old 3rd September 2019, 04:33 PM   #15
DF96 is offline DF96  England
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People have made and tested interconnects made out of banana. They were almost indistinguishable from copper.
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Old 3rd September 2019, 05:04 PM   #16
zalive is offline zalive
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Well at least we heard some use bananas on speaker cables...
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Old 3rd September 2019, 05:17 PM   #17
JMFahey is offline JMFahey  Argentina
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Weapons are currently made out of iron/steel, but we must remember our History: they were earlier made out of Bronze (hint: Bronze Age) or even ***COPPER***
By the way, these are Chinese copper swords.
If they make swords out of copper, why wouldn´t they make simple RCA connectors?

Click the image to open in full size.

Earlier ones from stone or wood, but maybe at a primeval age we made them out of Bananas, why not?

So learning to defend against them can save your life someday.

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Last edited by JMFahey; 3rd September 2019 at 05:46 PM.
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Old 4th September 2019, 10:01 AM   #18
DF96 is offline DF96  England
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Early copper would have contained lots of impurities so would have been stronger than modern copper.

There is no good reason to make an RCA connector out of copper. There are good reasons for making wire out of copper. People should not confuse these two quite different applications of conductors.
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Old 4th September 2019, 11:19 AM   #19
davidsrsb is offline davidsrsb  Malaysia
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In the copper age, there was no attempt to refine the metal, so it would probably have been mixed with arsenic naturally, which is a much harder alloy
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