Electrical contacts

[Proffshuggarn]

bought myself some toys

You deserve it
My wife starts to sigh when I come home with similar nice things.

I then point out that times are changing. The evolution!

In the old days we were expected to come home with a fallen game loaf, today we bring home old electronics and practice a little alchemy, which can generate a little extra income. The evolution
/Dennis

 

[anarxi]

I always try to find a datasheet for a product before destroying it.
You can indirectly judge the contacts by knowing what current they are designed for.
If it is more than 2.5 amperes, then it is most likely silver.

 

[anarxi]

an alloy of 95% gold and 5% nickel on a copper substrate.
in real
"born" about 80 milligrams of 22 carat gold

something like this...

 

[anarxi]

Contact material alloy PLI 10
platinum 90%
iridium 10%


a very wear-resistant and hard alloy, unlike pure platinum...

PS
The standard of the kilogram and meter in the Paris Chamber of Weights and Measures is made from such an alloy.

 

[anarxi]

Echoes of War
contactors from Russian aircraft
900 silver....

 

[anarxi]

I don’t know how it got to central Ukraine,
where they sent it to me,
but it’s quite likely they still remember Elvis alive...

a miracle did not happen;
there is no silver-palladium alloy in them.
Plain gold plated silver -
moving contact
silver on copper - fixed contacts...
I bought it for fun...

 

[Shark]

but it’s quite likely they still remember Elvis alive...

I remember when Elvis was alive.
Does that make me young again?

 

[anarxi]

at auction they were sold as vintage and rarity......

It follows from this that YOU - vintage and rarity......

 

[Proffshuggarn]

I remember when Elvis was alive.
Does that make me young again?

And I've met Johnny Cash (Yes, in Sweden. Not in Jail)

 

[stella polaris]

I remember when Elvis was alive.
Does that make me young again?

The King is Dead!- Long live the Queen!
Forgot the link.. Here is the new Queen





Edit: OOOps. Perhaps not the right thread. Was most probable mind controlled...

 

[anarxi]

Contact material alloy PLI 10
platinum 90%
iridium 10%


a very wear-resistant and hard alloy, unlike pure platinum...

PS
The standard of the kilogram and meter in the Paris Chamber of Weights and Measures is made from such an alloy.

 

[anarxi]

Perhaps the most common Soviet relays:
res 9 and res 10 (relay electrical low current)
Depending on the year and passport number, the contacts are gold, an alloy of platinum and iridium, an alloy of silver and palladium (80/20) and plain silver.

 

[anarxi]

those in the photo have contacts made of a platinum and iridium alloy...
of 3 relays

 

[Reggy]

Next question I got a bunch of these with some relays. Ripped them open and instead of silver contacts low a behold I find wires…sure looks like gold to me any opinions on this?

 

[Reggy]

As well I was thinking of cupelling to purify some contacts. I cleaned some using nitric acid but I keep getting a very fine powder? It does not look like silver nitrate?

 

[Yggdrasil]

Next question I got a bunch of these with some relays. Ripped them open and instead of silver contacts low a behold I find wires…sure looks like gold to me any opinions on this?

Where did it come from?
The origin and its use can give hints on whether Gold is likely or not.

 

[Yggdrasil]

As well I was thinking of cupelling to purify some contacts. I cleaned some using nitric acid but I keep getting a very fine powder? It does not look like silver nitrate?

You cleaned some what?
And dissolved Silver Nitrate is colorless.
To get the Silver from Silver Nitrate simply add Salt.
Have you read Hokes book yet?

Edit to add:
Now I see, you cleaned some contacts.

 

[Yggdrasil]

As well I was thinking of cupelling to purify some contacts. I cleaned some using nitric acid but I keep getting a very fine powder? It does not look like silver nitrate?

Why in the world do you clean metals with Nitric?
What was your reasoning behind this?

Have you read all the links you got in the welcome?

 

[anarxi]

Next question I got a bunch of these with some relays. Ripped them open and instead of silver contacts low a behold I find wires…sure looks like gold to me any opinions on this?

Yes it's a relay.
sealed two-position, single-stable DC relay is designed for switching DC and AC electrical circuits...

Red dot for pin orientation.
the diagram is directly drawn on the body.
At the top, which you dismembered, there is a copper coil and a rocker arm that moves the contacts.
What you call “wires” is the contact group of this device.
take a file or nail file and rub them.
Most likely it is gilded silver.
you will see the white inside.

but in theory it could be a palladium alloy, or even a platinum-irridium alloy, or even a gold-nickel alloy.or maybe nickel silver.
you can do a torch test - take a bite and try to melt a piece....

photograph objects from all sides, this makes it easier to identify the object.
The manufacturer's logo seems to be on the end.
Old thing.
The gilding (at least) is good there.
I saw that such gold-plated parts are made by "quartering"....

 

[Master Nater]

They have a magnet spool that operates the switches.

a relay is nothing more than an electrically operated switch. putting power to the electrical coil is what pulls the contacts closed (or open depending if it's a NO or NC relay), instead of a manual switch. either relays or contacts will have contacts containing PMs in them. the higher the ampacity rating, the larger the contacts. (and the more PMs)