Should I be keeping these?

[Meh1]

Hey thanks for any advice in advance. These all come from old monitors. I read the posts on "dog bone" type capacitors. My thinking is that perhaps these are a bit to modern to contain silver, but I'm just a bit curious. I broke one open and I'm running a couple tests to see if it contains silver. When broken the interior is basically very thin metal sandwiched in mica. There is a small bridge in the center between the leads. But it is exceptionally small for the size. Most of the weight comes from the wrapping. Anyone have any experience with these or tried recovery on any of them? I've been searching with no luck on what they contain. Thanks guys, Regards -John

 

[johnny309]

They are good only as working part....is aluminium and plastic...besides the terminals which are made from copper....

MPP......polypropylene....hope I spell it right.....is the plastic material

 

[trashmasters]

Hi. John

Lazersteve has done a lot of work with this type of Cap. (or they look the same) in the past few years.I think that he did post PM's in them...

 

[Meh1]

Thanks for the fast reply..Thats what my test showed to..zero silver..I put some of the foil into a little nitric..and when I dropped with copper came back negative..But again thanks for the help! Regards -John

 

[johnny309]

Sorry...but not a single PM in them.... :roll:

 

[necromancer]

you may be thing of these, easy to confuse the two
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=58&t=17603&p=178470&hilit=dog+bones#p178242

 

[johnny309]

Sorry...but my eyes look at 20-20... :roll: ....not so easy to make mistake......
Silver mica capacitors are different ...as in shape ,as in colour....

 

[Meh1]

Yeah that would be the post that had me do a double take on my scrap. I was just working through some old monitors and saw those. And I remember from the post that they calculate somewhere in the neighborhood of one pound = one troy ounce of silver..so I thought maybe I was sitting on a silver mine..but into the scrap boards bin they went *sigh*