[Boatanchors] micamold caps

[Jacques Fortin]

Test them !
If they leak, they are not mica types.
Despite I already caught real mica caps that were leaking, but it is another
story...
73, VE2JFE

-----Message d'origine-----
De : Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] De la part de
Adam Vaughn
Envoyé : 21 mars 2016 21:09
À : ranchorobbo at gmail.com; boatanchors at mailman.qth.net
Objet : Re: [Boatanchors] micamold caps

>From what I understand, MicaMold made both real mica caps, and paper caps
(as well as resistors!) in similar packaging. I think the paper types are
generally wider than the real micas, which are usually 'postage
stamp'-shaped (though some are rectangular, but fairly small - they will
have six dots like the square micas, not four or five like the paper types).
Here are some pictures of paper-type MicaMold capacitors:


http://antiqueradio.org/art/Midwest18-3630.jpg
http://antiqueradio.org/art/MicamoldCapacitor.jpg


And some actual MicaMold mica capacitors:
http://edsgoodstuff.com/edscart/bmz_cache/6/6764f610ddbe356e2777f89397a1992d
.image.500x375.jpg
(note the rectangular one in the bottom row - I believe it to be mica)


More on identifying and replacing different types of capacitors: 
http://antiqueradio.org/recap.htm


Good luck!
 -Adam

 
--
Adam Vaughn
Collector of old computers, video game systems, radios and other electronic
equipment... 
Visit my page at http://www.electronixandmore.com/adam/index.html
 
On 03/21/16, Rob Atkinson<ranchorobbo at gmail.com> wrote:
 
I am certain I have read or heard here and there over the years that
"Micamold" branded caps, are fake micas, actually paper dielectric caps in a
molded case made to look like genuine postage stamp micas.

Well, tonight I took a bad one I had pulled out of a rig and busted it apart
with a hammer, only to find what certainly appeared to be thin strips of
mica layered on top of each other and sandwiched into metal grips, one on
each end of the cap case and soldered to wire leads.
So, I don't know how anyone got the idea that these are not real mica caps
because the "micamold" that I broke apart certainly appeared to be the real
deal.

73

Rob
K5UJ
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