18 Dec
2011
18 Dec
'11
2:47 p.m.
Tony Duell wrote:
Don't know really.
There where two Elko Caps manufacturers in eastern germany, one in Gera
(Company was named Koweg = Kondensatorenwerk Gera) and the other was
Frolyt (Freiberger Elektrolytkondensatoren) in my Hometown Freiberg.
(The city with the first mining academy of the world, and the cithy where
the Linux Penguin Plushy came from, try to translate this:
http://www.freibergnet.de/linux-tux-story.html) :-))
Koweg and an Company in G?rlitz made PIO and other Foil Condensers,
Ceramics came from Keramische Werke Hermsdorf (KWH).
We had a trainfold "Praktische Arbeit"i (practical work) in the school
when I was around 14-15 years old.
Every 2nd week there where some work hours in workshops where parts are
made for the local industry. In my case we made some length rulers for
woodworkers (The man in the forrests), Parts for vinyl record players
under the hood of the "Freiberger Pr?zisionsmechanik" a part of The
Carl Zeiss Jena combinate (conzern) and I spot weldet the kathode foil
of axial electrolytic caps into the aluminum housing of caps for frolyt
to this time.
We had to make an test if the hand sweat contained chlor, If yes, the
condensers where bad after handling the inside parts, such boys and girls
got other jobs.
So far as I know there is nothing really special on the recipe for the
electrolyte, but it seems, that Chinese companies failed to get a working
recipe. Don't ask me why, tought the would copy better such things.
But I know that the manufacturers use different soups in ther condensers.
You can smell different things when the condensers are bad, some really
stinking fishy, Frolyts and others not, they have a different technical
smell..(couldn't explain).
I've seen thousends of elektrolytics too, still curios about bad sprague caps
in TEK 7000 PSUs (5V raw rail). Since they had a ugly footprint I've opened the
can and inserted other condensers. The wound part inside the spragues was
still wet and ok, but the Anode connection was corroded in two halves?!?
There are other companies where I don't have good experiences, Roederstein
On 18 Dec 2011
at 19:46, Holm Tiffe wrote:
> He was loughing loudly, Frolyt builds electrolytics here since ages..
> The recipe of the electrolyte is top secret.
Is that a challenge for somebody to cut oepn a acpacitor and anaylse the
electrolyte?
It's amazing to me that in my entire life, I have never run across a
Frolyt capacitor. Until the rise of China and Japan, it has been
Now hae I. And like you I must have seen thousands of electrolytics in my
lifetime. from Western Germany for Example, I had many many bad
caps from them in the
past. Such condensers where mounted from time to time in east
german products,
others where Tesla and some polish and russian types.
Since this, I think the production put out of Frolyt wasn't big enough to
satify the needs of the local industry, which in the other way explains why
you don't evers seen one. :-)
Wan't to buy an old east-german radio?
I don't have such bad experiences with Frolyts, I still have some from before
the fall of the iron curtain and I still use them for repair old devices (after
checking the ESR).
Regards,
Holm
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