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Re: Help please - info on big CDE pulse caps?

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx> To: <tesla@xxxxxxxxxx> Sent: Saturday, January 08, 2005 7:20 PM Subject: Help please - info on big CDE pulse caps?

> Original poster: FIFTYGUY@xxxxxxx > > The caps themselves are a reasonable 9" wide by 12" deep by 25" tall, > with a single 16" tall by 5" diameter insulator on top of that. Kinda > heavy. Connection is via the terminal on top of the insulator and by the > case of the caps themselves (mounting flanges on the bottom and "ears" on > the sides of the case). > Ink on the sides reads: > "CORNELL DUBILIER ELECTRONICS > TKB 165 > .15 MFD 120KVDC > 50[degree]C MAX OPERATING > SERIAL NO. 109 > MANUFACTURED FOR RCA SERVICE COMPANY > CAMDEN, NEW JERSEY, PER CEMCO > SPECIFICATION NUMBER 3079B > MODIFIED PER G-41839002-J31 DATED 17 JUL 1964"

Wow! Sounds like you struck paydirt on HV caps ;^)

> If the ".15MFD" means .15 micro-Farads, then they are kinda big for > their energy storage.Perhaps the high voltage rating explains this > disproportionate case size and insulator height.

Yes, the 120 kV voltage rating is quite high and explains the
relatively large volume vs uFd rating. Also, considering their
date on manufacture, they are certainly not that big for their
energy rating.

 They are definitely
> oil-filled, and I am told by someone who dissected one that they have an
> internal voltage-distribution network of resistors. One has been a tad
> leaky at the base of the insulator, but the leak is very thick and
sticky -
> like molasses.

Oooh, that sounds a lot like a PCB based dielectric, especially consi-
dering that they were manufactured well before 1977. I'd try not to
get any of that "molasses" on me :^O

>      Thank you very much for any help ya'll can provide!
> -Phil LaBudde

David Rieben