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GE Pyranol Capacitor (Yay for PCBs!)

GE Pyranol Capacitor (Yay for PCBs!)

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This is an old GE Pyranol branded capacitor I have. It’s rated 2 microfarads and at 1000 VDC or 440 VAC at 60 cycles, maximum. I was wondering if anyone here can date it based on the numbers stamped in the case. I know it has to be pre-1960, as the frequency is listed in cycles, not Hertz, as Hertz didn’t exist until it was established as the SI unit for frequency in 1960.

The properties of polychlorinated biphenyls are very good from an electrical standpoint. It’s too bad that they are toxic and cause environmental issues. Personally, I just like the fact that they won’t burn. Using mineral oil in a transformer or capacitor makes me uncomfortable. We figured out it was a bad idea in the early 20th century, and invented polychlorinated napthalenes, then polychlorinated biphynels, which have better electrical properties and are less toxic than the PCNs, to replace mineral oil. The whole situation is a bit of a catch-22, but I’d personally rather not have a giant fireball form whenever a substation transformer or pole transformer arcs or shorts.

385DAD7B-E110-432E-8DE2-63660A65053C.jpeg F6CC2E9F-0CD5-42C2-8D54-4E4B858353F5.jpeg 563EDBA9-FF9D-4392-8B49-64E33725D5BF.jpeg 4F17C6FF-9798-4F33-B06D-EDEB54320E00.jpeg

Light Information

Light Information

Manufacturer:General Electric
Model Reference:CAT 23F897

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Album name:Mr. Orthosilicate / Ballasts
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HomeBrewLamps
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Oct 16, 2019 at 08:04 PM Author: HomeBrewLamps
New Old stock?

~Owen

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Oct 16, 2019 at 08:08 PM Author: wide-lite 1000
I'd GUESS 44th week of '56

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

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Oct 16, 2019 at 08:15 PM Author: Mr. Orthosilicate
Yes, it’s NOS.
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Oct 16, 2019 at 08:24 PM Author: HomeBrewLamps
Awesome

~Owen

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Oct 16, 2019 at 10:03 PM Author: monkeyface
As long as it is not leaking it’s good.
They very rarely loose capacity and are even years beyond the life of the device still matching their specifications.

Today you get cheap dry plastic caps or at least vegetable oil filled ones which leak very often when exposed to elevated heat.
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Oct 17, 2019 at 04:40 PM Author: Mr. Orthosilicate

As long as it is not leaking it’s good.
They very rarely loose capacity and are even years beyond the life of the device still matching their specifications.

Today you get cheap dry plastic caps or at least vegetable oil filled ones which leak very often when exposed to elevated heat.


That’s the reason I bought it. I know it’s unlikely to ever fail. They’re very reliable, and even when they do fail, there’s no fireworks show because PCBs don’t burn, although it is a pain to clean up.
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Oct 17, 2019 at 08:25 PM Author: HomeBrewLamps
Where can I get pcb caps? I like reliability.

~Owen

Mercury Vapor LampHigh Pressure Sodium Scavenger, Urban Explorer, Lighting Enthusiast and Creator of homebrewlamps Cool High Pressure SodiumMercury Vapor Lamp

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