Hi Don,
My dad (KBØTLZ) who started out on spark gap in the West VA mountains was a
well
published research chemist for Mallinckrodt. Dad got a ticket after he
retired so he could
talk to his five boys on ten meters.
As you recall we had a huge dioxin issue in Missouri in the 80's.
Pop started his career on the tail end of the Manhatten project at WU in Stl
and he also
smoked for 50 years. He did die of cancer 2 years ago at the age of 83.
Dad said the EPA and the rest of them really didn't know what dioxin did to
a person
but it was a fact that it degenerated in nature with exposure to natural UV.
I just thought I'd pass those words along. I am not a chemist (published or
unpublished)
so I can't validate Dad's words, but most of his contemporaries respected
his opinion.
How have things been going ?
I enjoy your postings.
John
WAØSTX/4
Mx
----- Original Message -----
From: "D. Chester" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, May 20, 2008 1:38 AM
Subject: Re: [AMRadio] Oil filled capacitors
I ALWAYS mount mine terminals up. I have seen too many oil leaks to trust
doing it otherwise.
One of the reasons that the EPA is so paranoid about PCB is that it gives
off dioxin when it burns. They are worried that the building might catch
fire and incinerate the oil.
Except for burning it at high temperature, the toxicity of the oil has
been blown out of proportion. Until some time in the late 50's or early
60's, brake fluid reportedly contained PCB to make it hold up under high
temperature. The amount that has leaked into the environment from radio
capacitors and transformers is a drop in the bucket compared to its
automotive use.
The property of PCB that makes it so useful is that it is an excellent
electrical insulator while a good conductor of heat. Usually, a
substance that is a good heat insulator is a good electrical inulator
(glass for example) while a good conductor of heat is also a good
conductor of electricity (copper and other metals is a good example).
That makes it an excellent dielectric for capacitors and transformers. It
is also effective in conucting heat away from brake components.
Don k4kyv
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