question about polyethylene/mineral oil cap construction
Subject: question about polyethylene/mineral oil cap construction
Date: Sun, 09 Apr 1995 22:49:46 -0400 (EDT)
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I was looking over the notes on building polyethylene capacitors
in Chip's FAQ and I was puzzled by something. I believe Richard comments
that after the minerla oil is added and one pumps the cap with a vacuum
pump, the cap will "outgas" for quite some time. In fact, it seems that
Richard says they will contine to outgas to some degree for as long as he
has has patience to pump.
What is outgassing? The oil, or the poly? Vacuum pump grade mineral
oil will outgas at such a minimal rate that one should stop seeing bubbles
after a short time. I wouldn't have guessed the poly unless gas is
entrained durning manufacture...