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Old 21st March 2009, 01:45 PM   #1
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Default interesting new tube sockets

http://home.att.net/~chimeraone/axialtubesockets.html
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Old 21st March 2009, 02:16 PM   #2
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Polystyrene has a much low melting point than PTFE and it's dielectric constant is significantly higher than Teflon.

Perhaps before someone goes out and buys the sockets at $50 a pop they should read Bob Pease's (National Semi's analog guru) white-paper on capacitor soakage. In fact, read Pease's entire book on Analog Circuit Design -- it's far less expensive experience than this hocum.
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Old 21st March 2009, 02:33 PM   #3
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To be fair, they claimed that the PS is crosslinked. If true, that raises the service temperature. That would also help make these mechanically stronger than Teflon. But $50 each and a goofy story? Nah.

Generally, crosslinked PS is made from a starting resin which is a copolymer of styrene and divinylbenzene. The resulting material will probably have worse electrical properties than thermoplastic PS, but the advantage is that audiophiles recognize the name "polystyrene" and associate it with "good" components.

There are much better materials out there for this sort of thing. If you want the dielectric constant to be low while retaining good mechanical strength (Teflon is lousy in that respect), I would think that something like Ultem or PPS loaded with phenolic microballoons would do the trick.
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Old 21st March 2009, 02:36 PM   #4
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Not sure about the specs ... but they are still new (in my book anyway). I agree that price does not indicate the quality/value of the product. Nevertheless, I am always interested to share and discuss new products, especially because I do not have money to test them
The title says "interesting" and not "magical"
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Old 21st March 2009, 02:37 PM   #5
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BTW, dielectric constant of non-crosslinked PS is indeed higher than PTFE, but not by a lot. 2.4 to 2.1, if memory serves.
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Old 21st March 2009, 02:46 PM   #6
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Quote:
Originally posted by SY

Generally, crosslinked PS is made from a starting resin which is a copolymer of styrene and divinylbenzene.
Yupp, you've got that nice polar molecule...

I could never get the boat and chairs right, that's why I switched to Physics.
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