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Questions about tubes and gear that glows. FAQ

Don't forget the chocolate frosting! - Plus a silly thermodynamic query

nightdoggy,

So, you've gone over to the anti-cryo crowd!

One thing I'm curious about is how the tube structure acquires very much heat? In the vacuum of the bottle, there is little to transfer the heat from glass to the plate/structure- with the tiny surface contact area, the micas will conduct only a little. I imagine the amount through the pins would be greater but still somewhat limited. -Am I correct that most of the heat felt eminating from a tube derives from the contact area between the pins where they pass through the glass?

The question of temperature transferrance through a tube has had me wondering about the nature of cryogenic treaments also. It would seem tubes would heat or cool in a particularily uneven manner.

I have 24 NOS Russian 6DJ8s I bought in 1990 for $3 each that are so microphonic I'm thinking the best use would be covering them in chocolate and using them to decorate cakes. -This would be the audiophile version of Monty Python's "Crunchy Frog" bon bon. "If we didn't use real frogs, it wouldn't be crunchy!"

A charming story- you terrifying an audio civilian with an eccentric recipe!


Cheers,

Bambi B






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