Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

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Here is an old published example

Posted by Russ57 on December 1, 2004 at 10:03:15:
It's from Eastman, "Fundamentals of Vacuum Tubes". Dave Slage deserves credit for digging it up. I just found it's link on another website. Also look at Damir's explanation below...the one I said I like. The URL is http://131.109.59.51/images/tubes/ppamp.jpg

Russ