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- Return of the Vacuum Tube
May 24, 2012, 2:42 am
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Re: Return of the Vacuum Tube
** The pic that accompanies that dopey story shows 4 x EL34s lit up like
Looks very much like the back view of a 100 watt Marshall as seen in the
dark. The blue glow is for real and corresponds with small slots in the
anodes of the particular EL34s that let high speed electrons through to
strike the glass.
Impact speed is about 4.4% of the speed of light.