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Archive for October 28th, 2016

Vacuum Tube LEDs: 6H6GT Dual Diode

Having accumulated a set of octal tube base clamps, it’s now a matter of selecting the proper clamp for each tube:

Octal tube base V-block clamps

Octal tube base V-block clamps

The process of shell-drilling the tube base, drilling the hard drive platter, printing a tube socket and case, wiring up the Arduino and base LED, then assembling the whole thing requires a bit of manual labor, assisted by some moderately exotic shop machinery.

The getter flash atop this small 6H6GT dual diode tube rules out a cap and there’s not enough space for a side light:

6H6GT - on platter

6H6GT – on platter

Fortunately, the base LED completely lights the internal glass:

6H6GT - purple phase

6H6GT – purple phase

The slowly changing color would make a fine night light:

6H6GT - cyan phase

6H6GT – cyan phase

It must be Art!

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