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HI volt section
Neon and other Geissler Tubes Collection


old Geissler tube


most likely my oldest Geissler tube


new type, with Argon


new type with Xenon


old X-Ray tube


Special Experimental tube, with valves in each end for easy vacum and gas connection


by changing the gax mixture and vacum levels we could change its color and brightness


here a lot more Neon to make its glow more orange


a special Neon sign F


it is the powder on the glass that increase efficiency a lot


a little test setup, vacum pump, neon gas, 10kV 100mA transformator, vario trafo for adjustable hi voltage, drop resistors for current limiting


another test setup including voltage doubler


a very special valved glass tube


length 510mm and diameter 30mm




a bunch on cool neon sign tubes


a bunch on cool neon sign tubes


a bunch on cool neon sign tubes


Pure argon in green glass








a few new RGB tubes for a DMX RGB project







pure NEON




Argon in clear glass



Argon with UV filter