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This Page is a courtesy of www.vacuumtubes.net & Svetlana Click here to visit our website [The Basics] - [Inside a Tube] - [Why are Tubes Still Used] - [Using Tubes] The BASICS Back in 1904, British scientist John Ambrose Fleming first showed his device to convert an alternating current signal into direct current. The "Fleming diode" was based on an effect that Thomas Edison had first discovered in 1880, and had not put to useful work at the time.
Home > Tube Control Panel Here you will find just about every tube ever made. Whether you are repairing an old TV, building an audio amplifier or refurbishing your company's induction furnace, we have your tube. If we don't have it...we will find it.