Happy Birthday Dear Tu-uube!


On this day in 1904 British engineer John Ambrose Fleming invented and patented the two-electrode vacuum-tube rectifier, which he called the oscillation valve. It was also called a thermionic valve, vacuum diode, kenotron, thermionic tube, or Fleming valve. This invention is often considered to have been the beginning of electronics, and without Mr Fleming, we wouldn’t have all this great sounding audio gear.

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