In military applications, a high-power vacuum tube can generate a 10–100 megawatt signal that can burn out an unprotected receiver's frontend. Such devices are considered non-nuclear electromagnetic weapons; they were introduced in the late 1990s by both the U.S. and Russia. See more A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. See more The 19th century saw increasing research with evacuated tubes, such as the Geissler and Crookes tubes. The many scientists and inventors who experimented with such tubes include Thomas Edison, Eugen Goldstein, Nikola Tesla, and Johann Wilhelm Hittorf. … See more Most modern tubes have glass envelopes, but metal, fused quartz (silica) and ceramic have also been used. A first version of the 6L6 used a metal envelope sealed with glass … See more The generic name "[thermionic] valve" used in the UK derives from the unidirectional current flow allowed by the earliest device, the thermionic diode emitting electrons from a heated filament, by analogy with a non-return valve in a water pipe. The US names "vacuum … See more One classification of thermionic vacuum tubes is by the number of active electrodes. A device with two active elements is a See more A vacuum tube consists of two or more electrodes in a vacuum inside an airtight envelope. Most tubes have glass envelopes with a glass-to-metal seal based on kovar sealable borosilicate glasses, though ceramic and metal envelopes (atop insulating bases) … See more A considerable amount of heat is produced when tubes operate, from both the filament (heater) and the stream of electrons bombarding the plate. In power amplifiers, this source of heat is greater than cathode heating. A few types of tube permit operation … See more http://www.diyaudioprojects.com/Tubes/tubes.htm

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WebFor those building this from scratch, the circuit of the vacuum tube device is a high powered Hartley radio frequency oscillator tuned to the resonant frequency of the secondary coil. The circuit uses a medium powered … WebSupply air to two power tools without worrying about your lines getting tangled. Bend-and-Stay Air Hose. Bend-and-Stay Air Hose. Bend this hose around obstructions and corners, … chinese buffet troy ny

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WebOur vacuum cleaner is designed to make cleaning a breeze. With its powerful suction and easy-to-use features, you can quickly and effectively clean any space... WebThese amps are rated for output up to 170 Watts @ 4 & 8 ohms! It uses only two tubes per channel so the signal path is not messed with like it is in typical high-power amp circuits using several times as many tubes. The input/driver tube is the common 6N1p-EB tube. http://www.theradiohistorian.org/transmitters/transmitters.html grander marine panama city