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Grab our top-rated stick vacuum while it's on sale. ... Save $28 with Prime and coupon. See at Amazon. Cozsinoor Cooling Bed Pillows, Queen, 2-Pack ... The 10 best sales to shop this week: Target ...
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Directly AC-heated power tubes. 10 – Power triode – Early versions numbered UX-210 or CX-310. 26 – Medium-mu triode, used in early AC radio receivers manufactured in the late 1920s. Used as an RF or AF amplifier, but not as a detector or power output tube – Early versions numbered UX-226 or CX-326.
A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries, if not millennia, the history of vacuum tube computers is confined to the middle of the 20th century. Lee De Forest invented the triode in 1906.
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A vacuum tube, electron tube, [1] [2] [3] valve (British usage), or tube (North America) [4] is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a hot ...
In vacuum tube technology, HT or high tension describes the main power supply to the circuit, which produces the current between anode and cathode. It is also known as the plate supply or voltage, B battery supply, or simply labeled →B on circuit diagrams, from the days of battery powered circuitry . The HT supply circuit most commonly ...
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