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Anode structure with attached cooling fins top left, cathode and control grid structure top right, screen grid bottom. Note absence of beam plates, cylindrical symmetry, and slotted screw holes, allowing alignment of the screen grid during manufacture.Inset: Complete valve. A beam tetrode, sometimes called a beam power tube, is a type of vacuum ...
YD1336 – 1.8 kW, Air-cooled, UHF power triode. YD1342 – 30 MHz, 530 kW, Water-cooled RF power triode. YD1352S (8867, DX334) – 5 MHz, 2 kW, Water-cooled Neotron, a gridless field-effect tube where a magnetically focused electron beam is modulated by varying the voltage of a gate electrode surrounding it.
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.
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 ...
1,500 tubes. It was the basis of about 15 other computers. MESM: 1951 1 First universally programmable computer in USSR, built near Kiev, used 6,000 vacuum tubes. Designed basically near to Von Neumann architecture but had two separate banks of memory - one for programs and another for data Remington Rand 409: 1952 ~1,000
ECL113 – Triode - AF power pentode, Rimlock base. ECL200 – Triode - CRT drive power pentode, decal base, PCL200 with a different heater. ECL802 – Triode - Power pentode for use as vertical oscillator and output tube in TV receivers. ECL805 – Triode - Power pentode with separate cathodes, PCL805 with a different heater.
Wunderlich (vacuum tube) Wunderlich refers to a series of vacuum tubes introduced in the early 1930s. Wunderlichs were designed to be used as full-wave detectors in AM radio receivers. However, because of their unusual design, they were rarely used in commercially manufactured receivers.
VT-158. The VT-158, also known as the Zahl tube, was a vacuum tube invented by American physicist Harold A. Zahl in the 1930s and used during World War II and the Korean War. It allowed the radar technology at the time to detect low-flying planes by generating enough power to produce ultrahigh frequency energy. [1] [2]
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