1) Dutch invention 2) Electron tube 3) Thermionic tube 4) Thermionic vacuum tube 5) Thermionic valve 6) Tube 7) Vacuum tube
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https://www.crosswordclues.com/clue/pentode
A pentode is an electronic device having five active electrodes. The term most commonly applies to a three-grid amplifying vacuum tube (thermionic valve), which was invented by the Dutchman Bernhard D.H. Tellegen in 1926. The pentode consists of an evacuated glass envelope containing five electrodes in this order: a cathode heated by a filament, a...
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http://en.wikipedia.org/wiki/Pentode
A thermionic valve with anode, cathode and three grids, the control grid, screen grid and suppressor grid.
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http://jot101.com/2015/05/a-z-of-science-fiction-words/
vacuum-type electron tube with five electrodes. Besides the cathode filament, anode plate, and control grid of the triode and the added screen grid ... [2 related articles]
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http://www.britannica.com/eb/a-z/p/40
a five-electrode electronic tube containing an anode, a cathode, a control electrode, and two additional electrodes, usually a screen grid and a suppressor grid
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=531-31-04
A pentode is an electronic amplifying valve with five main electrodes.
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http://www.probertencyclopaedia.com/browse/GP.HTM
[
n] - a thermionic tube having five electrodes
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http://www.webdictionary.co.uk/definition.php?query=pentode
A multi-grid radio valve (or tube) with five electrodes (anode, cathode, control grid, screen grid, suppressor grid), commonly used in high-end audio preamplifiers, ham radios and assorted other electronic circuits.
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https://www.encyclo.co.uk/local/20820
noun a thermionic tube having five electrodes
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https://www.encyclo.co.uk/local/20974
No exact match found.
