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pentode
[ pen-tohd ]
noun
, Electronics.
- a vacuum tube having five electrodes, usually a plate, three grids, and a cathode, within the same envelope.
pentode
/ ˈpɛntəʊd /
noun
- an electronic valve having five electrodes: a cathode, anode, and three grids
- modifier (of a transistor) having three terminals at the base or gate
pentode
/ pĕn′tōd′ /
- Any electron tube with the basic structure and functionality of a triode, but including two extra electrodes, a screen and a suppressor grid . The screen helps the tube respond well at high frequencies (as in a tetrode ), while a negatively charged suppressor grid adjacent to the plate prevents secondary emission of electrons from the plate, increasing the efficiency of the tube.
- See more at suppressor
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Word History and Origins
Origin of pentode1
1915–20; pent- ( def ) + -ode 2
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Word History and Origins
Origin of pentode1
C20: from penta- + Greek hodos way
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Compare Meanings
How does pentode compare to similar and commonly confused words? Explore the most common comparisons:
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Example Sentences
Remember how he went to all the trouble of building a pentode vacuum tube for a job that could have been done by transistors.
From Project Gutenberg
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