| 单词 | pentode |
| 释义 | pentode[ pen-tohd ] / ˈpɛn toʊd / noun Electronics.a vacuum tube having five electrodes, usually a plate, three grids, and a cathode, within the same envelope. Origin of pentode1915–20; pent- + -ode2 Words nearby pentodePentland Firth, pentlandite, pentobarbital, pentobarbital sodium, pentobarbitone, pentode, pentolite, pentomic, pentosan, pentose, pentose nucleic acid Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for pentode
British Dictionary definitions for pentodepentode / (ˈpɛntəʊd) / nounan electronic valve having five electrodes: a cathode, anode, and three grids (modifier) (of a transistor) having three terminals at the base or gate Word Origin for pentodeC20: from penta- + Greek hodos way Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for pentodepentode [ 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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