| 单词 | screened grid |
| 释义 | > as lemmasscreened grid screened grid n. Electronics (now chiefly historical) attributive designating a thermionic valve in which the anode is screened from the control grid by a screen grid (spec. a tetrode, lacking the suppressor grid present in a pentode); containing or using such a valve. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve > [noun] > grid grid1907 screen1914 screened grid1927 screen grid1927 suppressor grid1931 suppressor1932 1927 Jrnl. Optical Soc. Amer. 15 32 Reaction of the tuning circuit on the crystal, though small, may be avoided by the use of a screened-grid tube, or a neutralized tube. 1929 Radio Times 8 Nov. 409 (advt.) You could not get a better 3-valve set than the Brown Screened Grid Receiver. 1943 C. L. Boltz Basic Radio x. 164 The pentode has ousted the screened-grid valve from radio circuits. 1968 G. H. Olsen Electronics iv. 95 This second grid serves as an electrostatic screen and reduces the anode-to-grid capacitance... The resulting valve is known as a screened grid valve. 2009 F. Nebeker Dawn of Electronic Age i. 41 In 1916 Schottky inserted a grid between control grid and anode in order to increase gain, thus making what came to be called the screened grid tube. < as lemmas |
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