| 单词 | screen-grid valve |
| 释义 | > as lemmasscreen-grid valve screen grid n. Electronics an electrode, typically in the form of a grid or mesh, which is placed between the control grid and the anode of a thermionic valve in order to reduce the capacitance between them; frequently attributive, as screen-grid tube, screen-grid 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 N.Y. Times 9 Oct. ix. 19/2 The detrimental effect of self-capacity is said to be absent in the UX-222 [receiving tube], because of the introduction of the fourth element, the screen-grid. 1928 Pop. Mech. Feb. 303/1 One of the most interesting developments in radio receiving is the new screen-grid tube. 1942 Electronic Engin. 15 10/1 When used as a triode the suppressor and screen grids are connected to anode. 1982 C. E. Miller Pract. Handbk. Valve Radio Repair i. 6/1 The screen grid valve was a great step forward and made possible the design of really useful RF amplifiers. 2008 G. M. Ballou Handbk. Sound Engineers (ed. 4) 311/1 The screen grid is maintained at a positive potential to reduce the capacitance existing between the plate and the control grid. < as lemmas |
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