单词 | scanning coil |
释义 | > as lemmasscanning coil scanning coil n. any of four coils arranged in pairs around the neck of a cathode-ray tube, the magnetic field of which is varied so as to cause the electron beam to trace out a raster pattern on the screen of the tube. ΘΚΠ society > communication > broadcasting > television > transmitting or receiving apparatus > [noun] > scanning devices mirror drum1927 scanning disc1927 scanner1929 Nipkow disc1934 line scan1938 scanning coil1938 1938 J. H. Reyner Testing Television Sets iv. 41 The function of the transformer is to step-down the voltage applied to the scanning coil which operates with a correspondingly larger current. 1978 Broadcast 27 Nov. 15/2 Camera heads are still stuck with bulky camera tubes, scanning coils, splitter blocks and such paraphernalia. < as lemmas |
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