| 释义 |
transducer|trɑːnsˈdjuːsə(r), træns-, -nz-|
[f. L. transdūcere to lead across, transfer, f. trans trans- + dūcere to lead: see -er1.]
Any device by which variations in one physical quantity (e.g. pressure, brightness) are quantitatively converted into variations in another (e.g. voltage, position).
1924K. S. Johnson Transmission Circuits for Telephonic Communic. vii. 46 A structure which, when inserted in a circuit, enables this maximum possible power to be absorbed in the receiving circuit is called an ideal transducer. 1948[see quantizer]. 1957New Scientist 12 Dec. 30/2 The excitation of sensory [nerve] endings, physiological ‘transducers’ of mechanical changes into electrical signals. 1965Wireless World July 31 (Advt.), Racal Magnetic Transducer..converts rotational movement to a pulse output without physical connection to the shaft under test. 1973M. Woodhouse Blue Bone ii. 11 We designed and sold a capacitative transducer head for somebody else's flowmeter. 1976A. Hope Hi-Fi Handbk. 88 Although we have so far considered only moving coil-moving cone loudspeakers, there are other types of ‘transducer’ on the market which convert electrical energy into sound in different ways. 1980Jrnl. R. Soc. Arts May 348/2 Huxley and Simmons use extremely fast-acting motors and transducers to record force changes in small fractions of a millisecond. |