| 释义 |
wobbulator Electronics.|ˈwɒbjʊleɪtə(r)|
Also wobulator.
[f. wobble n. or v. + modulator.]
A device for producing a signal whose frequency varies rapidly and repeatedly between two limits.
1945Cooke & Markus Electronics Dict. 428/1 Wobbulator. 1958Electronic Engin. XXX. 541 A wobulator for amplitude testing often gives errors because of unwanted signal amplitude variations. 1977S. W. Amos Radio, T.V. & Audio Technical Reference Bk. xxxii. 9 Alignment should not be attempted on any u.h.f. tuner without the use of a u.h.f. wobbulator.
So ˈwobbulated ppl. a., varied or produced by means of a wobbulator; wobbuˈlation, repeated variation of a frequency by a wobbulator.
1944Electronic Engin. XVI. 327/3 A powerful high⁓frequency sound with a wobbulated effect might give the birds a disagreeable sensation. 1957Practical Wireless XXXIII. 569/1 Apply a 10·7 Mc/s signal, wobbulated 300 kc/s, to a test point. 1965New Scientist 15 Apr. 156/1 ‘Wobbulation’ or the sweeping of the modulation frequency through 15 per cent either way of its mean value. 1982IEEE Jrnl. Solid-State Circuits XVII. 671/1 The initial and final frequencies, the wobbulation rate, the ramp amplitude and frequency, and the wobbulation mode are all controlled from the input data. |