| 单词 | pulse width modulation |
| 释义 | > as lemmaspulse width modulation pulse width modulation n. Telecommunications a form of pulse modulation in which variations in the signal amplitude are represented by variations in the width (duration) of the pulses. ΘΚΠ society > communication > telecommunication > [noun] > signal > modulation choke control1909 modulation1919 frequency modulation1922 pulse modulation1929 phase modulation1930 undermodulation1940 pulse time modulation1944 pulse position modulation1945 PCM1947 pulse amplitude modulation1947 pulse code modulation1947 pulse frequency modulation1950 pulse width modulation1953 pulse duration modulation1956 1953 A. T. Starr Radio & Radar Technique i. 26 Pulse Width Modulation does not correspond to any normally emitted C.W. system, but corresponds to phase modulations of the frequencies ω, 2ω,..each multiplied by the original low-frequency signal. 1978 Gramophone Apr. 1790/1 Sony offered the first class D (pulse width modulation) power amplifier. 1991 Hydrocarbon Processing Sept. 181/3 A high performance microprocessor-based digital motor speed controller using current controlled pulse width modulation..for producing adjustable frequency speed control. < as lemmas |
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