pulse widthn. the duration of a pulse, esp. an electrical pulse.
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1947 R. LeeElectronic Transformers & Circuits ix. 220 Common pulse widths lie between 0·5 and 10 microseconds.
1991 New Scientist 31 Aug. 52/3 The frequency range used is 3 to 30 megahertz;..the pulse width may be from hundreds of microseconds to several milliseconds.