In
telecommunication and
electronics, the term duty cycle has the following meanings: Duty cycle is the proportion of time during which a component, device, or system is operated. Suppose a disk drive operates for 1 second, then is shut off for 99 seconds, then is run for 1 second again, and so on. The drive runs for one out of 100 seconds, or 1/100 of the time, and its duty cycle is therefore 1/100, or 1 percent.
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1. In an ideal
pulse train, i.e. , one having rectangular pulses, the ratio of the
pulse duration to the
pulse period. (
188 ) Note: For example, the duty cycle is 0.25 for a pulse train in which the pulse duration is 1 s and the pulse period is 4 s. 2. The ratio of (a) the sum of all pulse durations during a specified period of
continuous operation to (b) the total specified period of operation. 3. In a
continuously variable slope delta (CVSD) modulation converter, the mean proportion of
binary "1" digits at the converter
output in which each "1" indicates a
run of a specified number of consecutive bits of the same polarity in the
digital output
signal. (
188 ) 4. In a periodic phenomenon, the ratio of the duration of the phenomenon in a given period to the period. Note: In a piece of electrical equipment, e.g. , an electric motor, the period for which it may be operated without deleterious effects, e.g. , from overheating.
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