What is Duty Cycle?
Duty cycle is the ratio of time on a circuit when the load is ON compared to the time when the load is OFF.
we can say that “the Duty cycle is the measure of the system’s active time”. Basically, it is measured in percentage (%) that what percent of the load is ON compared to OFF-load.
Formula of Duty Cycle:
- Where D is the duty cycle,
- PW is the pulse width (pulse on or active time)
- T is the total period of the signal.
Explanation of Duty Cycle:
If a digital signal spends its half of the time ON and the other half OFF, then the digital signal has the duty-cycle of 50%. If the percentage is higher than 50%, the digital signal spends more time in the high state than the low state and vice versa if the duty cycle is less than 50%.
More the duty cycle percentage (%) betters the system operation.
Here is a figure that illustrates better about duty cycle:
Duty Cycle in Electronics:
In Digital Electronics, signals are represented by logic levels of 1 and 0. Logic 1 stands for the presence of an electric signal and 0 in the absence of an electric signal.
A Digital signal has a square output (10101010) then the duty cycle for this signal will 50% because the pulse remains high for almost half (1/2) of the period and low for another half (1/2) of the period. Almost every component and system has its own duty cycle value which indicates that it will be operated up to this value of duty-cycle.
Duty Cycle in Electrical:
Electrical motors use very less duty-cycle. if a motor runs for one out of 200 seconds or 1/200 of the time, then, its duty cycle is 1/200, or 0.5 per cent.
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