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:
Example of duty cycle
In an automotive electronic fuel injection system, voltage pulses supplied to the fuel injector valve solenoid control the fuel injector valve at a fixed rate of 10 cycles per second, or 10 Hz.
Pulse width modulation allows fuel supplied to the engine to be precisely controlled electronically. The voltage average for each duty cycle is determined by the amount of pulse ON time.
Duty cycled solenoids use a variable duty cycle signal to vary flow or adjust pressure. The longer a solenoid remains open, the more flow and less pressure develops. These solenoids are either feed-controlled or ground-controlled.
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.
If you like our post “What is the Duty Cycle? Then like and share this post with your friends and if you feel that you have learned something great today than comment below and appreciate the efforts, Thanks
- What is Zener_Diode – Working and Applications of Zener
- What is LED- Working and Applications of LED
- What is PhotoDiode? Working and Applications of PhotoDiode
- What is Tunnel_Diode –Working, Characteristics & Applications
- What is Varactor_Diode, operations and Practical Applications
- What is Diode Clamper Circuits and How they Work?
- What is PN Junction Diode, Characteristics, and Applications.