PWM (Pulse Width Modulation).

Electronic devices are very user-friendly and can be used easily because we can control the device easily and use them according to our needs mostly devices are controlled with the PWM(Pulse Width Modulation) technology.
So, in this article, I will tell you about PWM(Pulse Width Modulation).

What is Pulse Width Modulation (PWM)?

Pulse Width modulation (PWM) is used to control the power that is supplied to various types of electrical devices, most especially to the AC/DC motors.
A Pulse Width Modulation (PWM) is a method for generating an analog signal using a digital source. The PWM signal consists of two main components that define its behavior: a duty cycle and a frequency.

Duty Cycle.

When the signal is high, we call this "on time". To describe the "on time", we use the concept of the duty cycle. The duty cycle is measured in percentage. The percentage duty cycle specifically describes the percentage of time a digital signal is on over an interval or period. This period is the inverse of the frequency of the waveform.

If a digital signal spends half of the time on and the other half off, we would say the digital signal has a duty cycle of 50% and resembles an ideal square wave. 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%.

Frequency.

The frequency determines how fast the PWM completes a cycle (i.e. 1000 Hz would be 1000 cycles per second), and therefore how fast it switches between high and low states. By cycling a digital signal off at a fast rate, and with a certain duty cycle, the output will appear to behave like a constant voltage analog signal when providing power to devices.

That is all about PWM (Pulse Width Modulation), in this article we have known what is PWM, and about the Duty Cycle and frequency.

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