Application of PWM Controller in Communication

Release date:

2022-10-07 11:42

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One of the advantages of PWM is that the signals from the processor to the controlled system are all in digital form, without the need for digital-to-analog conversion. Keeping the signal in digital form minimizes the effects of noise. Noise can only affect a digital signal if it is strong enough to change a logic 1 to a logic 0 or a logic 0 to a logic 1.

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Increased immunity to noise is another advantage of PWM over analog control, and it is the main reason why PWM is sometimes used for communication. Switching from analog to PWM can greatly extend communication distances. At the receiving end, the modulated high frequency square wave can be filtered out and the signal restored to analog form through an appropriate RC or LC network. PWM is widely used in a variety of systems.
In conclusion, PWM is economical, space-saving, and has strong anti-noise performance, and is an effective technique worthy of engineers in many design applications.

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