Different techniques were designed for achieving variable voltage levels and one of them is called PWM(abbreviation of Pulse Width Modulation), which is considered to be the most effective one. step-down transformers etc.) dissipates energy and thus wasn't that effective. So, there was a need to generate variable voltage supplies with minimal power losses, as other methods(i.e. Now if we have a look at these electrical appliances, they operate at different voltage levels and may also need variable voltage supply(as in fan dimmers). Both of these signals are used as a power source for different types of electrical appliances. One important thing to mention here is "PWM can be applied on both AC and DC electrical signals".Īs we all know, there are two main types of electrical signals i.e. PWM Definition, PWM generation, why we need PWM signals? how it is used in a variety of applications ranging from motors, heating systems, hydraulics, control valves, pumps etc. I will try to cover everything related to PWM i.e. Today, I'll discuss an important topic titled "Introduction to PWM".
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