PEMI4QFN/RE,132

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EMI/RFI Filters (LC, RC Networks)

The PEMI4QFN/RE,132 is a type of EMI/RFI filter (electromagnetic interference/ radio frequency interference). These filters are used to protect equipment against unwanted signals, which can sometimes be generated by other pieces of equipment. They are usually designed as LC or RC networks, meaning they contain either inductors or capacitors.

Application Field

EMI/RFI filters are used in a wide variety of industries, including those dealing with telecommunications, consumer electronics, aerospace, military, medical, network and data centers. They are also used in industrial applications, such as factory automation, and in vehicles. Examples of applications for PEMI4QFN/RE,132 specifically include power supplies, automotive components, LED lighting systems, medical devices and even mobile phones.

Working Principle

The working principle of the EMI/RFI filter is based on the fact that electromagnetic and radio frequency waves have certain characteristics, such as a frequency and an intensity. The filter uses this information to allow the desired signals to pass through, while blocking out or attenuating any other interfering signals. This is achieved through the use of circulating currents or loop inductors and capacitors. By creating a coupled inductor-capacitor circuit, the filter can block out any signals that are not the desired frequency. The inductors also create an opposing current, which helps to reduce the intensity of any external signals.

Conclusion

The PEMI4QFN/RE,132 is an example of an EMI/RFI filter and is used broadly across many industries to protect equipment from unwanted interference from radio and electromagnetic waves. It is designed as an LC or RC network and works on the principle of blocking out undesired signals, while allowing desired signals to pass through. This is achieved through the use of inductors and capacitors which create a coupled circuit, and by creating an opposing current which reduces the intensity of any external signals.

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