B85321A2363G300

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EMI/RFI filters, or LC (inductor-capacitor) and RC (resistor-capacitor) networks, are essential components of electronic circuits that manage electromagnetic interference (EMI), radio frequency interference (RFI), conducted emissions, and other power disturbances. The B85321A2363G300 filter is a part of this essential family of components. Its application field and working principles should be understood when considering adding these components in a circuit design.

Application Field
The B85321A2363G300 offers techniques for design flexibility when it comes to its application field. The EMI/RFI filter is primarily used for medical and industrial equipment, as well as optical data communication systems, automotive, control systems, embedded systems, and embedded consumer products. Its application field can be generalized to any system that is susceptible to various forms of EMI. This is because the filter allows electrical power to be shaped and manipulated in any given configuration.

Working Principles
The working principle behind the B85321A2363G300 is the implementation of LC or RC networks in order to reduce the amount of electromagnetic interference or power disturbances. Generally, LC filters are composed of inductors and capacitors, while RC filters consist only of resistors and capacitors. Both types of filters work by attenuating the power supply signals and by blocking the high-frequency interference from entering the system. This allows the signal to remain clean and undistorted.

In a LC filter, inductors are used to respond to the changing current in a given circuit. When a current is increased, the inductor will oppose the current flow, forming a “short” that will reduce the current. On the other hand, capacitors are used to respond to a voltage change; when a voltage is increased, the capacitors will oppose the voltage, reducing the voltage. When these two components are arranged in a series and parallel configuration, the LC filter will be used to block high-frequency interference and to pass the low-frequency signals, resulting in a clean and undistorted power supply signal.

An RC filter, on the other hand, utilizes the same components, namely resistors and capacitors. The resistor works in the same way as an inductor; as the current increases, the resistance of the resistor increases, creating a short, and thus limiting the current. Similarly, the capacitor works the same as before by opposing a voltage change. The RC filter functions differently compared to the LC filter. It does not block out the high-frequency interference and pass the low-frequency signals, but rather attenuates both frequencies. This is due to the resistor and capacitor being connected in a series configuration.

The features of both LC and RC filters, as well as their working principles, should be taken into account when considering a B85321A2363G300 filter for any given application. Depending on the system’s requirements and susceptibility to EMI, one or both of these filters can be used in a power supply design. With the proper use of LC and RC filters, environmental and system noise can be greatly reduced.

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