NAH-30-222-D

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NAH-30-222-D Power Line Filter Modules: Application Field and Working Principle

Power line filter modules, such as the NAH-30-222-D, have evolved over the years to become reliable and efficient components for managing electrical interference caused by electro-magnetic fields. These modules play an important role in power line applications such as industrial, medical, and aerospace applications that require power line filters to ensure the proper operation of equipment. This article provides an overview of the application fields and working principles of the NAH-30-222-D.

Application fields

The NAH-30-222-D is a cost-effective power line filter module that is suitable for use in a wide variety of applications due to its low cost, robust operation, multitude of connection options, and high frequency supported range. This module can be used in industrial applications, medical applications, as well as aerospace applications.

• Industrial applications: The NAH-30-222-D can be used in industrial applications to protect control circuits from all types of detrimental disturbance signals and to eliminate common-mode and differential-mode noise on the power line. It is also suitable as a surge suppressor, as it can prevent against overvoltages and reduce the current and voltage surges from overloads. This module is also suitable for use in applications that require line noise elimination, such as arc or plasma welding machines.
• Medical applications: The module can be used in medical applications for its ability to reduce EMI frequencies and provide adequate power line filtration. It is suitable for use in medical equipment, such as patient monitoring systems and dental chairs. This module can also provide superior protection against over-voltages and reduce current and voltage surges from overloads.
• Aerospace applications: The NAH-30-222-D can also be used in aerospace applications, such as aircrafts, helicopters, and satellite systems. It has proven to be an effective power line filter in providing tremendous protection and filtration against RFI/EMI in aerospace applications.

Working Principle

The working principle of the NAH-30-222-D is based on the principle of inductive reactance. The module is designed to reduce differential-mode and common-mode EMC/EMI noise by providing a low impedance path for the noise to flow. The module works by connecting a parallel inductor, capacitor, and resistor in series with the line. This combination of components creates a filter circuit which can reduce EMI noise by a factor of 12dB or more. The inductor acts as an electronic choke that short circuits high-frequency differential noises , while the capacitor blocks low-frequency difference signals. The resistor provides the capacitors and inductors with the necessary impedance to filter out the EMI noise. The module is designed to reduce both common-mode and differential-mode noise, resulting in improved system performance and reliability.

In conclusion, the NAH-30-222-D is a cost-effective power line filter module that can be used in a variety of industrial, medical, and aerospace applications. It works by providing a low impedance path for EMC/EMI noise and using the combination of an inductor, capacitor, and resistor to filter out the noise. This module offers superior protection from over-voltages and provides improved system performance and reliability.

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