EXC-14CP221U

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Common mode chokes, such as the EXC-14CP221U, are useful devices used to reject unwanted EMI in power electronic and communication systems. Common mode chokes reduce the noise that may be caused by differential mode interference, and provide additional protection from voltage transients. The EXC-14CP221U is a high quality, low noise, surface-mountable common mode choke designed to reduce electromagnetic interference (EMI) in various types of equipment, such as programmable logic controllers (PLCs) and motor controllers.

The EXC-14CP221U consists of a ferrite core and two windings of conductive wire. The ferrite core helps to reduce the amount of electromagnetic interference caused by the windings and allows for higher quality filtering than would be possible without the core material. The windings are designed to provide the desired impedance for the application. The windings are also designed in such a way that the common-mode inductance is much greater than the differential-mode inductance, which is necessary for common mode noise reduction.

The EXC-14CP221U is typically used in power electronic and communication systems, typically at the input and output of the system, as it provides a high level of EMI noise rejection. The EXC-14CP221U is used in motor controllers, power supplies, inverters, servo systems, and other power electronic systems. The EXC-14CP221U is also used in PLCs, communications systems, modems, and other communication systems.

The working principle of the EXC-14CP221U can be explained through Faraday\'s law of induction. This states that a changing electromagnetic field will induce a current in the device, which will create a different voltage across the device. In the case of the EXC-14CP221U, this induced current will be filtered through the core and windings of the device, reducing the amount of high frequency noise. The core and windings create a high inductance in the common-mode direction and a low inductance in the differential-mode direction, which is essential for noise reduction.

In conclusion, the EXC-14CP221U is a high quality, low noise common mode choke designed to reduce EMI in various types of systems. Its ferrite core and two windings of conductive wire work together to create a high common mode inductance and low differential mode inductance, allowing for better filtering of induced currents. It is typically used at the input and output of power electronic and communication systems and provides a high level of EMI noise rejection.

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