EXC-28CE121U Filters

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Common Mode Chokes, also known as common mode filters or common mode inductors, are specialized electrical components designed to reduce interference between low frequency signals. EXC-28CE121U is a type of Common Mode Choke. It was developed for use in the telecommunication, medical, and consumer electronics industries where stereo audio signals are transferred between different devices. It has a rated current of 28A, a frequency range from 20kHz to 200kHz, and a working temperature range from -40℃ to +125℃.

Common Mode Chokes are designed to protect against the interference of the symmetrical voltage, voltage unbalance and EM noise that are often found in stereo audio signals. They are typically used to optimize signal transmission and minimize the effects of external electromagnetic interference (EMI) on a system. The EXC-28CE121U features a built-in filter, which helps to reduce electromagnetic interference (EMI) and improve signal integrity.

The primary function of the EXC-28CE121U is to filter the electromagnetic interference from outside sources, such as power supplies, AC/DC motors, and more. The EXC-28CE121U is designed to block the electromagnetic interference within the circuit, while allowing the stereo audio signals to pass through. This prevents the interference from disrupting the circuit and improves signal integrity. The filter features metal oxide varistors (MOVs) to absorb the noise.

The construction of EXC-28CE121U consists of a ferrite core with multiple windings. The windings act as an inductor, which is used to store the electrical energy. As the electrical energy is stored and released in the windings, it produces a counter-balancing effect on the circuit, which reduces the interference. This reduces the amount of noise that is transferred into the other components or circuits of the device.

The EXC-28CE121U also has a high-frequency shield for shielding against external electromagnetic interference (EMI). The shield helps to reduce the amount of interference that can enter the device. The shield is constructed using a laminate of thin layers of metal interspersed with thin layers of dielectric material. The combination of these two components helps to reduce the amount of interference that is transferred.

In addition to the high-frequency shield, EXC-28CE121U also has a built-in protection circuit. The protection circuit helps to protect the device from damage caused by high-voltage spikes and other electrical disturbances. The protection circuit is designed to sense when excessive voltage is present in the circuit and will shut the device off to prevent damage from occurring.

EXC-28CE121U is an ideal choice for a wide range of applications including medical equipment, telecommunications, consumer electronics, and more. Its low profile design and small size make it ideal for use in compact devices. Its superior filtering capabilities make it an ideal choice for applications that require stringent EMI requirements. It is also a great choice for applications that require high power handling capability and reliability.

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