CMT-8118-B

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Common Mode Chokes

Common Mode Chokes (CMCs), also known as common mode inductors, are one of the most important passive components in electronic power storage. They are designed to prevent interference of common mode signals in power networks. CMT-8118-B is a type of CMC, with unique features and advantages.

CMT-8118-B application field

The CMT-8118-B, developed by CMCTECH Company, is a high insulation common mode choke dedicated to high-efficiency LED/solar LED power systems. It has a similar size, weight and shape as the conventional CMC, containing more windings and cores for the purpose of providing better inductance and filtering performance.

The CMT-8118-B is widely used in modern LED lighting systems, especially in street lamps, residential area lights, landscape lights and tunnel lights. The choke also serves as an important component in other applications such as power supplies, smart meters and automation systems.

CMT-8118-B Working Principle

The CMT-8118-B is a three-section common mode choke which consists of two transformer parts and one inductive part. The inductive part has two windings and the transformer part has three windings. The connections of the two sets of toroidal cores are symmetrical, two parallel up and down, two series, and their sequences are directional. In this way, the interference of a common mode is filtered and suppressed.

The working principle of CMT-8118-B is that the differential mode signal is filtered into the transformer part of the choke, and then the transformer part is connected with the inductor part. The voltage across the core is filtered by the inductor, so that the common mode interference signal is cancelled and the load current is also reduced. The inductor decreases the inductance and resistance of the magnetic core, resulting in more rapid dissipation of the interference source.

The CMT-8118-B achieves superior suppression performance and very low DC resistance due to its electrical parameters, which allows it to be applicable for outdoor/garden lighting applications. It also has a wide temperature range from -25℃ to 85℃ and can be used in humid and corrosive environments.

Conclusion

CMT-8118-B is a type of common mode choke which offers outstanding performance in LED power systems. Due to its superior suppression performance and wide temperature range, it has been used in many applications such as street lamps, residential area lights and tunnel lights. Its working principle is to filter common mode interference signals and reduce load current, thus ensuring the smooth operation of the system.

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