ELF-15N015A

Common mode chokes, or CMCs, are static inductor filters commonly used to reduce electromagnetic interference (EMI) in electronic circuits. They are used in many applications, such as power supplies, telecommunication systems, automotive electronics, and other low-frequency equipment. The ELF-15N015A is a popular CMC with an operating frequency of up to 15MHz. This article will discuss the application field of this device, and explain its working principle.

Application Field

ELF-15N015A CMCs can be used in a range of different circuits and systems. In DC power systems, they can be used to reduce the amount of noise that is created during the operation of power supplies. They are also used in switching power supplies, where they serve to reduce the EMI level generated by the switching components. In any system that employs multiple signal lines, these CMCs can be used to reduce common-mode noise that may cause interference between lines. They are also commonly used in high-frequency communication systems, such as those providing cellular services, to reduce the noise generated by transmitters and receivers.

Working Principle

CMCs are basically coil-based filters. They work by blocking high-frequency currents created by EMI, and allowing only low DC currents to pass. The blockage of high-frequency currents protects against interference, which could cause the circuit to malfunction. ELF-15N015A CMCs employ several coils connected in series to provide a larger inductance. This increases the effectiveness of the filtering and allows for a wider range of frequencies to be blocked. The device also contains high-frequency capacitors to further reduce EMI.

In conclusion, ELF-15N015A CMCs are static inductor filters. These devices are commonly used to reduce the level of electromagnetic interference in multiple types of circuits and systems, such as communication systems, switching power supplies, and DC power systems. They work by blocking high-frequency currents created by EMI, while allowing only low DC current through, thus protecting against interference.