EH24-2.0-02-2M5

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Common Mode Chokes

A common mode choke, also known as a line filter, is a device used to reduce both radiated and conducted electromagnetic interference (EMI) from various sources such as AC mains electrical lines, data lines, motors, etc. It usually consists of a combination of inductors and capacitors. Common mode chokes are designed to pass differential mode currents while blocking common mode currents.

EH24-2.0-02-2M5 Application Field and Working Principle

The EH24-2.0-02-2M5 common mode filter is suitable for use in the field of high frequency voltage conversion and AC power supply, among other power supplies. It is used to reduce the common mode interference signals on the power line.

Working Principle: The EH24-2.0-02-2M5 common mode filter mainly uses the concept of “balanced currents”. When a noise signal passes through the power line, it takes two paths. First, it passes through one part of the filter element and then goes back from the other part. Then, the two current paths cancel each other out, thus reducing the noise signals.

The EH24-2.0-02-2M5 common mode filter consists of two inductors, two capacitors, and one resistor. Working in combination, the capacitors and resistor form an AC current filter that blocks high-frequency common-mode interference from entering the DC power input. Meanwhile, the two inductors work together to form a low-impedance path that limits the transmission of common-mode interference to other lines or circuits.

The inductors of the EH24-2.0-02-2M5 common mode filter are wound in opposite directions to form a hybrid coil. This hybrid coil ensures that the two windings of the inductors have the same current. When a current flows across the coil, a counter- electromotive force is generated, which reduces the amplitude of the current in the circuit. This is how the EH24-2.0-02-2M5 line filter blocks noise signals.

In addition, the EH24-2.0-02-2M5 common mode filter also includes a resistor connected to both the inductors, which provides additional protection against high-frequency noise. The resistor should be chosen to have a resistance value that is low enough to be effective but high enough to not reduce the power of the filter.

The two capacitors of the EH24-2.0-02-2M5 help to suppress noise on the power line by acting as a barrier between the power and the noise source. The capacitors will absorb the energy of any high-frequency noise signals, thus reducing their amplitude. The capacitors should be chosen with a capacitance value that is high enough to block effectively and low enough to not interfere with the power supply.

In summary, the EH24-2.0-02-2M5 common mode filter is a very effective device for reducing the amount of noise that enters a powered device. It consists of two inductors, two capacitors, and one resistor, which work together to stop the transmission of common mode interference signals.

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