ELF-19N008A

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Common mode chokes, such as the ELF-19N008A, are electrical devices that reduce levels of common mode noise in a circuit. They are typically used in applications where differential mode signals need to be isolated from one another, such as between two electronic components of a system or within a high frequency switching power supplies. Common mode chokes are often designed to operate over a wide spectrum of frequencies and temperatures and can be used to suppress noise generated from electromagnetic interference (EMI).

The ELF-19N008A common mode choke is a Toroid inductor used to reduce level of common mode noises in a circuit and is specially designed to operate in harsh industrial and automotive applications. It has an inductance of 19uH and an impedance of 1600mohm at 100KHz and 100mA. It is constructed with an easy-to-use DIN rail mounting system, and is rated to operate at temperatures up to 125°C. Its EMI suppression capability makes it ideal for eliminating noise from sources like LED lighting, motors, and power supplies.

The operating principle of a common mode choke is based on the concept of mutual inductance. A common mode choke consists of two or more windings of an alternating-current (AC) electrical current that create a magnetic field. The two windings are designed so that when an AC current flows through one winding, the induced voltage in the other winding will cause the current to flow in the direction opposite to that of the original one. This process is known as mutual inductance and results in a reduction of common mode noise levels in the circuit.

In operation, the choke is usually placed before one or a set of signal lines in the circuit, so as to block out any incoming noise. As the common mode choke will also block the signal from passing through, it should be combined with a circuit which can provide isolation from the blocking effect. The Toroid core of the ELF-19N008A choke helps provide a high isolation efficiency, allowing it to suppress noise effectively in even the harshest of environments.

Common mode chokes are an important component of any circuit where differential mode signals need to be isolated and electromagnetic interference (EMI) must be suppressed. For example, when unwanted electrical noise is produced from LED lighting, motors, and other sources of EMI, common mode chokes can reduce the noise levels in the circuit. The ELF-19N008A common mode choke is designed with an easy-to-use DIN rail mounting system and is an ideal device for suppressing common mode noise in a variety of industrial and automotive applications.

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