DLW5BSM191SQ2L

Common mode chokes, such as the DLW5BSM191SQ2L, are designed to block common mode noise on a power line. This type of noise is most often generated by the power supply of an electronic device, and can be emitted by AC power cables or other power cables inside the device. Common mode noise can interfere with digital signals and cause errors or even damage to electronic components. By blocking the common mode noise, common mode chokes reduce signal interference and ensure reliable operations of the device.

The DLW5BSM191SQ2L common mode choke is constructed from a two-layer winding and is designed to achieve a high common mode impedance and low differential mode impedance. It has a copper wire core in which two copper windings, the primary winding and the secondary winding, are wound in opposite directions. The primary winding carries DC power, whereas the secondary winding is used to carry AC signal. The two windings are magnetically coupled, meaning that any current in the primary winding generates a voltage in the secondary winding.

In order to work as intended, the common mode choke must be placed correctly in an electrical circuit. It should be placed in the line between a power source and the load, so as to block any noise from the power source from reaching the load. The choke should also be placed as close to the load as possible, so as to reduce the propagation of any noise from the load. It is important to note that the DLW5BSM191SQ2L common mode choke should never be used as an isolation transformer.

The primary winding of the common mode choke is placed in the active power line, and the secondary winding is placed in the ground or ground shield. As the active power line carries voltage, current passes through the winding. The magnetic field generated by this current induces a voltage in the secondary winding, which acts as a counter-voltage and reduces the differential mode current passing through the power line. This reduces the effect of common mode noise on the device.

Common mode chokes, such as the DLW5BSM191SQ2L, are used in many types of electronic circuits, such as power supplies, motor drives, transformers, and inverters, to minimise common mode noise and ensure reliable operations. The use of the DLW5BSM191SQ2L common mode choke can help reduce signal interference, prevent errors, and protect the circuit components from damage, making it an important component for many applications.