PL8203NL

Common mode chokes are devices that are designed to reduce common mode electromagnetic interference (EMI) by providing a high impedance in the common mode band and a low impedance in the differential mode band. The PL8203NL is a common mode choke specifically designed to reduce the radiated emissions from equipment. It is capable of providing up to 110 dB of common mode attenuation, making it an ideal solution for applications where EMI reduction is paramount.

The PL8203NL is constructed with two ferrite cores, each containing two thick conductors wound in opposite directions to provide a balanced filter. This enables the choke to operate over a wide range of frequencies and has excellent resistance to common mode currents. The design of the PL8203NL also ensures minimal insertion and return loss for longer transmission lines.

When looking at the application field for the PL8203NL, it is ideal for EMI suppression in power lines, communication lines and other low-voltage AC/DC circuits. It is also suitable for suppressing high-frequency transients in automotive and switching power supplies. It can be used in power and data transmission applications, as well as for EMI filtering of video and audio equipment.

The working principle of the PL8203NL is based on the two core inductors that work together to provide a low resistance to the differential mode current. This helps reduce the magnitudeand frequency of the differential mode noise, which in turn reduces the amount of common mode noise that radiates from the source. In addition, the bifilar winding of the inductors provides an extremely low negative impedance over a wide frequency range, allowing the choke to attenuate common mode noise even in the presence of strong differential mode signals.

The PL8203NL is a great device to use when looking to reduce EMI from appliances, video and audio equipment, power supplies, and communication equipment. Its balanced filter design makes it capable of operating over a wide frequency range and its high common mode attenuation ensures that any emissions generated by the source will be kept within the accepted safety limits.