PLY17BS2921R2A2B

Common Mode Chokes

Common mode chokes are components that are used to reduce common mode current in electrical circuitry. They are usually part of a larger system or product, such as power supplies, motor controllers, drives, and consumer electronics. Generally, when common mode noise exceeds the bounds of normal operation, these components are used to reduce the noise and prevent malfunction.

PLY17BS2921R2A2B Application Field and Working Principle

The PLY17BS2921R2A2B common mode choke is a bifilar wound winding that is designed for use in switch mode power supplies and industrial applications that require common mode noise suppression. This choke is designed to have a very low resistance, allowing it to effectively suppress common mode noise. The choke also has a wide operating frequency range, so it can be used in various applications. The inductance rating of this choke is 1.2mH, with a DC resistance of less than 5 ohms.

The working principle of this common mode choke is based on the concept of impedance. When current passes through an impedance, such as an inductor, it causes an opposing field to be formed. This opposing field is responsible for rejecting the noise and reducing the current that passes through it. By using an inductor in this way, common mode noise is significantly reduced and the system functions properly.

The PLY17BS2921R2A2B is a double choked model choke which means it has two separate windings, one for common mode noise and one for differential mode noise. This is advantageous for applications where noise across two signal lines must be suppressed, as the separate windings allow each to operate at different impedance levels. This can significantly improve the performance of the system and reduce the risk of malfunction.

The PLY17BS2921R2A2B also has a very low DC resistance, which allows it to effectively suppress common mode interference. Additionally, it offers a wide operating frequency range and can be used for suppressing noise from various sources. This makes it suitable for applications that require high levels of performance and reliability.

In summary, the PLY17BS2921R2A2B is a high performance, low-cost common mode choke that is ideal for use in a variety of applications. Its double choked design allows for effective noise suppression across two signal lines, while its low DC resistance allows it to effectively reduce common mode interference. Furthermore, its wide operating frequency range makes it suitable for a variety of applications requiring high levels of performance and reliability.