Vertical flat line common mode choke  

A vertical flat line common mode choke is a type of electronic component used in electronic circuits to filter out common mode noise. It consists of two coils wound on a magnetic core, with the windings arranged in a vertical flat line configuration. The choke is designed to block common mode noise, which is unwanted electrical noise that appears on both signal lines in a circuit. The vertical flat line configuration of the coils provides a high level of common mode rejection, as the magnetic fields generated by the coils cancel out the common mode noise. This helps to improve the signal quality and reduce interference in the circuit. The choke is often used in applications such as power supplies, motor drives, and communication systems, where common mode noise can be a problem.