A power line filter is a type of passive component that creates an electronic filter to deliver appropriate frequency characteristics to electrical circuits. Power line filters connect the electronic device with an external line to reduce conducted frequencies like radio frequencies (RFI) or electromagnetic interference (EMI) between the equipment and the connecting power line. This prevents any degradation in the circuit's performance.
What are power line filters used for
Power line filters are useful in emission reduction in switched-mode power supplies or machinery producing steam, smoke or carbon dioxide. These filters are also necessary to decrease levels of electromagnetic interference which may cause undesired behaviour in radio transmission equipment and nuclear operations.
Types of power line filters
Power line filters can be used in single phase, three phase or DC (direct current) power applications, depending on the equipment in question. Electric and electronic devices like switched-mode power supplies, motor controllers, induction cooking and food service equipment make use of single phase filters. Three phase filters are common in frequency converters, motor drives, and machine tools. DC filters are typically found in cell phones, flat screen TVs and electric or hybrid vehicles.
Description:
Schaffner performance FN 343 EMI Filters are compact
in design for easy and fast chassis mounting. Single-phase filters provide an excellentAttenuation performance, based on chokes with high saturation and excellent thermal behaviour. Also feature integrated earth line choke. Rated currents ...
Description:
Single phase B841113H series offer's low leakage current.
It also has an easy to install compact design. It is used in many applications, such as switched mode power supplies for telecom/data systems. SIFI-H for very high insertion lossTerminals; (case B) ...
Description:
High attenuation over a wider frequency range from
high inductance valuesSIFI-E range gives a better overall attenuation performance at frequencies below 150kHzIdeally suited for switch mode power supplies in industrial electronic equipmentLow leakage currentAluminium case.
Description:
Schaffner FN332Z series RFI filters are designed for
easy and fast access chassis mounting. These filters have high saturation resistance and high inductivity.are also available with integrated surgePulse protection to safeguard sensitive electrical equipment. Maximum continuous operating voltage 250 V ...
