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:
Two stage RFI filters which provide very high
attenuation in both common and differential mode. Designed specifically for sensitive electronic equipment and applications where interference is frequent and very intensive. A capacitor discharge resistor is included within the design.Electrical connections ...
Description:
This series is a new development, that features
a highly compact construction. Two-line filter for electrical systems in lifts, conveyor belts, pumps, ventilation systems and power supply unitsVery high insertion lossOptimized for very long motor cables under full loadLow leakage ...
Description:
EPCOS B84142-Bx-R Series Power line filters for convertors
and power electronics. These 2 line filters feature a high insertion loss due to its two stage construction, easy to install and has optimised leakage current. Rated voltage VR: 250 V AC/DC.Rated ...
Description:
High Performance K Series RFI Line Filters for
SMPS Emission Control. Current Rating from 30 to 600ADelta or WYE configuration for 3-Phase productsSafety agency approvals - see chart for detailsVoltage ratings up to 250V for single phase productsVoltage ratings up ...
