Power Filter There are many terminologies, like power supply EMI filters, EMI filter or the like. Although it is called without the same, but the usage, the working principle is the same.
Power filter is a passive two-way network, one end of which is the power, and the other end is the load. Power filter is a principle - impedance adaptation network: Power filter input impedance adapter output side of the power supply and the load side of the greater attenuation of electromagnetic interference more effective.
Able to supply power filter specific frequencies frequencies effectively filter out electrical equipment, it is one of the elements necessary now many electronics manufacturers.