The filter is a filter circuit capacitor, inductor and resistor composed of a passive two-way network, one end of the power supply, the other end of the load. The principle is a power supply filter - impedance adaptation network: input power filter, the impedance of the output side of the power supply adapter and a load side of the larger, the more effective attenuation of electromagnetic interference. Frequency filter the power line can be a specific frequency or a frequency outside the frequency effectively filtered to obtain a specific frequency of the power signal, or a signal of a specific frequency to eliminate the power supply after.
Filter
Filter
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