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This paper proposes the input impedance measurement technique of a switching mode power supply (SMPS) by the insertion loss approach. The insertion loss approach with the assumption condition is described. The common mode and the differential mode impedance are the key parameters which can be used to design the EMI filter effectively.
This paper presents the technique of cancellation the parasitic capacitance of inductor using mutual capacitance. The inductor frequency can be changed to capacitor at high frequency, which makes the filter to low efficiently. The mutual capacitance can be emulated using two small extra capacitors, which is connected with circuit. The experiments using power supply to test the efficiency of parasitic...
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