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The power loss analysis of SMD power inductors is one of essential subjects in the development of SMD power inductors and their application into switching power supply circuits. However such developments have been done without power loss analysis due to its difficulties, which should be attributed to the problems such as calculation of effective core parameters and consideration of leakage flux, coupling...
Almost all digital equipment has electromagnetic interference (EMI) suppression ferrite cores to encircle cables, such as mains and peripheral cables. However, their EMI suppression capability is hardly evaluated from the impedance characteristics provided by the manufacturers. Hence, this paper proposes to characterize the ferrite cores in terms of the insertion loss and the reflection coefficient...
Small-sized ferrite cores have commonly been attached to the mains and peripheral cables of electronic devices, but it is hardly known how effectively the cores can suppress EMI currents and how to use the cores in practical application. Hence, theoretical and experimental analyses are carried out to develop an appropriate method for evaluating the EMI suppression capability of the ferrite cores used...
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