Conductive electromagnetic equipment failure removal active common mode EMI filter for (ActiveCommonModeEMIFilterforEliminatingConductedElectromagneticinterference)

摘要

The present invention conductivity electromagnetic interference eliminating for the active common mode electromagnetic interference emi filter and especially this invention relates to a amplifier as the power source of the system operation voltage not related with the special power source by using a low frequency in an insulating and high frequency in closed circuit structure for the operating the coupling capacitor by leakage current on the inside is circulating in a low voltage amplifier element can be used for . As a result filter and higher than a circuit element is capable of being used and any dc-end voltage and the size of the irrelevantly can be applied as . In the present invention a current detecting current compensation system while using a conventional technique of active emi filter of an amplifier by the p-n-p npn transistor and all the whole dc voltage is bear if not generated from the problem that is high withstand voltage transistor is used to be obliged to solve the problem to solve the problem can be .