Active EMC filter for medical applications

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

Reexamination Certificate

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Reexamination Certificate

active

07983746

ABSTRACT:
An active EMC filter for medical applications allows reducing the leakage current normally induced by large phase-to-ground capacitances. The filter may comprise an active shunt module or an impedance converter or a correction signal generator and is suitable both for three-phase and single-phase applications.

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Quian Zhaoming et al., “Status of electromagnetic compatibility research in power electronics,” The Third International Power Electronics and Motion Control Conference, Aug. 15-18, 2000, IEEE, vol. 1, Aug. 15, 2000, pp. 46-57.
I. Takahashi et al., “Active EMI filter for switching noise of high frequency inverters,” Power Conversion Conference, Nagaoka, Japan, Aug. 3-6, 1997, IEEE, vol. 1, Aug. 3, 1997, pp. 331-334.

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