CPC G01R 31/002 (2013.01) | 16 Claims |
1. A sensing circuit for an electromagnetic interference suppression circuit, comprising:
an input adapted to be connected on a power line and in series between a load and a shunt circuit connected across power lines between a power source and the load; and
an output operatively coupled with the input, and adapted to provide a signal (Vs) associated with an electromagnetic interference signal (Vn) generated by or at the load and arranged to be experienced by the shunt circuit for determining a suppression signal (Vn′) for reducing, or substantially eliminating, the electromagnetic interference signal (Vn);
wherein the sensing circuit comprises:
a resonator circuit; and
a transformer connected in parallel with the resonator circuit;
wherein one of the transformer and the resonator circuit provides the input and the other one of the transformer and the resonator circuit provides the output.
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