Patent ID: 8942018
Filing Date: 2015-01-27
Classification: H02M,Y02B

Abstract:
1. An energy receiving circuit for use in an inductive power transfer system, comprising: a secondary winding; a capacitor coupled in series to said secondary winding to form a current-source or a voltage-source when placed in physical proximity to a primary winding, said current- or voltage-source being coupled between a first input node and second input node a first circuit element coupled between the first input node and a first output node; a second circuit element coupled between the second input node and the first output node; a third circuit element coupled between a second output node and the first input node, the second and third circuit elements forming a first group; a fourth circuit element coupled between the second output node and the second input node, the first and fourth circuit elements forming a second group; an output capacitor coupled between the first and second output nodes; a rectified output coupled in parallel with the output capacitor; wherein a plurality of the circuit elements, including one of the circuit elements from each of the groups, is a self-driven current-controlled active switch comprising a sensing resistor coupled between one of the input nodes and one of the output nodes; and wherein the other circuit element in each group is a voltage-controlled active switch.