surface where the electronic loads are placed in preferred embodiments of this invention it is proposed to energize only one transmitter winding for each electronic load or at least only those covered by the electronic load this offers the following advantages a since the transmitter winding is fully covered by the receiver winding with electromagnetic shielding that should extend at least for the same dimensions as the receiver winding and preferably should extend beyond the receiver winding this avoids unnecessary electromagnetic radiation from the charging surface that is not covered by the electronic load this reduces the generation of possible electromagnetic interference emi b unnecessary switching and conduction power losses are avoided or at least mitigated in transmitter windings that play no part in energy transfer this improves the overall energy efficiency of the entire charging system c the possibility of human exposure to the transmitted energy from the charging pad due to physical contacts on the charging surface of the charging pad is either eliminated or at least reduced this feature helps meeting the u201c ieee c95 1 standard for safety levels with respect to human exposure to radio frequency electromagnetic fields 3 khz to 300 ghz u201d in order to select the appropriate transmitter windings for localized charging suitable power inverter circuits are required that can connect.