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1. (WO2018084722) INDUCTIVE POWER TRANSFER

Pub. No.:    WO/2018/084722    International Application No.:    PCT/NZ2017/050143
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Thu Nov 02 00:59:59 CET 2017
IPC: H02J 50/12
Applicants: APPLE INC
Inventors: WALTON, Robert
Title: INDUCTIVE POWER TRANSFER
Abstract:
An IPT receiver is controlled to vary its frequency of operation to hop between a first frequency below the transmitter frequency and a second frequency above the transmitter frequency while measuring the power transfer at both first and second frequencies. Embodiments may track variations in transmitter frequency.