Patent ID: 9225312
Filing Date: 2015-12-29
Classification: H01F,H02J,H02M,H03H

Abstract:
1. An electrical conduit configured to convey power conductively by way of a current from a power source to a field generator of an inductive power transmitter, the field generator being operable to generate a fluctuating electromagnetic field having a fundamental frequency for transmitting electrical power to a device by electromagnetic induction, the conduit comprising: at least one impedance element connected along an electrical path of the conduit configured to carry said current, the at least one impedance element having a high enough impedance at the fundamental frequency such that, in use, electromagnetic noise experienced at the power source is substantially suppressed, such electromagnetic noise arising from coupling between the electromagnetic field and a circuit having said path and linking the power source to the transmitter, wherein the at least one impedance element includes first and second inductors, wherein a voltage induced by the field generator in the first inductor opposes a voltage induced by the field generator in the second inductor.