Engineering >> Electrical EngineeringMutual Inductive Chargingby William Wendt
Submitted : Fall 2013 Inductive charging circuits are a growing technology that appears in modern mobile devices for “wireless” charging. Magnetic fields are produced by passing electrical current through coils of wire in which a second coil of wire, located above the source coil, induces a current in the device. This idea is much like that of a transformer but without the iron or magnet. Amperes laws states that the integrated magnetic field around a closed loop of wire is directly proportional to the current passing through the loop. Using Ampere’s Law we investigate the number of loops necessary to produce the correct magnetic field that is needed to induce a current in the loops of wires located inside the mobile device. Upon investigation it was found that creating such a device is easy to do and the amount of turns needed in the source coil was less than expected. Therefore it is perceivable to make a compact wireless charging device capable of charging an array of devices with different charging needs. Related Links:
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