There is disclosed a system and method for transferring power without requiring
direct electrical conductive contacts. There is provided a primary unit having
a power supply and a substantially laminar charging surface having at least one
conductor that generates an electromagnetic field when a current flows therethrough
and having an charging area defined within a perimeter of the surface, the at least
one conductor being arranged such that electromagnetic field lines generated by
the at least one conductor are substantially parallel to the plane of the surface
or at least subtend an angle of 45 or less to the surface within the charging
area; and at least one secondary device including at least one conductor that may
be wound about a core. Because the electromagnetic field is spread over the charging
area and is generally parallel or near-parallel thereto, coupling with flat secondary
devices such as mobile telephones and the like is significantly improved in various
orientations thereof.