Patent ID: 6500316
Filing Date: 2002-12-31
Classification: H01F,Y10S

Abstract:
An apparatus for rotary cathode electroplating comprising:a head assembly; a substrate/thief assembly configured to hold a substrate, said substrate/thief assembly having a thieving ring including a plurality of individually chargeable segments, said substrate/thief assembly further having at least one secondary induction assembly including a secondary core and a secondary winding; a motor which is coupled to said substrate/thief assembly such that said substrate/thief assembly is driven to rotate relative to said head assembly by the action of said motor; a controller which is adapted to direct electrical charge to each of said plurality of individually chargeable segments of said thieving ring; an electrical storage device which is adapted to store electrical energy which is to be supplied to said controller; at least one charging apparatus which induces a magnetic flux in said at least one secondary induction assembly, such that an alternating current is induced in said secondary winding of said secondary induction assembly; and a converter which is adapted to convert said induced alternating current to direct current, which is then stored on said electrical storage device.