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US 2006/0038646 A1Published application
Precise multi-pole magnetic component and manufacturing method thereof
AssigneeIndustrial Technology Research Institute
InventorsKuo-Chi Chiu, Der-Ray Huang, Han-Ping Shieh
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Abstract
A method is proposed to manufacture a precise multi-pole magnetic component for using in magnetic encoders. A special layout of the circuit pattern is designed and formed on a printed circuit board (PCB). Alternate and regular magnetic field is induced according to Ampere's law after a current flowing through the circuit on the PCB. The multi-pole magnetic component with fine magnetic pole pitch is achieved by forming the high-density circuit patterns on a substrate using the PCB technology.
Claims6
A precise multi-pole magnetic component comprising:
- a substrate;
- and
- a plurality of layers of circuits formed on the surface of the substrate;
- wherein each layer of the circuit is separated from another by an insulating layer;
- the circuits on different layers are connected into a single circuit by drilling holes and filling them with soldering tin;
- the current input and output terminals on the top layer are reserved for connecting to a current source;
- each layer of the circuit has a meander structure for providing a current to flow in opposite directions to produce an alternate magnetic pole distribution;
- and the magnetic field distribution of each layer of the circuit is arranged to stack with enhancing configuration.
5 more elements
Dependencies are inferred from the claim text.