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Miniature coils on core with printed circuit

  • US 7,924,000 B2
  • Filed: 08/30/2010
  • Issued: 04/12/2011
  • Est. Priority Date: 01/06/2006
  • Status: Active Grant
First Claim
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1. A sensor, comprising:

  • a circuit substrate;

    a coil assembly, which is mounted on the circuit substrate, and which comprises;

    a core;

    printed circuit traces overlaid on the core, the traces comprising terminals, which are coupled to the circuit substrate; and

    two or more wires wrapped around the core in different, respective directions so as to define two or more coils, the wires having respective ends, which are coupled to the printed circuit traces, so as to connect the wires through the traces to the terminals; and

    a processing circuit, which is coupled to the circuit substrate so as to receive signals produced by the coil assembly in response to a magnetic field, and which is adapted to process the signals so as to generate data with respect to the magnetic field, wherein the data generated by the processing circuit are indicative of a position of the sensor.

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