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Pulse transformer

  • US 10,229,780 B2
  • Filed: 03/25/2014
  • Issued: 03/12/2019
  • Est. Priority Date: 03/27/2013
  • Status: Active Grant
First Claim
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1. A pulse transformer, comprising:

  • a core, including a drum core and a plate core, the drum core having a winding core, a first flange provided at one end of the winding core in a first direction, and a second flange provided at the other end of the winding core in the first direction, the plate core being provided so as to contact the first flange and the second flange;

    a first terminal electrode, a second terminal electrode, and a second center tap which are provided in the first flange and arranged in a second direction perpendicular to the first direction;

    a third terminal electrode, a fourth terminal electrode, and a first center tap which are provided in the second flange and arranged in the second direction;

    a first wire wound around the winding core and having one end connected to the first terminal electrode and the other end connected to the first center tap;

    a second wire wound around the winding core and having one end connected to the second terminal electrode and the other end connected to the first center tap;

    a third wire wound around the winding core and having one end connected to the third terminal electrode and the other end connected to the second center tap; and

    a fourth wire wound around the winding core and having one end connected to the fourth terminal electrode and the other end connected to the second center tap,wherein a length of the core in the first direction and a length of the core in the second direction are substantially equal to each other, such that a planar shape of a mounting region of the pulse transformer is substantially square,wherein a length of the core in a third direction perpendicular to the first and second directions is smaller than the length of the core in the first and second directions,wherein the first to fourth terminal electrodes and first and second center taps are each formed as a terminal fitting fixed to the first or second flange, andwherein each of the first flange and the second flange has a first surface extending in the first and second directions, and a second surface extending in the second and third directions,the first surface has a lower area and an upper area protruding from the lower area, andeach of the terminal fittings has a first section covering the upper area of the first surface, a second section covering the lower area of the first surface, and a third section covering the second surface.

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