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High voltage high frequency transformer

  • US 10,050,533 B2
  • Filed: 07/26/2016
  • Issued: 08/14/2018
  • Est. Priority Date: 07/26/2016
  • Status: Active Grant
First Claim
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1. A transformer comprising:

  • a core having a central arm and first and second outer arms on opposite sides of the central arm;

    a primary winding surrounding the central arm;

    a secondary winding surrounding the central arm;

    a primary winding shield surrounding the primary winding including a center tap connection connected to an output power connection;

    a secondary winding shield surrounding the secondary winding including a second center tap connection connected to a second output power connection;

    a DC-to-AC converter connected to the primary winding that includes a primary bias power supply, a primary conversion element and a primary controller;

    an AC-to-DC converter connected to the secondary winding;

    a sensor connected to an output of the AC-to-DC converter;

    a secondary bias power supply, wherein the secondary bias power supply is electrically connected to the secondary winding shield and the sensor, the secondary bias power supply, in operation, receives power from the secondary winding shield and provides power to the sensor; and

    a voltage regulator connected to the primary winding shield;

    wherein the primary bias power supply provides power to the primary controller in a first operational mode and the voltage regulator provides power to the controller in a second operational mode;

    a bias diode connected between an output of the primary bias power supply and the controller; and

    a regulator diode connected between an output of the voltage regulator and the controller;

    wherein the transformer operates in the first operational mode when an output voltage of the primary bias power supply exceeds an output voltage of the voltage regulator.

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