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Transformer device

  • US 5,579,202 A
  • Filed: 01/24/1995
  • Issued: 11/26/1996
  • Est. Priority Date: 02/07/1994
  • Status: Expired due to Term
First Claim
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1. A transformer device, said transformer device having a primary side and a secondary side and being capable of supplying a high-frequency, pulsating DC voltage on said secondary side, said transformer device being an air core type having no core of ferromagnetic material, said transformer device comprising:

  • a first winding and a second winding, said windings being bifilar-wound in a reciprocal phase relationship of 180°

    , said first winding and said second winding each having a beginning portion and an end portion,a coupling of said first and second windings, said coupling being in series and including a common junction point of said end portion of said first winding and said beginning portion of said second winding,a voltage supply on said primary side, said voltage supply being controlled by a time-set or time-variable power control signal at said beginning portion of said first winding and at said end portion of said second winding, said voltage supply providing a DC voltage to said common junction point;

    two capacitors positioned on said primary side, one of said capacitors being coupled in parallel to said first winding and the other of said capacitors being coupled in parallel to said second winding so as to form two oscillatory circuits;

    a first insulating layer positioned around said primary side;

    an electrostatic screen positioned around said first insulating layer, said electrostatic screen being capable of being connected to a ground connection;

    a second insulating layer positioned around said electrostatic screen;

    a multi-layered secondary coil on said secondary side, said secondary coil comprising layers wound around said second insulating layer, each wound layer of said secondary coil being enveloped by an insulating material; and

    wherein said pulsating DC voltage on said secondary side has a frequency which is twice the frequency of said power control signal.

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