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Full bridge phase displaced resonant transition circuit for obtaining constant resonant transition current from 0.degree. phase angle to 180.degree. phase angle

  • US 5,563,775 A
  • Filed: 06/16/1994
  • Issued: 10/08/1996
  • Est. Priority Date: 06/16/1994
  • Status: Expired due to Term
First Claim
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1. A phase displaced, resonant transition circuit maintaining constant resonant transition current from 0°

  • phase angle to 180°

    phase angle, the circuit comprising;

    a full bridge circuit having a first and second switch connected in series forming a first leg, and a third and fourth switch connected in series forming a second leg, said first and second legs connected in parallel with one another and in parallel with a power supply;

    a primary winding, a first end of the primary winding connected to a junction of the first and second switches and a second end of the primary winding connected to a junction of the third and fourth switches;

    a secondary winding inductively coupled to the primary winding, the secondary winding connected to a rectifying circuit supplying a controllable voltage to a load; and

    a center tap leg including a resonant inductance and a capacitance, the inductance means connected at a first end in a center-tap arrangement to the primary winding, a second end of the resonant inductance connected to a first end of the capacitance, and a second end of the capacitance connected to circuit common.

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