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One switch multi-phase modulator

  • US 5,406,186 A
  • Filed: 01/25/1994
  • Issued: 04/11/1995
  • Est. Priority Date: 01/25/1994
  • Status: Expired due to Fees
First Claim
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1. An electrical apparatus comprising:

  • a bridge circuit having a plurality of rectifier legs electrically coupled in parallel, said parallel connection defining a top node and a bottom node, each of said rectifier legs comprising a first and a second rectifier coupled in series, said series connection of said rectifiers defining an input node therebetween;

    a switch having a control input, and a power input switchably coupled to a power output, said power input being coupled to said top node, and said power output being coupled to said bottom node, said switch coupled in parallel with said rectifier legs of said bridge circuit thereby;

    a controller having a control output coupled to said control input of said switch for regulating the opening and closing of said switch, said switch electrically decoupling and coupling said top note from/to said bottom node thereby; and

    an electrical device having a plurality of windings, said windings having a line and a neutral terminal, configured in a quasi-wye configuration having a disassociated neutral, each of said neutral terminals of said windings being coupled to one of said input nodes of said rectifier legs.

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