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TRANSFORMERLESS POWER SUPPLY

  • US 3,602,795 A
  • Filed: 10/16/1969
  • Issued: 08/31/1971
  • Est. Priority Date: 10/16/1969
  • Status: Expired due to Term
First Claim
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1. In a system including means for converting a high voltage input at a pair of input terminals to a lower voltage output at a pair of output terminals, a circuit comprising;

  • a. a plurality of stages each including a capacitor and first and second current control elements said first and second control elements being a diode and a transistor, respectively, b. the first current control element and capacitor for each stage being connected together in series in a first circuit for each stage and the first circuits for all the stages being connected together in series in a charging circuit between said input terminals, c. the second current control element and capacitor for each stage being connected in series in a second circuit for each stage and all of said second circuits being connected in parallel in a discharging circuit between said first and second output terminals, d. and said first and second current control elements in each of said stages being interconnected so that when one is conducting the other is nonconducting said diode for each stage being connected between the base and emitter of the transistor for that stage to bias the transistor off when the diode is conducting.

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