| 摘要 |
PROBLEM TO BE SOLVED: To divide sum-total charging voltage into each set capacitance voltage by starting a DC-DC power converter when the charging voltage is smaller than a smaller of prescribed values, and stopping the means when the charging voltage reaches the larger of prescribed values. SOLUTION: In the case of a DC-DC power converter provided with output transformer 1 having three output windings, one diode bridge connection type full-wave rectifying circuit 9 is connected to each output winding, and one power supply capacitor 10 is connected between both output terminals of each rectifying circuit 9. In addition, all the power supply capacitors 10 are connected in series, with their voltage directions being oriented in the same direction. Each rectifying circuit 9 supplies each output voltage of the transformer 1 to each capacitor after full-wave rectification by actuating transistors 2-5, etc., when a transistor 6 detects that the sum-total charging voltage is smaller than a smaller prescribed value and stopping the transistors 2-5, etc., when the charging voltage reaches a higher prescribed value. Therefore, the sum-total charging voltage can be divided into each capacitance voltage in a set state, irrespective of the waveform of the input voltage of the transformer 1.
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