| 摘要 |
PROBLEM TO BE SOLVED: To enhance the accuracy of constant output voltage control in a multiple output direct current/direct current converter without increase in the size of a transformer or saturable reactors. SOLUTION: A direct-current power supply 1, a semiconductor switch element 21, transformer primary winding 31, and a capacitor 4 are connected in series, and a parallel circuit of a second semiconductor switch element 22 and a capacitor 5 is connected in parallel between the transformer primary winding 31 and the capacitor 4. Transformer secondary windings 32a and 33a are provided with output circuits comprising the saturable reactors 91a and 92a, diodes 101a and 102a, smoothing capacitors 81 and 82, output voltage detection and adjustment circuits 121 and 122, magnetic flux control circuits 131 and 132, and reset diodes 111a and 112a for a plurality of outputs (two circuits in the figure) so that the size of the transformer 3 or the saturable reactors 91a and 92a will not be increased.
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