| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC-DC converter which has a simple compact circuit configuration and can stably obtain a plurality of DC output voltages. SOLUTION: A DC-DC converter obtains two DC output voltages VOUT1 and VOUT2 from a single DC input voltage VIN by means of circuits A and B. The circuit A, which obtains the first DC output voltage VOUT1, is constituted of a transistor 2 which switches the DC input voltage VIN, a control circuit 3 which controls the on/off ratio of the transistor 2, primary windings N1 of a transformer 4, and a rectifier and filter circuit 5. A circuit B which obtains the second DC output voltage VOUT2 is constituted of secondary windings N2 of the transformer 4 and a rectifier and filter circuit 8.
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