| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive DC-DC converter with a simple circuit structure, capable of stably outputting output voltage against fluctuations in input voltage. SOLUTION: An output voltage detection circuit 19 is constituted of a rectification smoothing circuit consisting of a rectification circuit including a rectification element serially connected to a tertiary coil 33 of a transformer 30, and a commutation circuit including a commutation element and indirectly detecting the output voltage is connected to the tertiary coil 33 of the transformer 30. Of the output voltage detection circuit 19, a voltage drop element 50 is connected to a section which is connected to the rectification element in series except a path through which the commutation current of the commutation circuit runs. COPYRIGHT: (C)2004,JPO&NCIPI
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