| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively reduce noise that is caused by the change of magnetic fields formed in the first loop circuit and the second loop circuit. Ž<P>SOLUTION: A voltage converter includes the first loop circuit and the second loop circuit which share an inductance element, and herein a current flows alternately to the first loop circuit and the second loop circuit, accompanying the ON/OFF operation of the first switching element provided in the first loop circuit. In the converter, the direction of a magnetic field, which passes through the first loop circuit being formed at ON operation of the switching element in the first loop circuit and the direction of a magnetic field, which passes through the second loop circuit being formed at OFF operation after ON operation of the first switching element in the first loop circuit are the same, and all the elements that constitute the first loop circuit and the second loop circuit are arranged on the same surface of a board, and the second loop circuit is connected to the second DC power source and the first loop circuit is connected to the first DC power source. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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