| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor drive unit capable of reducing noise by suppressing heat generation in a switching element without making a switching waveform sluggish. SOLUTION: The motor drive unit 10 comprises a bridge circuit 15 to which a plurality of switching elements 11, 12, 13 and 14 that drive-control the forward rotation and the reverse rotation of a motor 18 by a PWM signal are connected, a capacitor 19 connected to the bridge circuit 15, and the motor 18. One of magnetic bodies 31, 32, 33 and 34 is arranged on a circuit to which the switching elements 11, 12, 13 and 14 and the capacitor 19 are connected. COPYRIGHT: (C)2004,JPO
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