| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brushed motor control module capable of accurately obtaining the number of rotations of a brushed motor by reducing the effect due to the intrusion of the electromagnetic noise from the outside. <P>SOLUTION: The brushed motor control module 10 comprises: a first circuit board 1 having a power selecting circuit element 5 mounted on the upper surface; a second circuit board 2 disposed opposite to the upper surface of the first circuit board 1 with a space; power supply electric power supplying parts 3 which are connected to the first circuit board 1 and to which a power supply electric power 13 is supplied from the outside; and a pair of drive power supplying parts 4a, 4b for supplying a drive power 14 to an external brushed motor M. In this control module, a drive control circuit element 6 is mounted on the lower surface of the second circuit board 2. Since the electromagnetic noise from the outside is hardly applied to current waveforms by installation of the first circuit board 1 in a space between the second circuit board 2 and a heat dissipating member 18, the number of the rotations of the brushed motor M can be accurately obtained based on the current waveforms of the brushed motor M. <P>COPYRIGHT: (C)2009,JPO&INPIT |
