| 摘要 |
<p>A drive device (1) of the present invention includes a pair of drive switches (12, 14), a first diode (D1), a switching element (16), a current detection unit (R1, 18), a capacitor (C1), a second diode (D2), and a current control unit (20). The first diode (D1), the switching element (16), and the current detection unit (R1, 18) are arranged, in this order from one end of an armature (4) in a motor (2), on a braking current path that is formed of the armature (4) and a field winding (6, 8) in the motor (2) when the pair of drive switches (12, 14) is in a brake position. The second diode (D2) is adapted to keep allowing a braking current to flow through the field winding (6, 8) when the switching element (16) is in an off-state by directly connecting a partial path between the switching element (16) and the current detection unit (R1, 18) on the braking current path and the other end of the armature (4).</p> |
