| 摘要 |
PURPOSE:To protect a transistor and stop a motor quickly, by keeping the direction of current flowing to a transistor on driving and current generated from a DC brush motor on stop, constant by the change-over of the contact point of a relay. CONSTITUTION:A relay 10 has a contact point connected to a DC brush motor M. By a current circuit 20, current fed to the DC brush motor M is controlled. The change-over of the contact point of the relay 10 is controlled by a control circuit 30, and by the change-over of the contact point of the relay 10, the direction of current flowing to a transistor T1 on driving and current generated from the DC brush motor M on stop is kept constant.
|
