| 摘要 |
PURPOSE:To perform brake operation by supplying power from a battery power source through a single switch to a control circuit comprising a distribution circuit, a transistor bridge, a floating power supply, and the like. CONSTITUTION:A control circuit comprises a distribution circuit 2, transistor bridges 51-56, and floating power supplies 41-43, and power is fed from a battery B through a single switch SW1 thereto. Upon interruption of the switch SW1, power MOSFET Tr19-Tr21 in the downstream are entirely turned OFF while power MOSFET Tr16-Tr18 in the upstream are entirely turned ON. Consequently, three coils LU, LV, LW are shortcircuited and brake is applied. Furthermore, consumption of the battery B through the control power source can be prevented by interrupting the single switch SW1. |
