| 摘要 |
A brushless motor having accommodated within a case of said motor by having mounted on a substrate (25), rotor revolution detection sensors (7A - 7C, 8 and 8A) and a monolithic integrated circuit (40) which includes an inverter (2) for rotatingly driving a rotor, drive circuits (3, 6) for driving the inverter (2), a power source circuit (4) for supplying a power required by each circuit, circuits (9, 10, 11, 12 and 13) for controlling the revolution number of the rotor and a protection circuit (5) for protecting the inverter (2) from an excess current. <IMAGE> |
