| 摘要 |
An apparatus for producing a floating DC voltage source from an electric motor which may be a brushless DC motor. The apparatus includes a rectifier circuit for rectifying back electromotive force voltage from a winding of the motor and a clamping circuit for clamping the rectified voltage to produce a floating DC voltage which may be a TTL logic level voltage. A motor control circuit is disconnected from the winding to produce the back electromotive force voltage. |
