| 摘要 |
PURPOSE: A control circuit for an electric screwdriver is provided to reduce manufacturing cost, and to increase response speed. CONSTITUTION: A control circuit for an electric screwdriver is composed of a rectifying unit(10) rectifying an alternating current of 90-250V, a low-voltage driving unit(20) dropping and outputting a direct voltage, a magnetism maintenance unit(30) maintaining magnetism, a damping unit(40), a voltage detecting unit(50) detecting the output voltage of a motor, a high-voltage driving unit(60) supplying power to a control unit(80) in high voltage, a driving unit(70) supplying uniform power to the motor, the control unit controlling the driving unit, an oscillation unit(90), an operation sensor unit(100) operating the electric screwdriver, and a torque detecting unit(110).
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