| 摘要 |
PURPOSE:To lessen the number of parts for power for driving portion as well as reduce the consumption of power by controlling the output voltage of power source for pulse motor by using micro-computer. CONSTITUTION:A command from the micro-computer MC is sent to the power controller C through the resistor RG1 and the digital-analog converter DA, and the power controller C controls the transistor Q3 and send out a driving voltage corresponding to the operation mode of pulse motor. At rotation mode, the transistor Q4 becomes ON by a driving timing signal and a fixed voltage is applied to the excited coil L and also the fixed voltage is stabilized by the feedback of the driving voltage for the excited coil L from the detector D. At holding mode, a fixed voltage lower than that at the rotation mode is set up by the command of the micro-computer MC and the pulse motor is made a rest state. |
