| 摘要 |
PURPOSE:To obtain a compact and inexpensive speed detecting circuit by obtaining an output proportional to the rotating speed at every shaft rotating direction by the output of an encoder. CONSTITUTION:A flip-flop circuit 16 is inverted by any of clockwise (CW) or counterclockwise (CCW) signals of shaft rotation detected by a direction discriminator 9. For example, when the CW signal pulse is inputted, a switch 18a is closed from the terminal Q side, and the input voltage Vi of a linear amplifier 17 is outputted as noninverted state. When the CCW signal pulse is inputted, a switch 18b is closed from the terminal Q side, and the input voltage Vi of the amplifier 17 is outputted as inverted state. Thus, the rectified voltage converted from frequency to voltage and proportional to the speed is processed at every rotating direction. |
