| 摘要 |
A digital pointer indicator includes a signal output unit, a microprocessor unit, a digital display unit, and a pointer unit. The pointer unit includes a digital/analogue conversion control unit, a step motor, and a pointer. A thick film unit is connected between the digital/analogue conversion control unit of the pointer unit and the step motor, and it can provide pretty low impedance, so it is able to control a current of the digital/analogue conversion control unit precisely when the digital impulse signal is being transmitted, the rotation of the step motor is micro adjusted accordingly, and thus improving precision of the weight measurement.
|
