| 摘要 |
PURPOSE:To reduce the effect of externally arriving radiowaves and to make it possible to eliminate fluctuation in weight display, by providing bridge-circuit forming lines and shielding lines, which surround said forming lines on a printed wiring board. CONSTITUTION:On a printed wiring board 12 for input an output, a series of shielding lines 12i is provided in addition to input lines 12a and 12b, output lines 12c and 12d, and relay lines 12e-12h, which constituted a bridge circuit, so that the shielding lines surround each line described above. Printed wiring boards 13 and 14 for both gages are also constituted by the same fashion. Thus the effect of externally arriving radiowaves is reduced to the minimum in this constitution. Therefore, the effect of the externally arriving radiowaves is made even, induction of noise radiowaves is alleviated, and the fluctuation in weight display can be eliminated. |
