| 摘要 |
<p>PURPOSE:To enhance detection accuracy by averaging output, in a current sensor utilizing an amorphous double-core multivibrator bride, by opposedly arranging a plurality of detection coils to both sides of a conductor through which a current to be measured flows. CONSTITUTION:In a current sensor using a double-core multivibrator bridge, each of sensors 4a, 4b is constituted of a plurality of the same sensor elements 3 each formed by winding a detection coil 2 around a magnetic core 1 and both sensors 4a, 4b are opposedly arranged to both sides of a conductor 5 through which a current (i) to be measured flows. The sensors 4a, 4b are constituted by connecting said sensor elements 3 in series or in parallel and used as two arms of the input side of a vibrator bridge M as shown by a drawing. The current detected by the detection coil 2 wound around the indivisual magnetic coil 1 is detected with good accuracy because the effect of the dimensional error of the magnetic core 1 and the difference of the number of windings of the detection coil 2 is averaged by connecting a plurality of the sensors.</p> |
