AMMETER

PURPOSE:To obtain an ammeter with a high measurement accuracy when measuring bus current according to the induced voltage of a coil. CONSTITUTION:Split coils 41-412 formed by winding a coil winding on the outer periphery surface of a cylinder core by a specific number of turns are constituted. Terminals 91-912 for regulating voltage are provided near the winding end of the coils windings of the split coils 41-412. Further, the split coils 41-412 are laid out on a plane which is vertical to the axis center of a bus 1 and are connected in series with an equal spacing at the same distance in reference to the axis center of the bus 1 so that the center axis may be equal to the tangential line of a circle in reference to the axis center of the bus 1.