CURRENT SENSOR WITH MAGNETIC TOROID

摘要

A current sensor for sensing current in a primary source, including a primary conductor forming at least one winding on a first portion of a toroid formed from a magnetic material. A secondary source of electrical current from a signal forms a plurality of winding on a second portion of the toroid. An output reader measures the instantaneous loading of the signal passing through the plurality of windings as a function of the primary source current. The preferred toroid is formed from an amorphous core magnetic material having an hysteresis saturation point is much larger than the coercivity of the material and said primary source of electrical current is AC or DC current. The device includes an amplifier for receiving the signal and place an AC voltage or current on the plurality of windings, and further includes a resistor form measuring the resulting voltage or current instantaneous loading.