| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric current detector preventing the effect of noise on outputs of hall elements.SOLUTION: This electric current detector (100) includes a ring-shaped magnetic core (102) disposed around a conductor (105) for conducting a detected electric current (If), the plurality of hall elements (106) severally disposed in gaps (102d) formed at a plurality of positions of the magnetic core (102), and a multiplication circuit (108) for output of a voltage signal (Vh1×Vh2) corresponding to results acquired by together multiplying the values of voltage signals (Vh1) and (Vh2) output from these hall elements (106). |
