Patent ID: 6163150
Filing Date: 2000-12-19
Classification: G01R

Abstract:
A magnetic field sensor comprising a first layer, a second layer and a third layer each being stacked, in order, with an insulating layer interposed therebetween,wherein said first layer comprises a J-shaped conductor pattern and a straight-lined conductor pattern with its sectional shape being approximately rectangular and with a predetermined width, and with the straight-lined conductor pattern perpendicular to the long, straight staff of the J-shaped conductor pattern at the midpoint of the straight edge of said staff that is continuous with the outer edge of the hook-shaped portion of the J,wherein said third layer has the same conductor pattern as said first layer,wherein said second layer has a ladle-shaped conductor pattern with a predetermined width of the conductor pattern being more slender than those of said first and third layers, disposed along the center of the width of the conductor pattern of said first and third layers consisting of said J-shaped conductor pattern and said straight-lined conductor pattern, and a L-shaped conductor pattern with approximately the same width of the conductor as said J-shaped conductor pattern, disposed face to face with said J-shaped conductor pattern to form a loop,wherein one end of said L-shaped conductor pattern is connected to said ladle-shaped conductor pattern and the other end of said L-shaped conductor pattern is connected to an end point disposed in the long, straight staff of the J-shaped conductor pattern of the first and third layers, near the end of said staff furthest from the hook-shaped portion of the J,wherein shapes of said J-shaped conductor pattern and said L-shaped conductor pattern projected on a plane are symmetrical about the mid-point of said straight-lined conductor pattern, andwherein a voltage generated on a load between the conductor pattern of said second layer and the conductor pattern of said first and third layers is detected and used as a magnetic field output.