Three dimensional magnetic field sensor
First Claim
1. Magnetic field sensor for measurement of the three components of a magnetic field comprising a Hall-effect element and an electronic circuit, whereby the Hall-effect element has an active area of a first conductivity type which is contacted with voltage and current contacts whereby at least four current contacts for current feed and four voltage contacts are present, whereby the voltage contacts are connected to the electronic circuit which derives three signals, each by means of one of:
- summation, differential, and both summation and differential formation of the electrical potentials present at the voltage contacts which are proportional to the three components of the magnetic field.
4 Assignments
0 Petitions
Accused Products
Abstract
A magnetic field sensor for measurement of the three components (Bx, By, Bz) of a magnetic field comprises a Hall-effect element (1) and an electronic circuit (22). The Hall-effect element (1) comprises an active area (18) of a first conductivity type which is contacted with voltage and current contacts (2-5 or 6-9). Four voltage contacts (2-5) are present which are connected to inputs of the electronic circuit (22). By means of summation or differential formation of the electrical potentials (V2, V3, V4, V5) present at the voltage contacts (2-5), the electronic circuit (22) derives three signals (Vx, Vy, Vz) which are proportional to the three components (Bx, By, Bz) of the magnetic field.
205 Citations
6 Claims
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1. Magnetic field sensor for measurement of the three components of a magnetic field comprising a Hall-effect element and an electronic circuit, whereby the Hall-effect element has an active area of a first conductivity type which is contacted with voltage and current contacts whereby at least four current contacts for current feed and four voltage contacts are present, whereby the voltage contacts are connected to the electronic circuit which derives three signals, each by means of one of:
- summation, differential, and both summation and differential formation of the electrical potentials present at the voltage contacts which are proportional to the three components of the magnetic field.
- View Dependent Claims (2, 3, 4, 5, 6)
Specification