| 摘要 |
wo-axis th magnetometer Hall comprises two identical plate-magneto sensitive Hall sensors (1 and 2) arranged in one plane and at an angle of 90 ° relative to one another and consisting of a single n-type semiconductor substrate (3 and 4), having on one side of each of them are formed alternately and at equal distances from one another three rectangular ohmic contacts - first (5 and 6), a second (7, 8) and third (9, 10) arranged parallel to the long sides . The contacts (7, 8) are central to them and symmetrically on both long sides are located the other pairs of contacts (5 and 9) and respectively (6 and 10). The magnetic field (20) has a random orientation. The contact (5) of the sensor (1) via a load resistor (11) and low Ommen trimmer (12) is connected to the outlet (6) of the sensor (2) and the contact (9) of the sensor (1) via a load resistor (13 ) and low ohmic trimmer (14) is connected to the outlet (10). The two resistors (11, 13) respectively and trimers (12 and 14) are equal. The contacts (7 and 8) are connected to the Terminal of the power source (15). The first (5 and 6) and third (9, 10) contacts are respectively connected to the inputs of a respective measuring amplifier (16 and 17), whose outputs are outputs (18 and 19) of the magnetometer of the two orthogonal plane components of the magnetic field (20). The contacts (5 and 6) or respectively (9 and 10) are simultaneously connected with one non-inverting input and an inverting amplifier (16 and 17). |
