| 摘要 |
PURPOSE:To eliminate the need for any external magneric field for correction by converting the DC voltages proportional to the X axis component and Y axis component of magnetism to AC signals. CONSTITUTION:The DC voltages which are amplified 7, 13 and are proportional to the X axis and Y axis components of external magnetic fields are used as control voltages for amplitude variable circuits 8, 14, and the AC signals are applied from a frequency divider 2 to the circuit 8, by which the AC signal of the amplitude proportional to the magnitude of the X axis component of the external magnetic fields is obtained, while the AC signal past a phase shifter 4 of 90 deg. is applied to the circuit 14, the amplitude thereof is regulated in proportion to the magnitude of the Y axis component. The X axis correcting AC signals from generating parts 9, 18 are applied to the X axis AC signal from the circuit 8 in a matrix 10 circuit, and the Y axis correcting AC signals from generating prts 15, 19 are applied to the Y axis AC signal from the circuit 14 in a matrix circuit 16. The AC signals of the corrected X axis and Y axis are added in a matrix circuit 17 and are outputted 21. |
