Fluxgate sensor and phase adjustment method for fluxgate sensor

摘要

A ferromagnetic core 105 around which a detection coil 111 is wound, an oscillator circuit 101 for outputting a periodic signal of a predetermined frequency, and a core 105 using the periodic signal. Exciting circuits 103 and 104, detecting circuits 111 to 117 that output a signal corresponding to the component of the predetermined frequency from the output of the detecting coil 111 using the periodic signal, the exciting circuits 103 and 104, and the detecting circuit 111. To 117, phase adjustment circuits 124 and 125 that adjust the phase of the periodic signal supplied to at least one of the flux gate sensors 1 to 117. [Selection diagram] Figure 1