| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a magnetic sensor and a measuring apparatus, capable of highly accurately detecting/measuring an external magnetic field intensity based on variations in output frequency of a quartz oscillator.SOLUTION: The magnetic sensor is composed of a quartz oscillator that includes a quartz vibrator X1, a transistor Q1, and includes a load capacity circuit 11. The magnetic sensor comprises a coil L1 which is provided on a line connecting a point between series-connected capacitors C1, C2 grounding a base of the transistor Q1 with an emitter of the transistor Q1, and inductance of which changes according to the external magnetic field intensity, and further outputs a frequency signal variable according to the external magnetic field from an output terminal connected to the emitter of the transistor Q1. The measuring apparatus comprises the magnetic sensor and a magnetic field intensity measuring section.</p> |
