| 摘要 |
<p>PURPOSE: To provide a magnetic sensor by which a magnetic field can be precisely detected with high sensitivity. CONSTITUTION: The magnetic sensor detecting an external magnetic field HEXT on the basis of variation in an inductance of an inductor 3, in which a coil 2 is wound on a magnetic core 1 made of a soft magnetic material, is provided with a pulse current oscillator 4 connected to the inductor 3. From the pulse current oscillator 4, pulse type exciting current Ip is fed to the inductor 3, and then, the external magnetic field HEXT is detected.</p> |
