| 摘要 |
PURPOSE:To prevent mutual interference along with a smaller size by providing three grooves on the circumference of a spherical coil bobbin made of an insulating material in such a manner as to be orthogonal to each other and coincide in the center to wind coils on the respective grooves. CONSTITUTION:Three grooves 21-23 are provided on the circumference of a coil bobbin 2 made spherical of an insulating material such as Derlin in such as to be orghogonal to each other and coincide in the center and coils (x), (y) and (z) wound on the respective grooves 21-23 are connected to SQUID fluxmeters D1-D3. Thus, the coils (x), (y) and (z) can be each made circular. |
