| 摘要 |
PURPOSE:To derive directly mutual inductance, by connecting one terminal of a primary coil and one terminal of a secondary coil, supplying an AC current to the primary coil, and measuring the voltage induced in the secondary coil by a four-terminal pair measuring method. CONSTITUTION:One terminal 12 of a primary coil 1 and one terminal 22 of a secondary coil 2 are connected, and both terminals 11, 12 of the primary coil, and both terminals 21, 22 of the secondary coil are connected to current terminals Hc, Lc and voltage terminals Hp, Lp, respectively, through a coaxial cable 3. When an AC current I1 is supplied to the current terminals Hc, Lc, the current I1 flows to the primary coil, and the secondary coil induces induced voltage E2. Current frequency is denoted as (f), and mutual inductance M is derived by M=E2/2pifI1. The mutual inductance is derived by measurement of once, it is unnecessary to switch connection of the coil, and it can be executed by only electrifying the primary coil. |
