To provide a control device for synchronizing an alternatingcurrent flowing in a plurality of neighboring electromagnetic induction coils approaching one another and capable of controlling a current level and free of mutual interference. 互いに接近した複数の隣接した電磁誘導コイルに流れる交流電流を同期化し、電流レベルの制御が可能で、相互干渉しない制御装置を提供する。 - 特許庁
When an alternatingcurrent is passed through the coil 3 of the electromagnet 1, both the magnetic poles 2a and 2b alternately change their polarities to south pole and to north pole, and the magnet 6 is therefore vibrated by magnetic interference. 電磁石1のコイル3に交流電流を流すと、両磁極2a,2bが交互にS極とN極に変化するので磁石6は磁気干渉で振動する。 - 特許庁