| 摘要 |
<p>PURPOSE:To generating a precise magnetic field while extremely reducing the effect by a feeder and a feedback wire by connecting the feeder and the feedback wire which form a current couple providing mutually reverse direction current between the currents of each power source and a closed current circuit formed with parallel circuits. CONSTITUTION:A coil 1 is divided into many coil pieces 1'. All the feeders 4 and the feedback wires 5 of currents are placed at the position of a current couple. For this reason, a power source 2 is divided into the first power source 2A and the second power source 2B and a closed current circuit is formed with parallel circuits of half the number of divided coils from respective power sources 2A, 2B and with as many series circuits as the divided number from a load. The inductance of the whole coil 1 can be reduced irrespective of the size and the rise speed and the strength of the current can also be selected arbitrarily. This construction can remove the electrical and the magnetic harmful effects by the current of the feeder 4 and the feedback wire 5.</p> |
