| 摘要 |
PURPOSE:To obtain a power supply control device for super-conductive coil which enables a super-conductive coil to control exciting current without being transferred to ordinary conductivity at either rise or fall of coil current, by limiting variation rate of coil current. CONSTITUTION:When a toroidal power supply ON-OFF switch 12 is made ON, a lower-value selector 10 compares output of a rise function generator 11 with current setting 7. A lower value is outputted to an add point 16. Namely, current is gradually increased according to a rise pattern from the function generator until coil current reaches from zero to the set value. When it is made OFF, a fall function generator 13 outputs a fall pattern. The difference of final memory value in coil current of an analog memory 14 is applied to the output of the fall function generator to compensate the difference between output starting level and current setting 7. |
