| 摘要 |
PURPOSE:To automatically reset a superconducting effect effectively by conducting a superconducting coil with a battery when the magnetic flux of the motor becomes smaller than a set value. CONSTITUTION:When the current of a superconducting coil 4 is vanished, the magnetic flux of a motor 3 cannot be detected by a Hall element 6. If the voltage of a reference voltage 5 becomes higher than a Hall voltage, a comparator 7 outputs a voltage of H level to energize a relay coil 8. Thus. a contact 8a is turned ON, and a current flows from a battery 1 to the coil 4. When the coil 4 is reset, the Hall voltage of the element 6 becomes higher than the reference 5, the coil 8 is de-energized to turn OFF a normally open contact. |
