2013年9月2日星期一

superconducting materials with DC solenoid problem

Resistivity of superconducting materials is almost zero, the resistivity of copper enameled copper resistivity. At room temperature, but can not make any conductors of a superconducting material, as

Temperature superconductors is usually -327 °.
    Or want to increase the magnetic force of the electromagnet, it must have a greater current power, a sufficient number of turns of the electromagnetic coil and a sufficiently large U-shaped core

, Magnetic Grate The specific needs complex calculations to calculate primary and secondary school is in an ideal condition, so the actual operation of a large deviation. Simply put, the line

The number of turns is proportional to the current size and magnetic, but too many turns, and the current will decrease, and this requires a large wire size (reduce the resistance, increasing current)

Increased diameter will increase the weight and volume, while providing enough power to a DC power supply. Various factors spurred the discovery and invention of the superconductor. magnetic bar But the super-

Conductor is an amateur can not be achieved under the conditions.

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