Magnesy neodymowe material measuring instruments

　　Magnesy neodymowe material measuring instruments:

　　The measuring instrument consists of electromagnet, the measuring coil, measuring circuit and control computer.

　　During the measurement process, the computer to control the size of the power supply output current of the DC excitation can make the electromagnet produce measuring magnetic field with the positive and negative direction and the changed intensity, the induced electromotive force generated by the magnetic field strength H and the polarization J coil via respective electronic integrator Pointsto obtain a voltage corresponding with the magnetic field strength H and the polarization J, via the analog - digital conversion into a digital number, the measurement results and the curve obtained by a computer calculation processing.

　　Most of the early Magnesy neodymowe material measuring instruments use relay to control and output the direction of current, now more often instead of using high power MOS and insulated gate field effect transistor, so that the circuit has higher reliability.