In our growing life, the application of electromagnets more widely, the DC motor magnet is more and more applications. That DC motor magnet in the suction process is how to change it?
DC motors magnet coil as a constant pressure in the work of the same circumstances, the coil current is constant in the pull-in process will not change with the change of the air gap. Therefore, to allow the operation of the ramp rate is too high, it is larger before the suction gap, the reluctance of the magnetic circuit is also larger, smaller flux, and therefore less suction. After suction, the air gap is small, the reluctance is also very small, the maximum flux, electromagnetic suction is also the largest.