An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus ...
An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus ...
We present a general computation taking into account the slotting effect on the no-load magnetic field distribution in multipole surface mounted permanent-magnet motors (SMPMM). A new analytical solution based on 2-D analysis in polar coordinates is developed. It includes both radial and parallel ...
Electric current is deflected by a magnetic field – in conducting materials this leads to the so-called Hall effect. This effect is often used to measure magnetic fields. A surprising discovery has now been made at TU Wien, in collaboration with scientists from the Paul Scherrer Institute (Swi...
The levitation force (Figure 5a) is the greatest when the fill factor γhm = 0.3, while the braking force (Figure 5b) is the lowest when γhm = 0.9. That means that the most effective, in terms of the mass of the PMs, is the arrangement with a fill factor of 0.3 and the ...
planarity of the terpy-derived ligands enforces regularity at the metal ion equatorial plane, it is impossible to achieve reasonable Ni–N bond lengths simultaneously for the inner and outer terpyridyl and nitrogen atoms, resulting in a partial distortion that causes a weak to moderate magnetic ...
The above description explains whysteelmakes a better permanent magnet than does soft iron. Thecarbonin steel causes the precipitation of tiny crystallites of iron carbide in the iron that form what is called a second phase. The phase boundaries between theprecipitateparticles and the host iron fo...
Today, the two greatest obstacles to using a permanent magnet motor are, first, the belief that it violates the conservation of energy law; and, secondly, that the magnetic fields of attraction and repulsion decrease according to the inverse square law then the air gap is increased. In fact...
Conclusion:Control of particles in the 3-10 micron range had the greatest affect in reducing engine wear. It was found reducing contamination from 0.016% by weight (standard oil filter) to 0.0025% by weight (extended filter / 10 micron control), reduced engine wear by a factor of 14. Most...
greatest. Primarily, the common center pole, which is a variable single polarity ferromagnetic pole common to both electromagnets and which is located within the interpole space of the permanent magnet armature, helps to concentrate the magnetic flux of both stator electromagnets in the interpole ...