Abstract:
The present invention proposes an electronic memory device comprising a memory line including a memory domain. The memory line may contain a number of memory domains and a number of fixed domains, wherein each memory domain stores a single binary bit value. A multiferroic element may be disposed proximate to each memory domain allowing the magnetization of the memory domain to be changed using a spin torque current, and ensuring the stability of the magnetization of the domain when it is not being written. The domain boundary between the memory domain and one of its adjacent fixed domains may thereby be moved. An antiferromagnetic element may be disposed proximate to each fixed domain to ensure the stability of the magnetization of these. The value of each memory domain may be read by applying a voltage to a magnetic tunnel junction comprising the memory domain and measuring the current flowing through it.
Abstract:
The present invention relates to a manufacturing method for a ground-burial-type solid insulated transformer. More specifically, the method produces a transformer which avoids shocking humans and livestock that come into contact with its external casing. Shocks are avoided through use of a shell made of a polymeric compound which easily cools the transformer and which does not corrode even after long-term under ground. The invention comprises a first process wherein a coil form is prepared to form an inner window; a second process wherein a low-voltage coil and high-voltage coil are wound on said coil form creating a first coil part; a third process wherein glass fiber is wound on said first coil part creating a second coil part, and a mold formed to correspond to said inner window and inserted therein before said second coil part is heated; a fourth process wherein the second coil part into which said mold has been inserted is placed in the mold, and an epoxy resin and a curing agent are injected thereby forming a third coil part under vacuum, pressure, and temperature; a fifth process wherein said third coil part undergoes automatic mold-curing, and said mold is separated from said inner window before said third coil part is subjected to post-treatment curing; a sixth process wherein said third coil part is cooled, sanded and washed, and a semiconducting coating agent is applied creating a fourth coil part; a seventh process wherein a core is assembled at said fourth coil part to creating a fifth coil part, and said fifth coil part is tested; an eighth process wherein a conductive mesh is combined with said fifth coil part, a shell assembled and a silicone or polymer compound is filled between said fifth coil part and said shell; and a ninth process wherein the completed transformer is tested.
Abstract:
The invention relates to a read only magnetic information carrier (1b, 1c, 1d) comprising a substrate (2), an information layer (3) and a stabilizing layer (15a, 15b). The information layer (3) comprises a pattern of magnetic bits (4) of magnetic material wherein the pattern of magnetic bits (4) constitutes an array of bit locations. The presence or absence of the magnetic material at a bit location represents a value of the bit location by a magnetic field (5) having a predetermined magnetization direction (6). The stabilizing layer (15a, 15b) is arranged between the substrate (2) and the information layer (3) and comprises hard magnetic material (8, 9) which is magnetically coupled to the magnetic material of the magnetic bit (4). The magnetically coupled hard magnetic material (8, 9) provides the predetermined magnetization direction (6) of the magnetic field (5). The magnetic coupling between the hard magnetic material (8, 9) and the magnetic bits (4) prevents the predetermined magnetization direction (6) of the magnetized material of the magnetic bits (4) to change, which improves the thermal stability of the magnetic bits (4).
Abstract:
The progress of a endovascular aneurysm repair can be monitored by inserting a pressure transducer sensor using a catheter into the sac during endovascular aneurysm repair and then using a small, hand-held read out device to measure pressure easily, safely, inexpensively and accurately. In one aspect a sensor is introduced into the body by the steps of loading the sensor into a catheter, and deploying into the aneurysm sac. This invention also has other applications for measuring physical properties in patients or in other sites.
Abstract:
An electric motor, comprising a rotor having permanent magnets (3) and a stator, wherein the thickness of end plates (6) formed of a magnetic material disposed at the end of the rotor is varied to adjust the maximum speed of the motor, whereby, because the end plates (6) formed of the magnetic material is used, a part of the magnetic flux produced from the permanent magnets (3) is short-circuited inside the rotor and, because the thickness of the end plates (6) is varied, the magnetic flux linked with a winding can be fine-adjusted to easily fine-adjust the maximum speed of the motor.