48results about How to "Uniform magnetic field strength" patented technology

A magnetic resonance imaging apparatus and method having a magnet assembly, which provides substantially flat surfaces of constant magnetic field outside the assembly and a set of magnetic field gradients. One-, two-, and three-dimensional images are rendered. The static magnetic field is virtually uniform within horizontal degrees of freedom and decreases monotonically in a direction away from the surface. An RF probe, for example, a coil, located adjacent the surface, produces a field substantially perpendicular to the static magnetic field. A magnetic field gradient is set to horizontally scan a given level within the sensitive volume. Received magnetic resonance signals are detected by the coil for a depth corresponding to the excitation frequency. As the tuning and excitation frequency is switched to lower values, signals are generated for layers progressively farther from the surface. The RF probe is automatically tuned. Depth profiles are rendered by concatenating the signals collected at various frequencies. Horizontal resolution is attained by the use of controlled magnetic field gradients.

This invention relates to a magnet control sputtering coating device of a rotary magnetic field plane target including a chip tray, a target base, a target material and a vacuum cavity, among which, the tray, the target base and the material are in the vacuum cavity, the tray is above the base and the material, the material is installed on the base characterizing in also including a magnetic steel group and a rotation motor, among which, the group is composed of a base plate and magnetic steels, more than one magnetic steels are set on the base eccentrically, the entire group is under the place close to the base, the rotation motor is connected with the center of the base via a driving shaft to drive rotation of the group.

The invention relates to microelectronics technology. The invention includes inductively coupled source inductance coupling coil, coil inductance coupling is a linear three-dimensional multi-coil turns. Inductively Coupled coil symmetrical layout of a number of nested right, with the series divided into the within the coil groups and the outer coil group. The strengths and positive effect of the source inductance coupling invention is: the invention, fully three-dimensional symmetric coil structure is designed for electromagnetic fields in the reaction chamber of the internal distribution of symmetry, thereby improving the response of the plasma within the chamber evenly distributed, make the chip surface at various points of the etching rate closer. The invention of the technology programs can be well controlled from the chip to the edge of the central etching rate and uniformity even with the increasing size of the chip.

The invention relates to a magnetron sputtering plating film cathode device which comprises a target barrel and a magnetic rod tubing, wherein the magnetic rod tubing is arranged in the target barrel. The target barrel comprises a target inner barrel and a spattering target which covers the outside surface of the target inner barrel. A magnet of a spattering magnetic field is arranged in the magnetic rod tubing, and a cooling water passage is arranged in the magnetic rod tubing. The cooling water passage comprises a water inlet passage, a plurality of water inlet holes and water return holes and a water return passage, wherein the water inlet holes and the water return holes are distributed around the magnetic field area in the length direction of the magnetic rod tubing. By arranging the water outlet holes on the surface near the spattering area of the magnetic rod tubing, the cooling water can be uniformly sprayed to the target inner barrel from the water inlet passage through the water outlet holes. Compared with the traditional single-end water inlet cooling, the cooling effect of the cooling water in the length direction is uniform, the magnetic field strength of the cathode magnetic rod tubing has little change in length direction during rotation, and the temperature difference of the spattering target in the length direction is small, thereby obviously improving the uniformity of the plating film.

The invention provides a magnetic field providing device, magnetron sputtering equipment and a method using the magnetron sputtering equipment. The magnetic field providing device comprises a plurality of magnetic field detecting elements, a plurality of magnet units and a plurality of adjusting structures. The multiple magnetic field detecting elements are distributed in an array mode in a detecting plane and used for detecting the magnetic field intensities of different positions in the detecting plane. The multiple magnet units are arranged opposite to the detecting plane, and the multiple magnetic field detecting elements are located in magnetic fields of the magnet units. Each magnet unit is connected with one corresponding adjusting structure. By the adoption of the adjusting structures, the magnet units can adjust the magnetic field detecting elements to detect the obtained magnetic field intensities relative to distance change of the detecting plane, and the magnetic field intensities on the detecting plane are uniform. According to the magnetic field providing device, the magnetic field detecting elements are used for detecting the magnetic field intensities on the detecting plane away from the magnet units by a preset distance, the adjusting structures connected with the magnet units are used for adjusting the magnetic field intensities at the detecting plane position, and the uniform magnetic field intensities can be obtained on the detecting plane.

The invention discloses a closed-loop current sensor, comprising: at least one compensation coil arranged at a predetermined position of a wire through which the current to be measured flows; at least one magnetic sensor chip, each magnetic sensor chip arranged at a compensation coil In the cavity, it is used to measure the strength of the magnetic field of the current to be measured and the superimposed magnetic field of the compensation magnetic field; the control module is used to output a current of predetermined size according to the output signal of the magnetic sensor chip; the input terminal of the control module is connected with the magnetic sensor chip The output end is connected, and the output end is connected with one end of the compensation coil; the input end of the IV conversion module is connected with the other end of the compensation coil, and the output end is used as the output end of the closed-loop current sensor. Since the magnetic field strength in the cavity of the compensation coil is relatively uniform, the magnetic sensor chip of the closed-loop current sensor can more accurately measure the strength of the superimposed magnetic field without a magnetic core. A closed-loop current sensor that does not use a magnetic core is relatively small in size, light in weight, and low in manufacturing cost.

The invention relates to a three-phase permanent-magnet synchronous motor rotor punching sheet suitable for both line starting and variable frequency starting. The three-phase permanent-magnet synchronous motor rotor punching sheet is an iron core punching sheet which is super-ultra-high in efficiency and suitable for a rotor of a high pull-out torque three-phase rare-earth permanent magnet synchronous motor and a rotor of a variable-frequency and variable-speed motor three-phase permanent magnet synchronous motor, and is used for a permanent magnet synchronous motor with a 132 base. The three-phase permanent-magnet synchronous motor rotor punching sheet is provided with a rotor punching sheet body made of a low-loss silicon steel sheet in a punching mode. Starting rod holes are evenly distributed on the outer circumference of the rotor punching sheet body, and W-shaped magnetic steel grooves are evenly formed in the rotor punching sheet body. A magnetic isolation bridge A is arranged between the lower portions of the starting rods and the magnetic steel grooves, and a magnetic isolation bridge B and a magnetic isolation bridge C are arranged between every two adjacent magnetic steel grooves. Rigidity reinforced screw holes and rotor shaft holes are formed in the rotor punching sheet body.

The invention discloses a electromagnetic induction heating winding. It includes non- magnetizer basis material covered by copper film, winding covered by copper film and non-magnetizer material board. Its lengthways section from from the top down are non-magnetizer material board, winding covered by copper film and non- magnetizer basis material covered by copper film. The distance of each two wind is equal, or inner wide outer narrow to form the style of inner sparse outer dense bit by bit. It can also be wind which is covered by copper film on double surfaces. The character of the invention is advisable designing, simple technics; average magnetic field strength, the inductive pyrotoxin is not limited by position, it can produce same heating energy; the invention is suitable to all kinds of heating equipment, especially when the inductive pyrotoxin is smaller than heating winding and the position is not be ensured.

An integrated inductor includes a plurality of coils. Each of the plurality of coils is electromagnetically coupled together to form an inductor between a first inductor terminal and a second inductor terminal. At least one of the plurality of coils is disposed in a layer on an integrated structure and at least another of one of the plurality of coils disposed in a layer of the integrated structure. One of the plurality of coils is spaced with respect to another of the plurality of coils to cause a substantially uniform magnetic field strength across a surface of the integrated inductor. An integrated magnetic particle sensor system, an integrated inductor having a section having a different width than another section, an integrated inductor having at least one gradual transition section, and an integrated inductor having at least one floating metal structure are also described.

The invention provides a method for establishing an animal model of an Alzheimer's disease. The method includes feeding a rat for at least 60 days under the condition of exposing to a power-frequency magnetic field; feeding the rat with drug D of galactose and beta of amyloid protein liquid during the process of feeding, and accordingly obtaining the animal model of the Alzheimer's disease. Thus, the method can be a useful supplement of a single-factor-induced animal model of the Alzheimer's disease. According to an embodiment of the method, characteristic pathological changes of the animal of the Alzheimer's disease can be expressed; the method has a characteristic of learning and memory impairment, is consistent with the environmental requirements of long-time and lasting exposure to the power-frequency magnetic field, and has the advantages of stable performance, good reproducibility, and low cost.

The invention relates to a low-frequency magnetic field generator used for cell experiment research. Its basic components include: a magnetic field generator part, a coil part and a patch clamp recording part. The magnetic field generator part mainly includes: MCU, human-computer interaction module, Signal generation module, power amplification module, power supply module, human-computer interaction module to realize the input and display of user commands, MCU as the core to realize the generation of signals and the control of various parameters, etc., the coil is fixed on the patch clamp microscope through a movable plastic arm On the mirror arm, the user selects the waveform, intensity and duty cycle of the signal through the human-computer interaction part, and the single-chip microcomputer controls the signal generation part to output the corresponding signal according to the selected parameters, and then sends it to the power amplifier circuit to output a large current to drive the diaphragm The coil on the clamp generates the magnetic field expected by the user, stimulates and records the electrophysiological properties of the cells through the patch clamp electrodes.

A fluid magnetic processor, which includes a ring-shaped body formed by butt joints of at least two clamps, and a flexible connection between every two adjacent clamps, and a number of permanent magnetic cores are buried inside each clamp, and the permanent The direction of the magnetic force line of the magnetic core is the radial direction of the ring-shaped body, and the material of the two hoops is a metal material for magnetic shielding. The processor has the advantages of convenient disassembly and assembly on the water delivery pipe and better magnetic treatment effect. Generally, this processor can be directly installed on the fluid inlet of the equipment and/or non-magnetic pipes (such as PE pipes, PPR pipes, stainless steel pipes, etc.) for anti-scale, descale, sterilization, anti-rust , Anticorrosion, etc. The processor can be used alone according to the equipment structure and equipment working conditions, or can be connected in series or combined on the water delivery pipe. The processor has a wide range of applications, including: various industrial cooling water systems that are prone to bacteria, algae and scale; air conditioning, refrigeration circulating water systems; various heat exchange and cooling tower systems; swimming pool systems, etc.

The invention provides a power frequency electromagnetic field generating device having a tumor inhibiting effect. The power frequency electromagnetic field generating device is composed of a power frequency power supply, two auto-transformers, two diode bridges, two groups of coils, a radiation part, a voltage detection part, a magnetic field detection part, a temperature measuring part and a terminal computer. According to the device, on the basis of the power frequency 50/60Hz power supply, voltage is continuously changed by virtue of the DC and AC auto-transformers, so that superposed static and alternating electromagnetic fields are generated in the radiation part. A loading method of the electromagnetic fields having the tumor inhibiting effect has a certain extensibility, the frequency is within a range of 30-300Hz, the intensity ratio of the static electromagnetic field to the alternating electromagnetic field is at 0.5-2.5 and total intensity is 1-10mT. The invention provides the special power frequency electromagnetic field generating device and the loading method; the generating device is reasonable in design, capable of acting on organisms, noninvasive and low in toxic and side effects, and the generating device has the obvious inhibiting effect on a plurality of tumors; and due to the action of the magnetic fields, the content of superoxide radicals in cells can be increased, and autophagy is promoted.

The invention provides a device and a method for detecting the surface magnetic field intensity of a permanent magnet. The device comprises a C-shaped soft magnetic material part, a conveying track and a Hall probe, wherein the permanent magnet is conveyed to an opening of the C-shaped soft magnetic material part through the conveying track; and the Hall probe is arranged in an air gap which is formed between the detected permanent magnet and the C-shaped soft magnetic material part. The method comprises the following steps of: placing the permanent magnet at the opening of the C-shaped soft magnetic material part to form the air gap between the permanent magnet and the C-shaped soft magnetic material part; and forming a uniform magnetic field in the air gap, and measuring the intensity of the magnetic field by using the Hall probe. By adoption of the device and the method, the surface magnetic field intensity of the permanent magnet can be conveniently and quickly measured, and measurement data is approximate to the actual operating state of the permanent magnet. The invention has the advantages of convenience for measurement, high efficiency and high accuracy, and can be applied to detection of the magnetic induction intensity of batched products.

The invention discloses an electromagnetic heating type aerosol delivery appliance, which comprises a cylindrical aerosol generating product containing cavity (1) and a magnet exciting coil (2) surrounding the outer wall of the containing cavity, and the included angle between a winding wire of the magnet exciting coil (2) and the central axis of the aerosol generating product containing cavity (1) is 20-70 degrees. According to the invention, a coil inclined winding mode is adopted, compared with a coil vertical winding mode, the magnetic field intensity in the aerosol generating product containing cavity can be more uniform, the electromagnetic heating type aerosol delivery appliance is particularly suitable for being used in cooperation with a magnetic particle uniform heating type aerosol generating product, and more uniform electromagnetic heating is achieved.

The invention relates to a quasi-ideal iron core, an electromagnetic conversion device using the same, and a method for producing the iron core and relates to the technical field of electromagnetism. Iron cores in prior art are of rectangular or annular frame structures, iron yoke portions coat coils or coils are bared in external space, magnetic leakage and electromagnetic vortex are large, the magnetic saturation value is low, and electromagnetic conversion efficiency is low. The quasi-ideal iron core is an equal magnetic flux section three-dimensional axisymmetric body or rotation body, an iron yoke coats and surrounds a coil without an air gap, a magnetic circuit is in smooth transition, and all magnetic force lines generated by the coil are directly incorporated into magnetic flux of the iron core, so that magnetic leakage and electromagnetic vortex of the iron core are furthest reduced, electromagnetic conversion efficiency and magnetic saturation values are high, high magnetic field intensity can be achieved by matching a superconducting coil with the iron core, and meanwhile, a production process for the equal magnetic flux section air-gap-free quasi-ideal iron core is disclosed; the iron core can be widely applied to occasions where equal electromagnetism generated by general and ultra-strong magnetic fields is converted.

A coil assembly and a wireless power transmission system are provided. The coil assembly includes a first coil and a second coil. The first coil is disposed on a first plane. The second coil is disposed on a second plane. The second coil is coupled to the first coil. The second coil includes a plurality of bending section, and the bending sections are connected by a plurality of connection lines to form a single loop.

The invention relates to a magnetic latching relay. A magnetic latching relay in the prior art easily causes a demagnetization phenomenon and is not compact in structure. The magnetic latching relay comprises a base, a yoke iron assembly, a magnetic steel assembly, a moving spring assembly, a static spring assembly and a pushing piece and is characterized in that an installing groove for installing the pushing piece is formed in the base, the length of the installing groove is larger than the pushing piece, a clamping groove is formed in the pushing piece, and a moving spring movable piece of the moving spring assembly is clamped into the clamping groove. A shifting rod for shifting the pushing piece in a reciprocating mode is arranged on the magnetic steel assembly, a limiting groove is formed in the pushing piece, and the shifting rod is clamped in the limiting groove. The pushing piece is parallel to an irony core, a moving spring terminal lug is arranged on the moving spring assembly, a static spring terminal lug is arranged on the static spring assembly, and the moving spring terminal lug and the static spring terminal lug are perpendicular to the irony core. The magnetic latching relay is simple in structure, reasonable in design, compact in structure and good in performance.

The invention relates to the technical field of wastewater denitrification and carbon emission reduction, in particular to a device and a method for enhancing iron autotrophic denitrification coupled carbon capture. The invention provides a device for enhancing iron autotrophic denitrification coupled carbon capture. The device comprises a water inlet device, a carbon dioxide supply system, a low-intensity magnetic field reactor and an adsorption liquid pool, the water inlet device is connected with a water inlet of the low-intensity magnetic field reactor; the carbon dioxide gas supply system is connected with a gas inlet of the low-intensity magnetic field reactor; the low-intensity magnetic field reactor is connected with the adsorption liquid pool through an exhaust port; the low-intensity magnetic field reactor comprises an iron-based carrier. The device can synchronously realize the purposes of denitrification and carbon emission reduction in the wastewater.