Various embodiments comprise a magnetic field compensation system. In some examples, the system comprises one or more coil drivers, magnetic field coils, and one or more magnetic field sensors. The one or more coil drivers supply a current to the magnetic field coils to generate a magnetic field. The magnetic field coils receive the current and generate the magnetic field. The magnetic field coils may be arranged in an array. The magnetic field coils individually comprise at least one coil trace pattern that encloses an area. The one or more magnetic field sensors measure the magnetic field generated by the magnetic field coils at a location proximate to the magnetic field coils.

A method of making a component of an electrical machine is provided. An additive manufacturing process is used to manufacture a part, including applying beams of energy to a successive plurality of ferromagnetic material particles and fusing them together to form a ring or segment of a ring with an axis, a solid portion, and laminas that extend from the solid portion in a radial or axial direction.

The present specification discloses a pulsed electromagnetic field system having planar microcoil arrays integrated into clothing. Each of the planar microcoil arrays has two or more planar microcoils positioned on a flexible substrate. The planar microcoil arrays are connected to a controller configured to generate an electrical current and transmit that electrical current, in accordance with a particular stimulation protocol, to each of the planar microcoil arrays.

An active two-terminal inductor device with a controllable inducitance based on an inductance value input L_I. A processor system PRS executes an algorithm which controls a power converter PCV with controllable electric switches connected to the two external terminals A, B along with a fixed value inductor component L1. Based on sampling of at least a voltage or a current in connection with the inductor component L1, the algorithm controls the power converter PCV to provide a resulting inductance across the external terminals A, B which serves to match the inductance value input L_I.

An electromagnetic valve has a solenoid, which includes a coil, a plunger, a fixed core, and a plunger spring. The fixed core is E-shaped and has a base, a first outer leg, a second outer leg, and a central leg. The first outer leg, the second outer leg, and the central leg extend from the base. The first outer leg has a first outer attraction surface configured to attract the plunger. The second outer leg has a second outer attraction surface configured to attract the plunger. The central leg has a central attraction surface configured to attract the plunger. The central attraction surface is larger in area than each of the first and second outer attraction surfaces.

The invention provides a method for manufacturing a powder magnetic core through simple compression molding and capable of manufacturing a complicatedly shaped powder magnetic core with reliable high strength and insulating properties. The invention is directed to a method for manufacturing a powder magnetic core with a metallic soft magnetic material powder, the method including: a first step including mixing a soft magnetic material powder and a binder; a second step including compression molding the mixture obtained after the first step; a third step including performing at least one of grinding and cutting on the compact obtained after the second step; and a fourth step including heat-treating the compact after the third step, wherein in the fourth step, the compact is heat-treated so that an oxide layer containing an element constituting the soft magnetic material powder is formed on the surface of the soft magnetic material powder.

An external adjustment device includes at least one permanent magnet configured for rotation about an axis with a first handle extending linearly at a first end of the device and a second handle at a second end of the device, the second handle extending in a direction substantially off axis to the first handle. The external adjustment device further includes a motor mounted inside the first handle and a first button located in the proximity to one of the first handle or the second handle, the first button configured to be operated by the thumb of a hand that grips the one of the first handle or second handle. The first button is configured to actuate the motor causing the at least one permanent magnet to rotate about the axis in a first direction.

A system and method for detecting the location of coil open and coil short faults. The method includes obtaining an instantaneous admittance signature of each solenoid coil, sending out a periodic test signal to each valve, obtaining a new admittance signature; and calculating the coil-open and coil-short faults.

An external adjustment device includes at least one permanent magnet configured for rotation about an axis with a first handle extending linearly at a first end of the device and a second handle at a second end of the device, the second handle extending in a direction substantially off axis to the first handle. The external adjustment device further includes a motor mounted inside the first handle and a first button located in the proximity to one of the first handle or the second handle, the first button configured to be operated by the thumb of a hand that grips the one of the first handle or second handle. The first button is configured to actuate the motor causing the at least one permanent magnet to rotate about the axis in a first direction.

A resonant energy stabilizer contains: a body, a lid, a mineral crystal, the current amplifier, and a medium frequency current device. The body includes an accommodation chamber. The lid includes an accommodating room. The mineral crystal includes a recess configured to accommodate a sapphire for producing far-infrared waves of electrostatic pulse. The recess is surrounded by a white crystal, a citrine and a green crystal which are surrounded by multiple titanium crystals, and a first magnetite is located above the white crystal, the citrine and the green crystal. The current amplifier includes multiple plasma pieces stacked together to increase a distance of the far-infrared waves of the electrostatic pulse, and each plasma piece has a copper coil layer, a red brass patch, and a red copper sheet. The medium frequency current device includes multiple second magnetites, an input segment, a central processing unit, a booster, and an output segment.