Abstract: Disclosed herein is a common mode filter with an ESD protection pattern built therein. The common mode filter includes a base substrate that is made of an insulating material, a first insulating layer that is formed on the base substrate, a coil-shaped internal electrode that is formed on the first insulating layer, a second insulating layer that is formed on the internal electrode, a first external electrode terminal that is formed on the second insulating layer, a first ferrite resin layer that is formed on the second insulating layer and receives the first external electrode terminal, an ESD protection pattern that is formed on the first external electrode terminal, a second external electrode terminal that is formed on the ESD protection pattern, and a second ferrite resin layer that is formed on the first ferrite resin layer and receives the second external electrode terminal.

Abstract: A device housing a battery (50) includes a receiving coil (51), and a charging pad (10) includes a transmitting coil (11) that magnetically couples with, and supplies charging power to the receiving coil. The device further includes a modulator circuit (61) that changes the impedance of the receiving coil according to internal battery data. The charging pad further includes a detection circuit (17) that detects receiving coil impedance changes to detect the battery data. The modulator circuit has a load circuit (62) connected in parallel with the receiving coil and has a series-connected switching device (64) and impedance modulating capacitor (63), and a control circuit (65) that switches the load circuit switching device ON and OFF according to the battery data. The modulator circuit switches the switching device 64 ON and OFF to transmit battery data to the charging pad.

Abstract: A group of magnetic strands are configured into a minimal number of solid magnetized toroidal rings with a conical magnetization direction and then aligned, stacked and assembled into a magic sphere magnetic structure. Each magnetized toroidal ring has predetermined dimensions to form the inner and outer surfaces of a spherical shell. The present invention also encompasses a magic sphere magnetic device with unsegmented solid magnetized toroidal rings and methods for assembling a magic sphere by stacking magnetized toroidal rings with a conical magnetic direction.

Abstract: Improved receiver antennas are disclosed for long offset tensor induction army logging tools. The disclosed antennas include a bobbin which accommodates a ferromagnetic core. The outer surface of the bobbin is wrapped around a binding so that winding is thicker or includes more turns towards a center of the bobbin and is thinner or includes less turns towards the outer ends of the bobbin. The result is that the primary winding with a curved or parabolic profile that enhances the effective magnetic permeability and magnetic moment of the antenna. A secondary winding may also be utilized for flux feedback compensation. The elimination of winding turns towards the ends of the magnetic coil result in reduced DC resistance and the reduction in parasitic capacitance of the antennas. The disclosed antennas may be used in x-y-z receiver arrays.

Abstract: An inductive coil assembly having multiple coils arranged at distinct orientations to provide efficient inductive coupling of power or communications or both to a device when the device is arranged at different orientations with respect to the inductive primary coil. In one embodiment, the inductive coil assembly includes three coils, each oriented along one of the x, y and z axes of a standard Cartesian three-dimensional coordinate system. The three separate coils provide effective transfer of power and communication when the device is at essentially any orientation with respect to the primary coil. In an alternative embodiment, the multi-axis inductive coil assembly of the present invention can function as a primary to inductively transmit power or communication or both over a plurality of magnetic fields at distinct orientations.

Abstract: A nuclear fusion reactor system includes a reactor core containing nuclear fusionable material and a plurality of conducting spheres arranged adjacent each other with at least two of said conducting spheres adjacent the reactor core. The reactor core and the conducting spheres form a electro/magnetic circuit such that fusion of fusionable material in the reactor core establishes an electro/magnetic flow around the electro/magnetic circuit. Preferably, a spherical electromagnetic confinement field is initiated around the reactor core such that fusion of the nuclear fusionable material generates a plasma which interacts with the spherical electromagnetic confinement field in a magnethydrodynamic manner. Preferably, electrical energy is inductively extracted in response to the electro/magnetic flow through a coil arrangement located around at least one of the conducting spheres.

Abstract: An air-wound, coil-type, passive inductor includes a surface which allows the coil to be picked-up using a vacuum probe of a head of a pick-an-place machine and the surface does not interfere with adjusting the spacing between the loops of the coil for tuning the coil after the coil is attached to a circuit board. Terminal ends of the coil are placed on solder paste on interconnection pads on the circuit board, then the board is heated to reflow the solder, and then washed to remove the flux contained in the solder paste. The surface may be adapted to be removed or at least degraded by the heating, or the washing, or afterwards by a mechanical method of removal without damaging the coil.

Abstract: Applicator coil for an electromagnetic therapy apparatus, which has substantially the form of a zone of a sphere deformed into an oval and which is suited above all to rendering a low frequency magnetic alternating field operative on projecting parts of the human or animal body, such as the shoulder region or the face of the person.

Abstract: A coil form for supporting coils of wire includes three intersecting orthogonal plates whose peripheral surfaces together define an imaginary spherical surface. The plate peripheries increase the effective winding area of the coils with respect to the exterior dimensions of the coil form. Terminal posts for the ends of the coil wires are positioned on the plates so as not to waste space and not to project beyond the imaginary sphere.

Abstract: A first set of three spherically or elliptically shaped coils is provided which generates a homogeneous linear gradient magnetic field in its interior. A second set of three spherically or elliptically shaped coils is located concentric to and in close proximity with the first coil set such that the fringing fields outside the second coil set are substantially zero. The coil sets can be separated at their equator and preferably are spherical in shape. The current distribution for each coil is described as well as the winding pattern on the surface of the first sphere which generates the perfectly homogeneous linear gradients inside the sphere. The second concentric sphere having a second coil set thereon which has a similar current distribution and winding pattern to the first coil set such that it will perfectly shield the inner sphere while reducing the linear gradient inside the first sphere by only a factor of 1-(R.sub.1 /R.sub.2).sup.5, where R.sub.1 and R.sub.

Abstract: An electromagnetic device for inductive position measurements for eliminating both the disadvantage of a limited measuring range and the disadvantage of superimposed interference voltages in the event of directional changes by providing a probe having a plurality of winding axes having coils with turn diameters which are greater, as the distance from the center of the probe increases. This creates the possibility of filling the entire probe volume with turns, and an almost complete independence from the direction of the probes relative to one another is shown for distance measures.

Abstract: A spherical transformer and process for forming same is set forth. Hollow, hemispherical elements are rotated to enable a cooperating cutting tool to impart a helical impression therein. An adhesive is sprayed into the interiors of both hemispheres and thereafter powdered metal, such as stainless steel, is directed thereon to form a sheet-like core that when both hemispheres are joined to provide an uninterrupted metal core with said hemisphere. A primary winding is inserted into the aforenoted grooves about one hemisphere and a secondary winding is positioned into the helically cut grooves in said second hemisphere. The thusly formed transformer is positioned on a base for a stability thereof.

Abstract: A stripline transformer pulse generator includes a flat ribbon multiple conductor cable and a ground plane of electrically conductive material placed side-by-side and wound together in a coil to form a transformer. The extremities of at least some of the conductors are joined in parallel and connected to a load. A voltage supply and switch connected between the ground plane and one end of the cable brings about charging and discharging of the device.

Abstract: An improved transformer (20) and method of transformer construction. Primary and secondary windings (30 and 32) are spirally wound onto a spherically shaped core member (24). The core is preferably of laminated construction and can be of either planar or radial configuration. A flux intensifier shield member (40) defines an inner spherical cavity (Y) sized to cooperatively overlie and substantially enclose the inner core and winding assembly. The shield may comprise a pair of hemispherically shaped members including radially extending leaf-like vanes (46) that enable and enhance cooling of the core assembly as well as providing improved transformer efficiency and protective shielding of the core assembly.

Abstract: Circuit interrupting apparatus for interrupting large direct currents comprising a plurality of parallelly connected branch circuits each including a circuit breaker and a saturable reactor connected in series therewith, and a commutating circuit including a capacitor. When opening the circuit breakers the commutating circuit is connected across the branch circuits to pass commutating current in the direction opposite to the normal load current. When the current decreases below a predetermined value, the saturable reactors desaturate to efficiently interrupt the load current.