Abstract: A current transforming harvester (“CTH”) is capable of producing power from a conductor on a preexisting power grid without alteration of the conductor or the preexisting power grid. The CTH includes a current transformer (“CT”) that captures energy via magnetic flux from the conductor. The CT is substantially circular and includes two halves called a “split core,” which allow the CT to easily attach to the conductor without opening the circuit in which the conductor operates. A clamping mechanism of the CTH may secure the CTH to the conductor via a pair of spring-biased clamp pads. The CTH includes circuitry that converts the magnetic flux energy captured by the CT into electrical energy suitable for consumption by an electrical device.

Abstract: A micro-electromechanical system (MEMS) inductor is formed in a saucer shape that completely surrounds a magnetic core structure which is formed from a ferromagnetic material. In addition, an array of MEMS inductors can be formed by dividing up the saucer-shaped MEMS inductor into a number of electrically-isolated MEMS inductor wedges.

Abstract: A short-circuit indicator is provided for arrangement on an electrical line for electrical power distribution which includes a current transformer. The current transformer has an induction coil and an iron yoke for surrounding the electrical line to be monitored for a short-circuit current. The induction coil is seated on a base web of a U-shaped first yoke part. A second yoke part is connected in the form of a joint which can move between a closed position and an open position to one of two U-limbs of the first yoke part. The second yoke part forms a magnetic return path element for the first yoke part in the closed position. The first yoke part is split into two essentially L-shaped parts in the area of the base web to which the induction coil is fitted.

Abstract: A Rogowski coil assembly includes a first Rogowski coil that surrounds a conductor and generates a first voltage output signal. A second Rogowski coil also surrounds the conductor. The second Rogowski coil generates a second voltage output signal. A relay device communicates with the first and second Rogowski coils and processes the first and second voltage output signals. For example, the relay device can process the voltage output signals to calculate an amount of noise in the first and second output voltage signals and/or to minimize the amount of noise in the first and second output voltage signals.

Abstract: The present invention aims to obtain a stable output voltage without requiring an extra circuit by suppressing influence of noise of the primary winding and voltage induction by leakage inductance. In a transformer 3 used in a multi-output switching power supply, a secondary winding S1 for outputting a voltage to be fed back to the primary side out of the secondary windings S2 to Sn winded on a bobbin 3a is divided into a first layer S1a and a second layer S1b, a secondary winding S2 to Sn for outputting a voltage not fed back to the primary side is winded between the first layer S1a and the second layer S1b, and the first layer S1a and the second layer S1b is regular winded.

Abstract: A short-circuit indicator is provided for arrangement on an electrical line for electrical power distribution which includes a current transformer. The current transformer has an induction coil and an iron yoke for surrounding the electrical line to be monitored for a short-circuit current. The induction coil is seated on a base web of a U-shaped first yoke part. A second yoke part is connected in the form of a joint which can move between a closed position and an open position to one of two U-limbs of the first yoke part. The second yoke part forms a magnetic return path element for the first yoke part in the closed position. The first yoke part is split into two essentially L-shaped parts in the area of the base web to which the induction coil is fitted.

Abstract: The invention pertains to a current transformer (1?) for enclosed, gas-insulated high-voltage switchgear (10). According to the invention, a current transformer (1?) is characterized in that a removable installation flange (12, 12?) is provided on a fill opening (3c) of the core carrier (11) for one-piece current transformer cores (2). Among other things, embodiments pertain to: a removable installation flange (12, 12?) in the form of a two-part clamping flange (12) or in the form of a one-piece rotary flange (12?) that is screwed on the fill opening (3c) similar to a bayonet catch. Among other things, the attained advantages are: radially increased installation space for one-piece current transformer cores (2); reduced diameter (d) for one-piece current transformer cores (2) and reduced structural volume of the current transformer casing (11a).

Abstract: An energy storage coil comprises a core having an electrical conductor wound thereabout in a plurality of turns. The turns define a main zone and at least one first auxiliary zone extending along the core. The main zone has a first end and a second end. The turns in the main zone overlie one another. The first auxiliary zone is arranged adjacent to the first end of the main zone. The turns in the first auxiliary zone are arranged to provide the first auxiliary zone with lower parasitic capacitance from turn to turn than the main zone.

Abstract: A micro-electromechanical system (MEMS) inductor is formed in a saucer shape that completely surrounds a magnetic core structure which is formed from a ferromagnetic material. In addition, an array of MEMS inductors can be formed by dividing up the saucer-shaped MEMS inductor into a number of electrically-isolated MEMS inductor wedges.

Abstract: The invention provides a noise elimination device that can be installed easily on a coaxial cable and that can effectively eliminate noise from both the center conductor and the outer conductor. Coaxial connectors 2 and 3 are provided on both ends of a tube-shaped housing 1 made of an insulator, and a coil made by winding a coaxial cable of thin diameter is around an open magnetic ferrite core is disposed inside the housing 1 and connected to the connectors 2 and 3 at the two ends. The earth-side connector thickness of the outer conductor of the coaxial cable and the connector as well as all earth-side conductors, such as shield members 7 connecting the connectors with the outer conductors of the coaxial cable, is at least 0.1 mm.

Abstract: The invention relates to a bushing-type transformer (1) comprising a conductive element (5) forming the primary conductor, supporting a flat contact surface (7) on one end thereof and a plug-in contact element (8) on the other end thereof, whereby the plug-in contact element (8) is embodied in a rotationally symmetrical manner and the rotational axis is arranged parallel to the flat contact surface (7). Said transformer also comprises a secondary winding (6) which surrounds the conductive piece (5) in an annular manner. The conductive element (5) extends in a linear manner and the plug-in contact element (8) is arranged on the surface area of the conductive piece (5).

Abstract: An electric device comprising at least one core (5, 10) of magnetic material and a high-voltage winding (16) in the form of an electric conductor wound around the core, and a method for manufacturing such a device is described. The device comprises a first insulating layer (14) of a solid, electrically insulating material which encloses the core (10) and which is arranged b between the core (10) and the high-voltage winding (16), and a second insulating layer (18) of a solid, electrically insulating material which encloses the high-voltage winding (16), a semiconductive layer is arranged on both sides of each of the electrically conductive layers.

Abstract: A flux coil system has a first member having a first surface and a first flux coil being disposed in the first member. The flux coil has a first current flowing conduit having a second surface. When current traverses through the first current flowing conduit a first magnetic field is induced. The first surface is adjacent to the second surface such that the first flux coil is in the first magnetic field so that a signal is developed corresponding to the first magnetic field.

Abstract: The magnetic component uses at least two different layers of magnetic material for carrying and amplifying the magnetic flux. The use of two different layers which may, however, have the same material composition allows the magnetic conductors to form a magnetic circuit with a locally matched domain alignment. The magnetic component accordingly allows considerable improvements to be achieved in the component parameter, in particular a considerable increase in the Q-factor.

Abstract: A transformer for substantially matching the impedance of a generator and a load, which is coupled to the generator via a transmission line. The transformer comprises an outer conductor having an inner surface and an inner conductor having an outer surface that is positioned within the outer conductor. The transformer further includes a plurality of transformation sections, where each section provides a particular separation distance between the inner surface of the outer conductor and the outer surface of the inner conductor to yield a particular characteristic impedance for each of the plurality of transformation sections, thereby substantially matching the impedance of the generator to the load.

Abstract: There is provided an arrangement of components for coupling data between a power line and a communication device. The arrangement includes an inductive coupler that employs a power line conductor as a primary winding, a capacitor connected across a secondary winding of the inductive coupler for creating a resonant circuit with the secondary winding at a frequency within a desired frequency band, and an impedance matching transformer for connecting a communications device to the secondary winding. The resonant circuit has a loaded Q consistent with the desired bandwidth. An alternative arrangement includes a capacitor in series with a conductive cylinder between the power line and the communication device, where the capacitor is for blocking power line voltage while passing a signal between the power line and the communication device, and the conductive cylinder appears as a low inductance to the signal.

Abstract: Methods and apparatus are disclosed for a tunable inductor. A coil of electrically conducting material is wrapped around a coilform, preferably generally cylindrical in shape. The coilform is constructed having a threaded portion of screw-like ridges with troughs between the ridges. The coilform may also have an unthreaded portion. The ridges and troughs of the threaded portion may run along substantially all of the coilform or just a portion of the coilform. As the coilform is rotated, the electrical conductor is engaged in the threads, changing the shape of the coil, and thereby also changing the inductance of the coil.

Abstract: An inductive device comprises a coil having a winding and extending along and spaced from an axis, and a pair of lead wires extending internally between the ends of the coil. The lead wires extend externally from one of said ends for connection to an electrical circuit, and form start and finish posts at the other of said ends. The respective ends of the winding are wound on and electrically connected to the posts, for which purposes the posts extend axially away from the coil in spaced relationship.

Abstract: In an I-conductor for the high-frequency or microwave systems, two uniform cores are disposed parallel to each other with a gap therebetween and a coil is disposed on each core in such a way that, when energized by an HF current, a magnetic circuit through the two cores is generated by way of the gap at one end of the arrangement. The magnetic field forming windings are uniform. As cores, magnetically anisotropic materials may be used.

Abstract: The invention relates to an electronic component with inductive and capacitive properties with a core (2) carrying at least one pair of conducting electrodes (4,6), where said electrodes are wound round said core alternating along the length of said core providing inductivity to said component, and where a first electrode(4) and a second electrode (6) of said electrodes face each other on opposing surfaces of said core providing capacity to said component. To provide an electronic component with high inductivity and capacity said core is made of one material featuring a high dielectric constant and high permeability.

Abstract: There is provided an inductor for heating the inner circumference of a hole, by which induction heating of the inner circumference of a hole and so on can be realized rapidly and uniformly in the direction of the circumference, and there is no risk of a short-circuit between a solenoidal coil and transition conductor passing therethrough. According to a configuration in which a magnetic core 12 with a cylindrical shape is arranged inside of a solenoidal coil 11a which forms the inductor 10, and a transition conductor 11c extending from one end of the solenoidal coil 11a to a feeding terminal through the inside of the solenoidal coil is arranged in an inserted manner into a hollow portion of the magnetic core 12, a risk of the short circuit is avoided by using an insulating material for the magnetic core 12, assuming that the magnetic core 12 with a large cross-sectional area is concentrically arranged in the solenoidal coil 11a.

Abstract: An electrical transformer apparatus includes: (a) an electrically conductive hollow rod having a continuous via extending from a first end to a second end; (b) an elongate electrically conductive member traversing the via at least one time; and (c) at least one ferrous member substantially surrounding a portion of the rod.

Abstract: There is provided an arrangement of components for use in a power line communication system. The arrangement includes (a) an inductive coupler having a core with an aperture through which a coaxial power cable is routed, where the coaxial power cable has a center conductor and an outer conductor; and (b) a lead being routed through the aperture, where the lead connects the outer conductor to a termination.

Abstract: A flat high-voltage impulse transformer is proposed, which can be used in conjunction with a high-intensity discharge (HID) lamp to provide a high-magnitude pulsed voltage to ignite the HID lamp. The proposed transformer structure is characterized by the use of an elongated magnetic core that is made of a magnetic material having a substantially square hysteresis loop and whose saturated flux density is at least two times greater than ferrite, and the primary winding is arranged at the middle section of the elongated magnetic core while the secondary winding is arranged at opposite sides of the primary winding on the elongated magnetic core. This feature allows the transformer of the invention to provide a better voltage transforming effect, and also allows the transformer of the invention to be made more flatted in profile to provide a compact size.

Abstract: There is provided an arrangement of components for coupling data between a power line and a communication device. The arrangement includes an inductive coupler that employs a power line conductor as a primary winding, a capacitor connected across a secondary winding of the inductive coupler for creating a resonant circuit with the secondary winding at a frequency within a desired frequency band, and an impedance matching transformer for connecting a communications device to the secondary winding. The resonant circuit has a loaded Q consistent with the desired bandwidth. An alternative arrangement includes a capacitor in series with a conductive cylinder between the power line and the communication device, where the capacitor is for blocking power line voltage while passing a signal between the power line and the communication device, and the conductive cylinder appears as a low inductance to the signal.

Abstract: There is provided a method for blocking a portion of energy of a signal in a power line. The method includes equipping a high frequency magnetic core with a coil, connecting a capacitor across terminals of the coil to create a resonant circuit that resonates at a frequency of the signal, and placing the magnetic core around the power line, at a location where the blocking is desired.

Abstract: There is provided an inductive coupler for coupling a signal to a power line. The inductive coupler includes a magnetic core for placement about the power line, a coil wound around a portion of the magnetic core, and a semiconducting coating that encapsulates the core and contacts the power line. The signal is coupled to the coil.

Abstract: A coil system whose coil arrangement comprises a plurality of coaxially sequentially placed individual coil, whose wire ends are fixed on a board strip extending along the coil arrangement with a simultaneous making of contact with an electrical circuit formed thereon. Furthermore, a method for the manufacture of such a coil system and an electrodynamic linear drive fitted therewith are provided.

Abstract: A remote feeder reactance coil and a signal transmission system. The invention relates to a remote feeder reactance coil (100) for energy input and output in signal transmission lines, as well as in signal transmission systems including signal transmission lines, where intermediate amplifiers are supplied with electrical energy via said signal transmission lines.

Abstract: A current transformer fixing device comprises a current transformer cylinder surrounding the periphery of a central conductor to be connected to an electric power line, a cylindrical container surrounding the outer peripheral side of a current transformer arranged on the outer peripheral side of the current transformer mounting cylinder and containing the current transformer, a transformer mounting plate connecting the bottom side of the current transformer mounting cylinder and the bottom side of the cylindrical container to each other and restricting axial movement of the current transformer, a sealing flange connected to the upper end of the cylindrical container with a gap between the sealing flange and the upper end of the current transformer mounting cylinder, and fixing bolts fastened to the sealing flange in an axial direction of the conductor and restricting axial movement of the current transformer.

Abstract: An ignition coil for a spark ignition internal combustion engine has a central core. The central core is cylindrical in shape, and includes a plurality of laminations composed of magnetically-permeable plates that are sector-shaped. The sector-shaped laminations improve the fill percentage allotted for core material. The central core has a central bore extending therethrough that allows a return of a primary winding lead, allowing an odd number of primary winding layers.

Abstract: A magnetic circuit (1) with coil having an electric coil (2) and a magnetic core (3), the coil (2) comprising a conducting wire (6) and an end plate (4) and connector (5) being arranged at respective ends of the coil (2). The coil is mounted on the magnetic core (3) which is formed of a tore-shaped magnetic wire.

Abstract: A coaxial inductive power transfer and distribution apparatus includes a stationary primary conductor and a mobile secondary coil magnetically coupled together to provide for inductive power transfer therebetween. A return conductor that is stationary is mechanically coupled to the primary conductor and ensures the position stability of the primary conductor with respect to the moveable secondary coil. The return conductor also includes an air gap in which a support member for the mobile secondary coil is disposed within. The mobile secondary winding includes a high permeability toroidal core that is coaxially disposed about, and spaced apart from, the primary conductor. A multi-turn coil is radially disposed about the high permeability toroidal core. The support member for the mobile secondary winding extends through the air gap in the return conductor to the exterior of the return conductor, where it may be coupled to an electric vehicle.

Abstract: The planarization of inductive components by reducing standard coiled designs to single turn, open ended designs from which the required parameters are obtained by scaling the length. Single turn designs having magnetic material encircling the conductors along their full length enable the thinnest form. The single turn, open ended form also enables the inductive component to be routed according to any shape in the plane or on any conformal surface. The single turn inductors do not need to coil hence there is no overlap necessary in the plane. The planar form allows integration of inductive components with integrated circuits. These inductive components can be embedded in other materials. They can also be fabricated directly onto parts.

Abstract: In a three-phase current transformer, a plate adaptor includes first to third coil insertion slots and is a magnetic shield. First to third Rogowskii coils are arranged in the first to third coil insertion slots. The metal adaptor is fixed with a phase-to-phase magnetic shield and an outer peripheral magnetic shield. An end magnetic shield is fixed to an end portion of the phase-to-phase magnetic shield.

Abstract: A voltage and current sensor comprised of a plurality of surface mounted inductors serially connected around the circumference of a current carrying conductor and a plurality of surface mounted resistors each connected in parallel with an inductor wherein an electrical circuit connected to the inductors and resistors provide a measurement of current in the conductor. The inductors and resistors are mounted on a printed circuit board that has a plated aperture for receiving the current carrying conductor there through. An electrical circuit connected to the plated aperture provides a voltage measurement.

Abstract: A coaxial inductive power transfer and distribution apparatus is disclosed that includes a primary conductor that is stationary and a mobile secondary coil magnetically coupled to the stationary primary conductor to provide an inductive power transfer therebetween. The primary and secondary coils are disposed within a return conductor that is stationary and acts as a return path for current flowing in the primary center conductor. The primary conductor is mechanically connected to the interior surface of the return conductor to ensure the position stability of the primary conductor with respect to the secondary coil. The return conductor also includes an air gap in which a support member for the mobile secondary coil and structure is disposed within. The mobile secondary coil and structure includes a toroidal core composed of a high permeability material that is coaxially disposed about, and spaced apart from, the primary conductor.

Abstract: The present invention provides a multipurpose input device installed at a front stage of a power supply circuit. The multipurpose input device is formed by winding a fusible/resistance winding around a magnetic component having a high resistivity and a high permittivity. The fusible/resistance winding has the functions of a fusible link, an inrush current limiter, and an EMC choke. The conventional three separate subassemblies can be replaced with the multipurpose input device of the present invention to reduce the cost and shrink the volume. The present invention also conforms to the requirements of safety and EMC.

Abstract: A current transformer fixing device comprises a current transformer cylinder surrounding the periphery of a central conductor to be connected to an electric power line, a cylindrical container surrounding the outer peripheral side of a current transformer arranged on the outer peripheral side of the current transformer mounting cylinder and containing the current transformer, a transformer mounting plate connecting the bottom side of the current transformer mounting cylinder and the bottom side of the cylindrical container to each other and restricting axial movement of the current transformer, a sealing flange connected to the upper end of the cylindrical container with a gap between the sealing flange and the upper end of the current transformer mounting cylinder, and fixing bolts fastened to the sealing flange in an axial direction of the conductor and restricting axial movement of the current transformer.

Abstract: An improved formable coil for an AC sensor having a predetermined length and a predetermined number of turns. The coil is wound in multiple passes in opposite directions, with a predetermined number of passes in each direction to fill in any gaps and provide a stable helical-wound coil. A preferred embodiment is wound on a collapsible mandrel to facilitate free removal of the coil from the mandrel.

Abstract: There is provided an inductor for heating the inner circumference of a hole, by which induction heating of the inner circumference of a hole and so on can be realized rapidly and uniformly in the direction of the circumference, and there is no risk of a short-circuit between a solenoidal coil and transition conductor passing therethrough. According to a configuration in which a magnetic core 12 with a cylindrical shape is arranged inside of a solenoidal coil 11a which forms the inductor 10, and a transition conductor 11c extending from one end of the solenoidal coil 11a to a feeding terminal through the inside of the solenoidal coil is arranged in an inserted manner into a hollow portion of the magnetic core 12, a risk of the short circuit is avoided by using an insulating material for the magnetic core 12, assuming that the magnetic core 12 with a large cross-sectional area is concentrically arranged in the solenoidal coil 11a.

Abstract: An induction apparatus includes a winding arrangement having a winding start and a winding end for inducing a magnetic field in a magnetizable core; and a lossy, magnetizable device through which and/or about which the winding start and the winding end of the winding arrangement is so disposed as to induce a magnetic flux in the magnetizable device. This arrangement prevents an electric breakdown at the star point of winding strands of synchronous motors.

Abstract: Inductive microcomponent (1), such as a microinductor or microtransformer, comprising a metal winding (2) having the shape of a solenoid, and a magnetic core (4) including a strip made of a ferromagnetic material, positioned at the center of the solenoid (2), and characterized in that the core comprises at least one additional strip made of a ferromagnetic material (13), separated from the other strip (12) by a spacer layer (14) made of a non-magnetic material, the thickness of which is such that the strips (12, 13) located on either side of the spacer layer (14) are antiferromagnetically coupled.

Abstract: Inductive microcomponent (1), such as a microinductor or microtransformer, comprising a metal winding (2) having the shape of a solenoid and a magnetic core (4) made of a ferromagnetic material positioned at the center of the solenoid (2), wherein the core (4) consists of several sections (13-16) separated by cutouts (17-19) oriented parallel to the main axis (20) of the solenoid (4).

Abstract: A choke coil is provided with a coil formed of a conducting wire covered by an insulating coating and wound in a coil shape; a conducting ring provided one on both ends of the coil; and a bar-shaped core formed of ferrite, ceramic, or the like and penetrating the coil. The ring has a prescribed width and has a centerline extending in the axial direction of the core.

Abstract: A sensor for detecting RF current flowing in a conductor includes a layer 10 of insulating material with a hole 16 for the passage of the RF conductor 18 in a direction normal to the layer. A plurality of conductive tracks 20, 22 (FIG. 3) on the opposite major surfaces of the layer are selectively joined by a plurality of through-holes each containing conductive material. The conductive material selectively connects the conductive elements 20, 22 to form a plurality of loops (FIG. 4) disposed non-parallel to the layer 10 for inductive coupling to the RF conductor 18.

Abstract: An inductive sensor on the basis of an annularly closed, soft-magnetic core (K) is disclosed wherein the current to be measured produces an inductive change within the annularly closed magnetic circuit, said inductive change being taken via a measurement winding (MW) wrapped around the core. In order to achieve a linear behavior within a broad range of measurement, the annularly closed core comprises core regions (KB) that comprise a magnetic composite powder material and, in particular, a ferrite polymer composite material (FPC).

Abstract: Noise absorbers (11), which comprise two casing halves (16,17) foldable together around a cable and containing ferrite half-rings, are fixed to a cable (13) in that, prior to the closing of the casing halves, the cable is pressed between two parallel fixing edges (34) of a fork-like projection (32) on one casing end wall (21). The two legs (33) of the fork project over the casing parting line (27), but pass in front of the end wall (21) of the second casing half (17). The cable is laterally compressed somewhat by the substantially parallel faxing edges (34), which ensures a reliable longitudinal fixing to the cable, which does not damage the latter, of the noise absorber made relatively heavy by the elements. Assembly is significantly facilitated in that the definitive fixing takes place prior to the closing of the casing halves and following the folding together of the casing halves no elastic bursting force remains, which attempts to force apart said casing halves.

Abstract: A choke coil is provided with a coil formed of a conducting wire covered by an insulating coating and wound in a coil shape; a conducting ring provided one on both ends of the coil; and a bar-shaped core formed of ferrite, ceramic, or the like and penetrating the coil. The ring has a prescribed width and has a centerline extending in the axial direction of the core.

Abstract: Inductive microcomponent (1), such as a microinductor or microtransformer, comprising a metal winding (2) having the shape of a solenoid and a magnetic core (4) made of a ferromagnetic material positioned at the center of the solenoid (2), wherein the core (4) consists of several sections (13-16) separated by cutouts (17-19) oriented parallel to the main axis (20) of the solenoid (4).