Abstract: Disclosed herein is a method of fabricating a high frequency thin film coil element having a main coil body composed of a rod shaped ceramic substrate, a thin metallic film layer covering the ceramic substrate, a conductor layer covering the thin metallic film layer, and a plurality of notches which being cut from the conductor layer down to the substrate thereon, and conductor terminals provided at two sides of the main coil body. A protecting layer covering the main body and an anti-oxidation layer, being cut in the similar way as the conductor layer, are sandwiched between the conductor and protecting layers of the main coil body.

Abstract: In a transformer (13) having a primary winding (19) and a secondary winding (20) and a primary magnet core (21) with at least one primary end face (22) and a secondary magnet core (23) with at least one secondary end face (24) and insulation means in a gap (25) between the at least one primary end face (22) and the at least one secondary end face (24), the insulation means are formed with the aid of a mounting plate (26) which is suitable as a mounting plate (26) for a printed circuit.

Abstract: An integrated circuit and method of manufacturing therefor. In one embodiment, the integrated circuit includes a substrate with an insulator and a capacitor formed over the substrate. The integrated circuit further includes an adhesive formed over the insulator. The integrated circuit still further includes a micromagnetic device. The micromagnetic device includes a ferromagnetic core formed over the adhesive. The adhesive forms a bond between the insulator and the ferromagnetic core to secure the ferromagnetic core to the substrate. The micromagnetic device also includes at least one winding, located proximate the ferromagnetic core, to impart a desired magnetic property to the ferromagnetic core. The micromagnetic device is electrically coupled to the capacitor.

Abstract: A magnetic core assembly and method of assembling a magnetic core assembly. The core assembly includes laminated magnetic core tightly clamped together by a pair of unitized flanged clamps. Each unitized flanged clamp has a generally flat surface and a peripheral flange. The generally flat surface defines at least one opening for receiving a coil and a number of holes adjacent the opening for receiving assembly hardware. The core is assembled by placing a first one of the two unitized flanged clamps, flange down on a generally horizontal work surface. Alignment pins are placed in one or more of the assembly hardware apertures adjacent the coil opening. The segments of the first core lamination are slidably placed on the alignment pins such that they lie on the flat surface of the first unitized flange clamp. The segments of each remaining core lamination are slidably placed on the alignment pins until the required number of laminations have been installed.

Abstract: A current transformer assembly comprises a toroidal core and a conductor having a body portion and a mounting portion. The conductor's body portion extends through the aperture of the toroidal core. The mounting portion is positioned for a mechanical and electrical connection between an external conductor and the current transformer. A connection is made between the body portion and the mounting portion wherein mechanical engagement is sufficient to prevent unintended separation of the body portion from the mounting portion and electrical coupling is sufficient to permit the flow of current between the body portion and the mounting portion.

Abstract: An inductance device wherein a conductor film is formed on a base, grooves are formed in the conductor film, a protective material is disposed on the grooves, and a length L1, a width L2 and a height L3 of the inductance device satisfy-the following relation:L1=0.5 to 1.5 mm;L2=0.2 to 0.7 mm; andL3=0.2 to 0.7 mm.

Abstract: A miniature electromagnetic relay is capable of increasing the coil packing density, yet assuring electrical insulation of the coil from a core of the electromagnet. The relay includes a pair of movable and fixed contacts, an armature carrying the movable contact, and an electromagnet block having an excitation coil which moves the armature for closing and opening the contacts upon being energized. The electromagnet block includes a generally U-shaped core with a center core and a pair of yokes extending from opposite ends of the center core, flanges of dielectric material molded respectively around portions of the yokes, and a dielectric tape fitted around the center core over substantially the entire length of the center core to receive therearound the excitation coil in an electrically insulating relation from the core.

Abstract: An inductance device wherein a conductor film is formed on a base, grooves are formed in the conductor film, a protective material is disposed on the grooves, and a length L1, a width L2 and a height L3 of the inductance device satisfy the following relation:L1=0.5 to 1.5 mm;L2=0.2 to 0.7 mm; andL3=0.2 to 0.7 mm.

Abstract: An inductive coupling apparatus charges a storage device in an electric car by means of an external power source apparatus. The inductive coupling apparatus includes a coil unit assembly comprising a primary coil unit (10) and a secondary coil unit (20). The primary and secondary coil units (10, 20) comprise primary and secondary coils (12, 22) and primary and secondary cores (11, 21) for supporting the respective coils (12, 22). Spacers (13, 23) are mounted on arms (11A, 21A) of the cores (11, 21) of the units (10, 20) so that the coils (12, 22) are spaced apart from the peripheral surfaces of the arms (11A, 21A), thereby forming gaps (11D, 21D) between the arms (11A, 21A) and the coils (12, 22) to flow a cooling medium such as air therebetween. When the coils (12, 22) radiate a heat upon charging, the cooling media which flow in the gaps (11D, 21D) absorb the heat from the cores (11, 21).

Abstract: A method of providing a predetermined set distance apart between two members in article manufacture. This involves clamping the members together with a mixture of an adhesive and glass microspheres between opposing surfaces of the members, the microspheres being of specific grid size. The largest diameter microspheres are gripped between the opposing surfaces thereby determining the distance between the members. The invention is particularly useful for precise location apart between members with small gaps therebetween, e.g. less than 3 mil. It is useful particularly for magnetic device cores of small dimensions.

Abstract: The present invention relates to a line filter that is characterized by suppressing magnetic adverse effects inflicted on other components due to leakage magnetic fluxes from the closed magnetic circuit core used in the line filter and at the same time preventing noises from infiltrating into the closed magnetic circuit core. The line filter comprises a synthetic resin made bobbin (5) having flanges (2) on its both ends and a through hole (20) along its axis, a square shaped closed magnetic circuit core (1) with one of its magnetic legs inserted in the through hole (20) of the bobbin (5), windings (6) wound between both flanges (2) of the bobbin (5) in the direction perpendicular to the bobbin's axis, metal terminals (9) embedded in the flanges (2) and connected with the windings (6) and a wobbling preventive means to prevent the closed magnetic circuit core from wobbling.

Abstract: A modular current transformer containing both air and metal cores on a common load strap provides sensing current to the electronic trip unit within the circuit interrupter along with supplying operating power to the trip unit components. The current sensing coil is arranged concentricity within the transformer core while the power generating coil is arranged concentricity outside the core.

Abstract: A line filter includes a magnetic core having a leg. A bobbin is placed around the leg of the magnetic core. The bobbin has end collars provided with projections respectively. A pair of windings are provided on the bobbin. A molded casing made of resin houses the magnetic core, the bobbin, and the windings. The casing has movable tongues which engage the projections on the bobbin collars to fix the bobbin to the casing. The casing has inner surfaces formed with ribs which engage the magnetic core to fix the magnetic core to the casing. The casing has an L-shaped movable member extending from a ceiling thereof and engaging the magnetic core to fix the magnetic core to the casing.

Abstract: An inflatable high Q toroidal inductor is fabricated from an inflatable tidal-shaped shell made from a flexible material provided with a fitting adapted to receive and vent pressurized gas. A pair of flexible strips are disposed on opposite sides of the inflatable toroidal-shaped shell to hold litz windings in a predetermined toroidal configuration to thereby provide a suitable inductor of high Q and low loss. The inductor may be compactly carried to a remote instrumentation site, inflated and used and then deflated, folded and taken to the next site for reuse.

Abstract: A combined terminal block mount and lamination stack keeper has a metal keeper with a flat first portion of a size and shape to lie contiguous to and oriented with a stack of laminations. A part of the stack of laminations is adapted to receive an inductance coil, and the coil is adjacent a part of the keeper first portion. There is a bend in the keeper to establish a unitary mounting strip out of the plane of the keeper first portion, and the mounting strip has a width and thickness to mount a terminal block thereon. The foregoing Abstract is merely a resume of general applications, it is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: A transformer core-coil frame attachment and ground. The core-coil is mounted on a metal frame with flanges extending along the bottom of the frame. Nonconductive support members in the form of channels are mounted on the flanges of the cross member to support the coil to relieve stresses and reduce the no-load electrical losses. The nonconductive support members have a profile shaped for ease in receiving and retaining the support members on the flanges of the cross member. The frame has an opening in the bottom for receiving a mounting boss protruding above the tank bottom of the transformer to locate the core-coil within the tank and resist movement of the core-coil within the tank in a horizontal plane. A compressible grounding structure is attached to the bottom of the core which allows for variation between the core and frame.

Abstract: A single phase, dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes a means to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.

Abstract: A modular current transformer containing both air and metal cores on a common load strap provides sensing current to the electronic trip unit within the circuit interrupter along with supplying operating power to the trip unit components.

Abstract: A high voltage transformer for a television receiver includes a coil former supporting a primary winding on a magnetic core. The primary winding has an axial length L. A compartmentalized coil former supports a high voltage coil radially surrounding the primary winding. The high voltage coil has a radial outer diameter D with the ratio of L/D being less than one. A plurality of diodes are supported by the compartmentalized coil former and connect the high voltage coils in series. The diodes are supported on the compartmentalized coil former at substantially the same axial position and are equally spaced about the periphery of the compartmentalized coil former.

Abstract: An ignition coil is disclosed that includes a primary coil, a secondary coil and a core about which the primary and secondary coil are disposed. The secondary coil has in inner diameter greater than the diameter of the primary coil. The primary coil is disposed on the core and the secondary coil is disposed about the primary coil. The secondary coil includes a spiral-back pyramid winding configuration which results in a desired distributed capacitance for the secondary windings thereby providing desired electrical characteristics for a resonant circuit. The winding layers of the secondary coil decrease in the number of turns as the coil is wound to achieve a desired distributed capacitance of the coil. A spiral-back winding technique decreases adjacent winding layer voltages so that the inter-layer insulation requirements are reduced to a lower value thereby decreasing the insulation thickness of the secondary coil.

Abstract: A multi-layer substrate which should be used with an inductor. The multi-layer substrate has an internal coil which should be connected with the inductor electrically. The internal coil has such an inductance value that the total inductance of the inductor and the internal coil will be a specified value.

Abstract: A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes an apparatus to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.

Abstract: The disclosure discusses impedance matching circuits based on parallel-resonant L-C tank circuits, and describes a low-loss design for an adjustable inductance element suitable for use in these parallel tank circuits. The application of an impedance matching circuit to a plasma process is also disclosed; in this context, a local impedance transformation circuit is used to improve power transfer to the plasma source antenna.

Abstract: A transformer (202) has a bobbin (2) which has an inner portion (104) supporting an inner electrical winding (140) and having a magnetic core recess. The inner portion is located within an outer portion (4) supporting an outer electrical winding (40). The inner portion further has an end with a termination connected to the inner winding, an annular recess (126) in which the inner winding is situated, and a channel (132) communicating between the termination end of the inner portion and a remote end of the annular recess. The channel is positioned radially inwardly of the first annular recess and accommodates a portion of the inner winding. By providing the channel radially inwardly of the annular recess, winding wire can extend between the termination end of the inner portion and the remote end of the annular recess across the annular recess without significantly increasing the size of the inner portion and without increasing the gap between the inner and outer portions.

Abstract: A reactor having a coil surrounded by a magnetic shield formed of laminated magnetic sheets. Connecting members pass through the central opening of the coil and are clamped between sheets of the magnetic shield. Each connecting member comprises a pair of connecting plates having opposite ends expanded. They are inserted from opposite sides of the central opening of the core, and are fixed together. The expanded parts at both ends of the connecting member increases the friction, and reduces vibration and noises.

Abstract: A cradle or sling of banding strap material supports a wound magnetic core from an upper fixed support to at least partly relieve the weight of the core on the transformer winding and to permit the core to assume a more relaxed shape to reduce its internal stress and thus AW and TW core losses.

Abstract: A mold locator is adapted to support and position a wound electromagnetic coil within a mold for encapsulation of the coil by dielectric media. In one preferred form, the locator includes an annular central body having arms extending radially from the central body. In addition to having a pair of stiffening ribs extending along the sides thereof, each arm incorporates a channel for carrying a wire lead. The central body is annular in shape and defines an interior wall having a plurality of radially extending detents adapted to make point contacts with a centering arbor in the mold. Similarly, each radially extending arm of the mold locator incorporates at least one detent adapted to make a point contact with the floor or bottom of the mold cavity. Collectively, the detents operate to limit surface contact between the locator and the internal surfaces of the mold.

Abstract: A stationary induction electric apparatus and a method for manufacturing the apparatus is disclosed. The apparatus comprises a reinforcement frame to be mounted on an inner peripheral surface of a rectangular core, a protective cover for covering both of the rectangular core and the reinforcement frame, a reinforcement band to be wound on an outer peripheral surface of the rectangular core on which the protective cover is mounted, and windings to be fitted on the leg portion of the rectangular core on which the reinforcement frame, the protective cover, and the reinforcement band are mounted.

Abstract: A coil (33, 33a) is wound on a bobbin (22, 22a), one flange (24, 24a) of which has an end surface provided with a central projection (26, 26a) on its center and first and second end projections (27, 27a; 28, 28a) on its opposite end portions respectively, thereby to define first and second cavities (29, 29a; 30, 30a). First and second electrodes (31, 31a; 32, 32a) are provided to extend from the first and second end portions of the flange toward its side surface. First and second terminals (34, 34a; 35, 35a) of the coil are respectively received in the first and second cavities, which in turn are filled with solder members (36, 36a; 37, 37a) to electrically connect the first and second terminals to the first and second electrodes respectively. The first and second end projections are adapted to reduce the volume of solder required for mounting the chip-type coil element as well as to substantially prevent the coil element from inclination, thereby to prevent a tombstoning phenomenon.

Abstract: A stator assembly is associated with a rotor to form an alternator. The stator assembly has pole legs with pole faces, past which magnets on the rotor rotate. At least one coil bobbin with a coil thereon is slidably received over at least one of the pole legs, said at least one pole leg having a notch in a side thereof. A bobbin locking clip is positioned in a gap between a central aperture wall of the bobbin and the one side of the pole leg having the notch. The clip of springy material has two springy tabs for engagement in the notch and an embossment on a main body surface thereof, so as to provide three-point contact. The bobbin and coil to be wound thereon can be manufactured separate from the stator assembly, and then the bobbin with the coil can be slid on the pole legs after assembly. The stator is also assembled such that rivets are provided at a central portion, and rivets are provided near end faces of pole legs on which bobbins are not provided.

Abstract: A transformer comprising a tank having side walls, a core including first and second generally vertical portions and upper and lower generally horizontal portions defining a core window, first and second coils respectively wound around the first and second vertical portions, and an I-beam which extends through the core window, which is supported by the side walls of the tank, and which includes an upper flange supporting the upper portion of the core, a lower flange supporting the coils, and a vertical web separating the coils.

Abstract: A fixture for defining the window of a jointed magnetic core, which core is constructed of amorphous metal alloy, and methods of constructing such a fixture. The fixture includes first and second substantially U-shaped metallic frame members which are easily and quickly assembled with interlocking joints which positively maintain the desired geometric configuration of the core window, as well as the peripheral dimension thereof. Notwithstanding the high mechanical strength of the fixture, the interlocking joints are easily unlocked, which feature is necessary as the fixture will be required to be assembled, disassembled, and reassembled as part of the normal processing of the magnetic core. New and improved methods of constructing the fixture enable the same tooling to be used for different sizes of fixtures, which are required to cover the range of transformer ratings the magnetic cores will be an integral part of.

Abstract: An electric transformer includes a magnetic circuit and, for each phase, an electrical winding including at least one coil, wherein each electrical winding is made of a good conductive material wire or band, notably aluminum, wound about a wheel rim-shaped annular former. Each magnetic circuit is made of at least one elementary circuit, provided by coiling a magnetic metal strip of constant width, and is formed with a window for the passage of the corresponding winding or windings, has the shape of an irregular polygon with an axis of symmetry. The magnetic circuits are positioned and maintained on a support plate allowing the passage of the windings.

Abstract: A transformer with E-shaped and I-shaped magnetic cores which are respectively formed of a stack of E-shaped sheet laminations and a stack of I-shaped sheet laminations, includes sheet insulators to insulate coils from the magnetic core. Spacer members are formed from parts of the sheet insulator to hold the preferable distance between the coil and a central leg of the E-shaped magnetic core. The spacer members are each formed by folding parts of the sheet insulator.

Abstract: An improved magnetic core for an electrical transformer, and a method and apparatus for forming the core, are disclosed wherein the corners of core windows are configured to decrease the magnetic path length, thereby reducing the core losses and the amount of material necessary to construct the core. One exemplary embodiment includes a core window opening having an outer corner radii that are larger than the inner corner radii. Alternatively, the core window may have corners of a non-constant radii, with the outer corners having a more gradual or gentle curvature. These and other disclosed embodiments also enhance the ease of assembly of the transformer core and thus decrease or eliminate damage to the magnetic material during assembly.

Abstract: Transformer, including an iron core, high voltage and low voltage windings, at least one cast resin body completely embedding, holding and insulating the windings, the cast resin body having cooling channels formed therein and having additional channels formed therein being separated from the cooling channels, and insulating gas filling the additional channels.

Abstract: A field coil insulation shield for a motor or generator is made of a single sheet of insulating material, and defines portions which substitute for the paper insulator conventionally disposed around a field pole and between a field coil and a motor frame, and portions which substitute for individual wrappings with tape to form the field coil and to protect it from the structure of the field pole which holds it in position. The portions which substitute for a wrapping of tape are provided with elongated projections which are latchingly received around the edge of a central aperture, through which the field pole passes.

Abstract: A high voltage reactor includes a plurality of angularly spaced columns for supporting the layers of a disk winding in vertically spaced relation. Each of the columns is comprised of a monolithic casting of an insulative material and pairs of angularly spaced, rigid plastic casting forms disposed between each winding layer. The form pairs are in vertical alignment to establish requisite layer-to-layer and turn-to-turn separations, as well as to provide the sidewalls of a casting mold utilized in forming the column. The forms thereafter remain in place to constitute the column sidewalls.

Abstract: In a high power density transformer composed of a core and a coil assembly unit (or two such units), with the coil assembly unit including a primary winding, a secondary winding, a coil carrier supporting the windings, an insulating system, and a metal shield between the primary and secondary windings which is in electrically and thermally conductive connection with a metal grounding structure so that the metal grounding structure constitutes a support for the coil assembly, the metal shield serves as the coil carrier which is disposed directly on the metal grounding structure.

Abstract: A unique design and method of construction is presented for a spacer and support suitable for use in maintaining one or more electrical conductors at a fixed distance from one another while permitting dielectric fluid to flow therebetween. The spacer is formed from two major parts: a foraminous container and a void filling means. The foraminous container defines a plurality of flow apertures around its periphery, and at either end, into which dielectric fluid is free to flow. The container is filled with a void filling means formed from a plurality of generally incompressible filler elements or nodules. The filler elements are packed into the container so as to maintain the correct spacing. The nodules or filler elements are sufficiently large that they remain confined within the container. Dielectric fluid fills the interstices between the void filling means and the container walls.

Abstract: An integrally molded coil assembly extends about the intermediate leg, and is wedged between the outer legs of an E-frame magnet. It has rigid interior walls and top and bottom flange portions. Flexible flange extensions extend from the sides of the flange portions. The extensions are coplanar with the flange portions during the coil winding operations, and are bent in overlapping relationship during assembly of the coil form on the magnet. The flange portions are dimensioned so that the extensions are tightly wedged against the outer legs.

Abstract: A terminal housing having integral coil supporting means for a toroidal coil comprises a coil support portion having a coil locating post extending therefrom which is received in the center opening of the coil. The housing is integral with a deformable housing support arm which is spaced from and extends parallel to the locating post. The housing has terminal-receiving cavities therein which receive the terminals that connect the coil wires to the insulated wires extending from a cable. After these connections are made, the housing is moved against one side of the coil and is latched to the upper end of the locating post by integral latching means so that it extends across the coil. The housing and the lower end of the locating post have additional latching means so that a coil having a support and housing thereon can be stacked against identical coils and housings, and latched to the adjacent coils.

Abstract: A device for the attachment of insulating collars in the yoke insulation build-up of insulating spacers in transformers with the yoke insulation arranged between the core yoke and the winding ends wherein the respective surfaces of the spacers facing each other are provided with recesses and elevations respectively for fixedly holding the portion of the insulating collars located between two spacers in the yoke insulation.