Abstract: A transformer with an associated heat-dissipating plastic element is provided. The transformer includes a hollow main body, a core, a coil and a heat-dissipating plastic element. The core is installed inside the hollow main body while the coil wraps around the core. The heat-dissipating plastic element is also installed inside the hollow main body. The heat-dissipating plastic element encloses the core and the coil. Alternatively, the heat-dissipating plastic element encloses the hollow main body, the core and the coil so that heat generated by the coil may be directly conducted away to the exterior through the heat-dissipating plastic element.

Abstract: A coil device comprises at least one edgewise winding of a rectangular insulated wire and a holder on which the winding is mounted. The holder includes a plurality of terminal sections each composed of a terminal pin having one end portion adapted to be inserted in a printed circuit board, and having the other end portion embedded in the bottom side of a base section of the holder and connected to the winding. The holder further includes two side walls each having a wire path on at least one of its both sides. Each wire path has a curve guide at its lower end, and the rectangular wire is elastically curved along the curve guide and has its termination crooked and hooked around the other end portion of the terminal pin.

Abstract: A housing for a transformer is disclosed. According to one embodiment, the housing includes a top portion, and first, second, third and fourth side portions connected to the top portion. The side portions define an opening. The third side portion includes a first alignment tab and the fourth side portion includes a second alignment tab. The housing also includes first, second, third and fourth termination legs. The first and second termination legs are proximate the third side portion, and the third and fourth termination legs proximate the fourth side portion. A transformer may be disposed in the opening defined by the side portions of the housing.

Abstract: With an ignition coil module comprising a coil system which includes a primary winding and a secondary winding and a flux conducting, soft magnetic device to increase and/or to conduct a magnetic flux generated by one of the windings and comprising an electronic component to control the coil system which has an electrical circuit and a heat sink to cool the electronic component, at least one section of the heat sink is connected to a section of the flux conducting device in a thermally conductive manner such that waste heat of the electronic component can be dissipated over the section of the flux conducting device.

Abstract: An ignition apparatus includes a central core extending along a main axis, and a primary winding disposed radially outwardly thereof. The ignition apparatus further includes a secondary winding. The primary winding has a greater axial length than the secondary winding, this additional axial length being implemented on the low-voltage axial end of the ignition apparatus, relative to the main axis. The extended primary winding provides an increased leakage inductance spike, which may be used by an ion sense system to (i) obtain increased bias voltages, and, (ii) increase the effective turns ratio, thereby reducing the amount of wire required for the secondary winding.

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: A circuit module has a circuit board on which electronic components are mounted and a covering member which has a plate portion and one or more supporting portions. The supporting portions fix the plate portion parallel to the surface of the circuit board. The covering member can be chucked by a chucking device to mount the circuit module to a mother circuit board.

Abstract: A housing for an electronic component has a set of walls for surrounding the component. The component is snap-fitted into the housing to retain it in the housing through snap-fit features in the housing and snap-fit features on the component. The housing can incorporate springs which, in use, bias the component into contact with the snap-fit features. If the component is a transformer, the springs can act on the transformer laminations to press the stack of laminations together while biasing the component into contact with the snap-fit features.

Abstract: A transformer includes an end, and electrical insulator bushings are attached to and extend away from the end of the transformer. Conductors extend from the electrical insulator bushings. A cover has openings and an attachment end affixed to the transformer. The cover shields the end of the transformer and the electrical insulator bushings preventing animals from alighting on the end of the transformer and the electrical insulator bushings. The conductors each extend through one of the openings of the cover. The cover has an access panel movable between a closed position and an open position permitting access to the end of the transformer and the electrical insulator bushings without having to detach the attachment end of the cover from the transformer.

Abstract: A coil assembly includes a spool having a wire wound therearound to establish a coil. A spool terminal extends from the spool and the end of the wire is wound around the spool terminal. A connector housing is coupled to the spool and a connector terminal extends therefrom. A portion of the connector terminal is adjacent to a portion of the spool terminal. Thus, the connector terminal can be relatively easily resistance welded or soldered to the spool terminal.

Abstract: A transformer container comprising a transformer tank having a bottom, a front forward panel, two side panels, a rear panel and a top panel. The top panel forms a rim defining a portal for accessing to the interior of the transformer tank. The transformer tank is supported on a pad. A transformer sill is connected to and supported on the pad and is connected to the transformer tank adjacent the front panel. A transformer door is pivotally connected to the top panel of the transformer tank. The transformer door is supported on the transformer sill and may be locked thereto in a closed position. The transformer door, the pad and the transformer tank form an enclosure. The top panel of the transformer tank defines a plurality of holes. The front panel of the transformer tank is connected to the top panel of the transformer tank between the holes and the access portal, thus the holes communicate with the enclosure and not the interior of the transformer tank.

Abstract: A sound-insulating device for a stationary induction machine with an active part, an insulating fluid surrounding the active part, and a tank enclosing the insulating fluid. The sound-absorbing device includes a gas-filled cavity and a resilient member surrounding the gas-filled cavity, thus obtaining a sound-insulating device that is extremely compressible. In the induction machine, the device is arranged between the active part and the tank of the induction machine and is spaced from the inside of the tank. The sound-insulating device preferably has an extent in one plane, whereby the device has a membrane portion facing the active part and a membrane portion facing the tank. Preferably, at least one of the membrane portions has at least one corrugated region, and a spacing membrane is arranged in the cavity making contact with the membrane portion at at least two points.

Abstract: An ignition coil has a connector electrically connected to an external circuit, an igniter for accommodating a switching element adapted to cause a current supplied from the connector to be intermittent, a primary coil portion for generating a predetermined voltage by the intermittent current, a secondary coil portion for stepping up the generated voltage and applying the resulting voltage to an ignition plug, and a resin insulating material which hardens in between the primary coil portion and the secondary coil portion to ensure insulation between the primary coil portion and the secondary coil portion. An outer shell of the igniter is formed of the resin insulating material.

Abstract: An ignition coil includes a housing which contains a central core portion, an inner spool having a first winding, and an outer spool having a second winding. The inner spool extends outward of the central core portion. The outer spool extends outward of the inner spool. A locating member includes a locating rib adjacent to an upper portion of the central core portion. The locating rib is in a gap between the inner spool and the central core portion, and locates the inner spool and the central core portion relative to each other. Insulating resin injected into the housing provides insulation among parts in the housing. At least one of the inner spool and the locating member has a void-escape passage which connects the gap and an outside of the inner spool with each other, and which allows a void to escape from the injected insulating resin in the gap.

Abstract: A method for fabricating an inductor which includes a core, a shield and a length of epoxy tape is provided which includes the steps of winding the wire into a coil onto the core, wrapping the epoxy tape around a perimeter of the core, installing the core including the coil and epoxy tape into the shield, and heating the inductor causing the epoxy tape to bond to the shield. An inductor incorporating the method is also described.

Abstract: An ignition coil for an internal combustion engine is mainly made up of a transformer part and a control circuit part and a connecting part, and the transformer part is made up of a iron core which forms an open magnetic path, magnets, a secondary spool, a secondary coil, a primary spool and a primary coil. By respectively setting the cross-sectional area SC of the iron core between 39 to 54 mm2, the ratio of the cross-sectional area SM of the magnets with the cross-sectional area SC of the iron core in the 0.7 to 1.4 range, the ratio of the axial direction length LC of the iron core with the winding width L of the primary and secondary coils in the 0.9 to 1.2 range, and the winding width L in the 50 to 90 mm range, the primary energy produced in the primary coil can be increased without increasing the external diameter A of the case.

Abstract: A method for forming a resin molding on a coil of a transformer is disclosed. The method comprises the steps of inserting a coil into an auxiliary spacing apparatus, inserting the auxiliary spacing apparatus into a mold, and forming a resin molding for the auxiliary spacing apparatus with the coil by putting a resin into the mold. According to the methods, the coil is not damaged and a resin molding is formed with a uniform thickness.

Abstract: An ignition coil (10) has a core (16) composed of a plurality of laminations (46) and about which is directly disposed an insulating layer (22). A primary winding (24) is wound directly on the insulating layer (22), thereby eliminating the need for a primary winding spool and recovering the space conventionally occupied by such a primary winding spool for use in allocating greater space to the core (16) and/or windings.

Abstract: In an individual ignition type ignition coil for use in an internal combustion engine in which a center core 1, a secondary coil 3 wound on a secondary bobbin 2 and a secondary coil 5 wound on a primary bobbin 4 are installed concentrically from an inner side of a coil case 6 in order. Among these interior constituting members, insulation resins 17 and 8 are filled up. Each of the primary bobbin 4 and the secondary bobbin 2 is made of a synthetic resin and at least a skin layer on an inner surface of the primary bobbin 4 and a skin layer on an outer surface of the secondary bobbin 2 are removed, and to the surfaces of the bobbins, the insulation resin 8 is adhered closely. By heightening a close adhesion strength (a bonding strength) of a bobbin and an insulation resin in an individual ignition type ignition coil, an anti-heat shock is improved and an insulation performance of the coil is attained.

Abstract: Leakage fluxes from windings and leads of a stationary induction apparatus are confined within a tank. The stationary induction apparatus includes an electric functional units each including a winding and a core, a tank containing the electric functional units, high-voltage leads leading out from the windings, and low-voltage leads leading out from the windings. Magnetic shields are placed on the inner surface of a wall of the tank through which the high-voltage leads are drawn out of the tank, and a composite shield formed by combining nonmagnetic shields and magnetic shields is placed on the inner surface of a wall of the tank facing the low-voltage leads and is electrically short-circuited.

Abstract: An ignition coil for a motor vehicle, comprising: a magnetic core (12) having an elongated shape, a primary spool (20) supporting a low-voltage winding (22), and a secondary spool (16) supporting a high-voltage winding (18). The two spools are set coaxially with respect to the magnetic core. The coil includes a tubular shaped outer casing (24) carrying, at a first end, a low-voltage connector (28) and, at a second end, a high-voltage connector (30) which is designed to connect with a spark plug. A diode (42) is set at one end of the high-voltage spool (16) and has both a first rheophore (44), which is electrically connected to one end of the high-voltage winding (18), and a second rheophore (46), which is electrically connected to the high-voltage connector (30).

Abstract: An ignition coil assembly having an inner core element formed from an interlocked stack of elongate laminae plates. Each of the laminae plates has a substantially common length and a substantially uniform width along the length thereof, with the length of each laminae plates being greater than a width thereof. A first one of the plurality of laminae plates being the widest laminae plate in the stack is located substantially in a center thereof with others of the laminae plates located above and below the first laminae plate and having progressively decreasing widths. Each of the laminae plates in the stack being interlocked to an adjacent laminae plate and the stack having substantially planar end surfaces that are provided with guide elements that are aligned substantially perpendicular to the widths of the plurality of laminae plates. The guide elements include notches and/or projections that can have various geometric shapes.

Abstract: A surface mounting type coil includes: a coil hiving windings which are wound around a magnetic core having a hole; a cylindrical magnetic body which is provided around the coil; and a plurality of metal plate terminals which leads of the windings are connected to; the metal plate terminals extending along an outer face of the cylindrical magnetic body from a bottom face to a top face thereof, and being secured to the cylindrical magnetic body in such a manner that tips of the metal plate terminals are within the thickness of the cylindrical magnetic body.

Abstract: An ignition coil (1) having a case (2), a core (22) installed in the case, a primary spool (25) disposed substantially coaxially around an outer circumference of the core within the case, a primary coil (26) comprising a wire wound around the primary spool, a secondary spool (23) disposed substantially coaxially around the outer circumference of the core within the case, a secondary coil (24) comprising a wire wound around the secondary spool and a resin insulating material (5) filled within the case, the ignition coil being characterized in that the spool of the primary and the secondary spools which is disposed between the secondary coil and the core and/or which is disposed between the secondary coil and the primary coil comprises a base resin having an adhesive strength to the resin insulating material which is less than that provided by polybutylene terephthalate and an insulation breakdown voltage which exceeds that provided by polyphenylene sulfide.

Abstract: An inductor assembly includes a coil or coils of insulated conductor material defining an inside volume, an inner core of magnetic core material located within the inside volume, and an outer core of magnetic core material including structure overlying the coil and inner core and having opposite inner walls facing polar ends of the coil and core, such that at least two magnetic gaps exist between ends of the inner core and the opposite inner walls of the outer core. A method for making the assembly is also disclosed.

Abstract: A center core 1, a secondary coil 3 wound at a secondary bobbin 2 and a primary coil 5 wound at a primary bobbin 4 are placed concentrically inside a coil case 6 in sequence from the inside of the coil case. One end of the secondary coil 3 is connected to the primary coil side and becomes a low-voltage side, and the other side becomes a high-voltage side due to an induced voltage and used with connection to the individual ignition plugs of the internal combustion engine. The radial thickness of the bobbin at the low-voltage side 3a and the high-voltage side 3c of the secondary coil, each located at the both ends of the secondary coil, is made larger than the radial thickness of the bobbin at the center part 3b of the secondary coil. The radial thickness of an insulating layer 8 between the secondary coil 3 and the primary coil 5 at the low-voltage side 3a of the secondary coil is smaller and the radial thickness of the insulating layer at the high-voltage side 3b of the secondary coil is larger.

Abstract: A multilayer ferrite component is produced with powder for magnetic ferrite, characterized by having the composition of Fe2O3: 40 to 51 mol %, CuO: 7 to 30 mol %, ZnO: 0.5 to 35 mol % and MgO: 5 to 35 mol %, in which a peak of particle size distribution positions in range of 0.3 to 1.2 &mgr;m. This MgCuZn ferrite uses such powders of less deterioration in a permeability &mgr; and a peak position of particle size distribution in range of 0.3 to 1.2 &mgr;m, thereby enabling a co-firing together with Ag or Ag alloys. It is provided a magnetic ferrite of less deterioration in a magnetic characteristic, in particular a permeability &mgr; against stress and enabling to be sintered at low temperature sintering, that is, below the melting points of Ag or Ag alloys used as electrode materials.

Abstract: An internal heating method for drying, gelling and final curing of epoxy resin insulation systems used for encapsulating dry type cast distribution transformer coils is disclosed. The internal method uses a Direct-Current (DC) power source to control and supply DC current to resistively heat the transformer coil encapsulated with a liquid resin under vacuum in a mold. DC current is applied to a given coil based on its conductor cross-sectional area and its epoxy resin quantity to achieve a specified temperature for drying, gelling and final curing. The temperature, controlled by DC resistive heating is maintained for a given period for each step.

Abstract: An ignition system for igniting fuel in a gas turbine or diesel engine is described. The system includes a magnetic core-coil assembly having a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy, a primary winding and a secondary winding. Also included are driver electronics for applying voltage to a spark plug to cause a spark to ignite the fuel. The core-coil assembly and driver electronics are capable of operating with a rapid charge and discharge cycle to produce a high spark pulse rate. In another aspect, a magnetic core-coil assembly is disclosed which has a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy having a permeability ranging from about 250 to 500, a primary winding for low voltage excitation and a secondary winding for high voltage output.

Abstract: There are provided a coil-embedded dust core that provides high inductance and a method for manufacturing the same. The coil-embedded dust core includes a coil 1 formed by winding a flat conductor 2 and a green body 10 comprising of ferromagnetic metal powder coated with an insulating material. The coil 1 is composed of a winding section 3 in which the flat conductor 2 having front and back surfaces opposed to each other with a predetermined distance is wound and lead-out end sections 4a and 4b that are extended from the winding section 3. Either one of the front and back surfaces of the lead-out end section 4a and either one of the front and back surfaces of the lead-out end section 4b are formed so as to be on the same plane. By using the coil 1 in which the both end sections (lead-out end sections 4a and 4b) are formed on the same plane, the coil-embedded dust core can be made smaller in size, and high inductance can be provided.

Abstract: An ignition coil includes a center core, a primary coil a secondary coil, a coil housing, a tower housing disposed under the coil housing, and a high tension terminal disposed inside the tower housing. The high tension terminal has an upper flange disposed at a first circumferential gap opposite the inside surface of the tower housing and a middle barrel disposed at a second circumnferential gap opposite the inside surface of the coil housing. The first circumferential gap is made smaller than the second circumferential gap. The tower housing or the upper flange has a void-purging passage for purging air from the insulation resinous members when filled in the coil housing.

Abstract: A device for electrically interconnecting and packaging electronic components. A non-conducting base member having a component recess and a set of specially shaped lead channels formed therein is provided. At least one electronic component is disposed within the recess, and the conductors of the component are routed through the lead channels. A set of insertable lead terminals, adapted to cooperate with the specially shaped lead channels, are received and captured within the lead channels, thereby forming an electrical connection between the lead terminals and the conductors of the electronic component(s). A method of fabricating the device is also disclosed.

Abstract: A transformer apparatus comprises a core member including a base portion, a center core portion and at least three side core portions fixed on peripheral parts to stand thereon. The transformer apparatus further comprises a primary coil fitted around the center core portion; a first plate coil member in a frame-like shape enclosing the outside of the side core portions; a second plate core member in a frame-like shape enclosing the outside of the side core portions and being combined with the first plate coil member in a laminated state having an insulating layer therebetween. The transformer apparatus further comprises connecting coil pieces cantilevered by each side portion of the second plate coil member correspondingly to the side core portions. Each free end of the connecting coil pieces extends to enclose the outer periphery portion of a corresponding side core portion to be connected with the first plate coil member.

Abstract: The invention provides a moulded coil wherein a sheathing surrounding a coil has no joints. A coil 13, while being supported by movable pins 37, is maintained in a suspended state with a cavity 35 formed between an upper mould 31 and a lower mould 32. From this state, molten plastic R is injected into the cavity 35. When the amount of molten plastic R that has been injected reaches 70-80% of a specified amount, the movable pins 37 move outwards until they have retreated to a position whereby they form a unified face with opposing faces of the cavity 35. At this juncture, the coil 13 remains in its original position even though it is no longer supported by the movable pins 35. After the movable pins 37 have retreated, the molten plastic R continues to be injected, and fills the area formerly occupied by the movable pins 37. A moulded coil 10 is obtained in which the coil 13 is entirely surrounded by the sheathing 14 which has no joints.

Abstract: The invention relates to an inductive component, having a coil (3) disposed in an injection molded housing (2) and having conductor rails (4), also mounted in the housing (2), to each of which the ends of the coil wires are contacted in the form of connection wires (7). Each of the connection wires (7) between the coil (3) and the respective conductor rail (4) forms one composite structure, comprising windings and twists, with a film (8) located between and/or outside them. The injection molding compound of the housing (2) can be applied directly to these composite structures. Preferably, the composite structure comprises at least two windings, which are twisted together and are disposed in the direction of the course of the connection wires (7).

Abstract: The transformer assembly comprises a housing with a top portion having a cavity within which a transformer is sealed using a waterproof sealant and a body portion which is generally hollow for supporting the top portion and for providing a pathway for feeding wires into the housing for connection to the transformer. The transformer is mounted on a plate retained within the top portion of the housing. The plate, which has a plurality of holes therethrough, supports at least one circuit breaker and at least one liquid-tight fitting through which wires are passed to connect to the transformer. The at least one circuit breaker is positioned over an opening through the plate allowing access to its reset switch. The at least one circuit breaker is sealed within flexible silicone boots so that both the top and bottom of the circuit breaker are sealed against moisture while still allowing the reset switch to be pressed.

Abstract: A low profile surface mountable toroid inductor. The apparatus features a one step molded housing which includes a cover and opposing mounting legs. The housing is molded in a liquid crystal polymer. The length of wire that provides the turns on the toroid also serves as the mounting pads as each end of the wire that is left exposed during the housing molding process is then wrapped around its corresponding leg to provide a mounting pad. The apparatus is able to achieve a thickness that is less or equal to 1.5 mm by eliminating the thickness of a prefabricated cover. Further, a flat surface can be molding into the housing so that the apparatus can be positioned with “pick and place” techniques. Also, the apparatus can be configured so that it can be mounted upside down as well.

Abstract: A transformer includes first and second transformer windings formed on an iron core. The core and windings are disposed in an enclosure. There are first and second electrical pins in electrical connection with the first transformer winding. A second inner enclosure made of fire retardant material encases a portion of the electrical pins and the first transformer winding in connection with the electrical pins.

Abstract: A transformer includes first and secondary transformer windings (7, 8) formed on an iron core (6). The core (6) and windings (7, 8) are disposed in an enclosure (1a, 1b). There are first and second electrical pins (2, 3) in electrical connection with the primary transformer winding (7). A second inner enclosure (16) made of fire retardant material encases a portion of the electrical pins (2, 3) and the primary transformer winding (7) in connection with the electrical pins (2, 3).

Abstract: An ignition coil has a case and a central core placed in the case. A secondary spool is wound with a secondary coil and placed outside the central core in the case. A cylindrical primary spool is wound with a primary coil and placed outside the secondary spool in the case. A resin insulator is filled in the case to maintain the insulation between each member. Air layer is partitioned in at least one of a gap between the central core and the secondary spool and a gap between the primary spool and the case.

Abstract: A method for inhibiting or eliminating case erosion in a pencil ignition coil having an internal primary winding and an external secondary winding and shield. Three alternative means for resisting damage due to the partial discharge phenomenon arising from a high electric field in such coil configurations are provided: (i) applying an ozone resistant coating on the case; (ii) applying a coating on the case for eliminating partial discharge under the shield; and (iii) applying a polyimide tape covering to the case for resisting partial discharge under the shield.

Abstract: An ignition coil includes a housing which contains a central core portion, an inner spool having a first winding, and an outer spool having a second winding. The inner spool extends outward of the central core portion. The outer spool extends outward of the inner spool. A locating member includes a locating rib adjacent to an upper portion of the central core portion. The locating rib is in a gap between the inner spool and the central core portion, and locates the inner spool and the central core portion relative to each other. Insulating resin injected into the housing provides insulation among parts in the housing. At least one of the inner spool and the locating member has a void-escape passage which connects the gap and an outside of the inner spool with each other, and which allows a void to escape from the injected insulating resin in the gap.

Abstract: A description is given of a method of manufacturing an inductive element for SMD applications. This method comprises the following steps: a) providing a number of predominantly parallel electroconductive wires in the mould of an injection-molding device, b) circumferentially providing a part of the wires with a synthetic resin by injection molding, in such a manner that the ends of the wires remain free, c) providing an envelope of a soft-magnetic material around the circumferentially injection molded part of the wires, and d) reshaping the ends of the wires. In accordance with the invention, the method is characterized in that the parts of the wires to be circumferentially injection molded are fixed inside the mold during the injection molding process. It has been found that inductive elements of the type manufactured in accordance with the inventive method generate, in operation, optimally homogeneous magnetic fields. Also the risk of electric short-circuits proves to be small.

Abstract: An ignition unit for at least two sparkplugs of an internal combustion engine, the unit being in the form of a box having therein a reception cavity receiving an electronic printed circuit, a plurality of mutually separate housings extending side by side transversely relative to the reception cavity, a separating partition disposed between the reception cavity and the housings which defines a through opening between each of the housings and the reception cavity, and a plurality of ignition coils, each mounted in a corresponding one of the housings. Each ignition coil is fitted with a primary connector including 1) a fixing member for fixing the ignition coil to the box to enable the ignition coil to be mounted in a corresponding one of the housings, and 2) connection terminals between the ignition coil and the printed circuit.

Abstract: In a magnetic core for a non-contact displacement sensor comprising a detecting coil, a coil receiving member and a terminal, the coil receiving member is comprised of a green compact made of insulated soft magnetic powder and an insulating layer covering the green compact, and an organic resin is filled in a closed space of the coil receiving member.

Abstract: An ignition system for igniting fuel in a gas turbine or diesel engine is described. The system includes a magnetic core-coil assembly having a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy, a primary winding and a secondary winding. Also included are driver electronics for applying voltage to a spark plug to cause a spark to ignite the fuel. The core-coil assembly and driver electronics are capable of operating with a rapid charge and discharge cycle to produce a high spark pulse rate. In another aspect, a magnetic core-coil assembly is disclosed which has a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy having a permeability ranging from about 250 to 500, a primary winding for low voltage excitation and a secondary winding for high voltage output.

Abstract: An ignition system for igniting fuel in a gas turbine or diesel engine is described. The system includes a magnetic core-coil assembly having a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy, a primary winding and a secondary winding. Also included are driver electronics for applying voltage to a spark plug to cause a spark to ignite the fuel. The core-coil assembly and driver electronics are capable of operating with a rapid charge and discharge cycle to produce a high spark pulse rate. In another aspect, a magnetic core-coil assembly is disclosed which has a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy having a permeability ranging from about 250 to 500, a primary winding for low voltage excitation and a secondary winding for high voltage output.

Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.

Abstract: An ignition apparatus includes a high voltage (HV) terminal formed of stamped sheet metal configured to be disposed in a secondary winding spool, and to which a high voltage end of the secondary winding is attached and soldered. The ignition apparatus further includes an electrically conductive cup configured to surround the high voltage terminal when the secondary winding spool is inserted in the case. The high voltage terminal has one end that comes into engagement with an inner annular surface of the cup. The cup includes an annular sidewall that extends axially up to a winding flange where a HV end of the secondary winding exits a winding bay thereby surrunding the exiting HV secondary winding wire. The cup provides for a reduced electric field concentration.

Abstract: An ignition apparatus includes a high voltage (HV) terminal formed of stamped sheet metal attached to a secondary winding spool, and to which a high voltage end of the secondary winding is soldered. The ignition apparatus further includes an electrically conductive cup formed of stamped aluminum or brass that is disposed in a case and is configured to receive the high voltage terminal when the secondary winding spool is inserted in the case. The high voltage terminal has a spring tab or the like that is biased radially outwardly into engagement with an inner annular surface of the cup. A bottom outer surface of the cup is arranged to be engaged by a high voltage spring or the like for making the connection to the spark plug. The cup is substantially free of burrs, sharp edges, and the like, and therefore reduces localized occurrences of high electric field concentrations, which could otherwise lead to insulating material, and thus ignition coil, failure.