Abstract: To suppress positional deviations of magnetic members of a stacked core and prevent damage thereto when the stacked core is attached to a case. A method for producing a stacked core including a stack of foil-shaped magnetic members for fixation to a case with a fastening bolt includes preparing magnetic members each having formed therein a positioning opening, and a tubular collar adapted to be fastened to the case with the fastening bolt inserted therethrough, the tubular collar having a first receiving face for a head of the fastening bolt and a second receiving face for the case, stacking the magnetic members while arranging the collar within the opening, impregnating gaps between the stacked magnetic members as well as gaps between the openings of the magnetic members and the outer peripheral face of the collar with resin, and integrating the magnetic members with the collar by curing the resin.

Abstract: An electromagnetic coil assembly (34) includes a coil sub-assembly (34C) and a tower sub-assembly (34T). The coil sub-assembly includes a coil housing (70) having a first opening (70-4A; 70-4B), a coil winding (72), a tower mount (74) having a base (74-1) adjoining the first opening and extending along a first surface (70I) of the coil housing, and a first mount bushing (76A; 76B) secured to the base. The first mount bushing is electrically connected to the coil winding. The tower sub-assembly includes a tower housing (90) positioned at a second surface of the coil housing located opposite the first surface, a first tower bushing (96A; 96B) electrically connected to the first mount bushing, and a first fastener (98A; 98B) securing the first tower bushing to the first mount bushing. The first fastener is engageable to the first mount bushing from proximate the second surface of the coil housing.

Abstract: A sensor module or system for monitoring a headspace of a transformer can include a sealed chamber configured for coupling and accessing gasses from the headspace of the transformer, a plurality of sensors placed within the sealed chamber which can include a hydrogen sensor and at least a second sensor such as a total combustible gas sensor, a moisture sensor, a pressure sensor, or a temperature sensor. The module or system can include one or more processors coupled to the plurality of sensors where the processors are configured to generate an alarm signal when a combination of the hydrogen sensor and at least the second sensor exceed a predetermined threshold.

Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA is used to produce useful electromagnetic fields for health applications and/or medical applications.

Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.

Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA may be used to produce useful electromagnetic fields for various applications.

Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA is used to produce useful electromagnetic fields for health applications and/or medical applications.

Abstract: A transformer includes a base, a magnetic core unit and a winding assembly. The base includes a base body and a pin disposed on the base body. The magnetic core unit is disposed in the base body, and the winding assembly is disposed in the magnetic core unit. A winding of the winding assembly is connected to the pin.

Abstract: A reactor-securing structure includes, one end of a first-side stay and one end of a second-side stay that are connected to portions of a reactor which are separated from each other at the two sides of a coil axial direction. The other end of the first-side stay and the other end of the second-side stay are fastened in states overlapping the inverter case. A first-side overlapping portion is formed by having the other end of the first-side stay overlap the inverter case, and a second-side overlapping portion is formed by having the other end of the second-side stay overlap the inverter case. A portion of the first-side overlapping portion and a portion of the second-side overlapping portion, when seen from a plan view, are provided in the same range relating to the length direction of the I-shaped section forming the reactor.

Abstract: An underfloor transformer includes a layered transformer core and at least one electrical winding through which the transformer core extends along a limb axis. In each of two axial end regions of the transformer core, a securing device, which interacts with the transformer core mechanically, is provided. The securing devices are configured for such tensile force stressing. The underfloor transformer can be carried suspended therefrom.

Abstract: [PROBLEM] By simplifying a core securing structure of a reactor, miniaturization, lightweight, and low costs of the reactor are achieved. [SOLVING MEANS] The core securing member to secure a core 109 in a case 101 in the reactor wherein the core 109 and the coil 105 are housed in the case 101 is made up of a first spring portion S1 which gives momentum to a side face of the core 109 in a horizontal direction and a second spring portion S2 which gives momentum to an upper face of the core 109 in a vertical direction. Moreover, a stopper portion to restrict popping of the core from the case and the second spring portion are integrally formed with a notch being interposed between the stopper and the second spring portion so that the stopper portion covers part of an upper face of the core.

Abstract: A reactor apparatus for a railway vehicle includes a coil assembly, a side cover, through bolts inserted into the coil assembly, cover supporting members, a pair of frames, and ribs that reinforce the pair of frames. A support/fixation section of each frame is fixed to an under surface of a vehicle pedestal. The pair of the frames are disposed on both sides of the coil assembly, and support the through bolts and the cover supporting member. For each rib, leg members that extend from corresponding reinforcing body are penetrated into and welded to the corresponding frame. For each cover supporting member, a leg member that extends from corresponding cover supporting body is penetrated into and welded to the corresponding frame.

Abstract: An inductor has a case having an opening, a core accommodated in the case, a coil wound on a part of the core and a fixing member fixed to the case. The fixing member fixes the core by contacting a top surface of the core facing the opening and elastically biasing the core toward a bottom surface of the case. The fixing member further includes a first plate portion and a first contacting portion. The first plate portion is disposed between the top surface of the core and the opening of the case and extending in parallel with the top surface of the core. The first contacting portion extends from a fore-end portion of the first plate portion so as to be U-shaped and having a distal end portion elastically push-contacting the top surface of the core.

Abstract: An integrated semiconducting device comprises a semiconducting substrate, a plurality of grounding strips disposed above the substrate in a lower metal level of the semiconducting device, an inductor positioned in an upper metal level of the semiconducting device, and a plurality of conducting vias connected to and extending away from the grounding strips towards the inductor. The inductor, conducting via, ground strips structure forms a Faraday cage that acts as a shield against electromagnetic radiation. The number and placement of the conductive vias are adjustable and can be optimized based on the relative importance of maximizing the quality factor Q of the inductor or minimizing the capacitance between the inductor and ground.

Abstract: A step-up coil of a high-voltage transformer for powering a cathode-ray tube comprises windings housed in chambers of a coil former. These windings are made in pairs. The inner end of the first winding of the pair is connected to an electrode of a first diode, the inner end of the second winding of the pair is connected to the electrode of like nature of the second diode, or alternatively, the outer end of the first winding of the pair is connected to an electrode of the first diode, the outer end of the second winding of the pair being connected to the electrode of like nature of the second diode. The inter-winding capacitances of the windings of the pair are thus non-activated, the corollary of this being a decrease in the value of stray oscillations of the output voltages.

Abstract: A ballast holder which can be fabricated from a single piece of bent sheet metal material, includes a gusseted riser structure, a base portion extending rearwardly from the foot of the riser structure, and a top flange portion extending in a forwardly direction from the top end of the riser structure for securing one of the mounting flanges of a ballast. The height of the rigid riser structure is chosen to be at least as great as the maximum height of a standard ballast to be held thereby. The ballast holder is used to install a ballast in an inverted position within a lighting fixture housing and can accommodate different sized ballasts. The ballast holder also reduces the amount of structure between the ballast and the overlying reflector element of the lighting fixture and thereby reduces the tendency of the ballast holding structure to bow or distort the lighting fixture's reflector where space is limited.

Abstract: Fastening mechanism for a transformer module and a signal generator for mounting at a signal tower.A bottom pan is provided having a multi-use holder, a receptacle for a transformer module, and a holding structure with a cable opening for a signal generator. The pan is mated with a cover forming a terminal space, a terminal block being arranged in this terminal space. The transformer module has catch hooks which are secured to corresponding catch noses in the receptacle. The transformer module comprises a transformer, a rectifier, and a lead. The applied multi-use holder comprises a U-shaped cable channel region communicating with a cable lead-through opening in the side wall of the bottom pan. A cable wind-up structure is provided in the terminal space. The cover is held to the pan by at least one catch nose and one catch tongue that are applied to the bottom pan and that engage into corresponding recesses in the cover.

Abstract: The current converter or transformer component of a high voltage measurement transformer comprises a primary lead or conductor which is surrounded by secondary windings or optical conducting elements. The primary and secondary components of the current converter or transformer component are housed in a casing having an integrally formed entry duct for the secondary leads. The secondary components of the current converter or transformer component are surrounded by plastic or synthetic insulation material. This insulation material or insulation also surrounds a channel for the secondary leads extending completely through the entry duct. The primary lead or conductor is provided with connecting flanges at both ends for mechanically or electrically connecting the high voltage measurement transformer to a high voltage or high power circuit breaker or similar device.

Abstract: To install a high voltage device, particularly a high voltage breaker having two interrupting chambers and a high voltage insulator in a simple earthquake resistant manner, an end flange of the high voltage insulator on the ground potential side is rotatably suspended from the support beam of a steel frame. A vibration damper is preferably provided between the high voltage breaker and its suspension device. The vibration damper is attached to a ball received in a socket which is mounted on the support beam. The two interrupting chambers which are connected to one another in a V-shape, are connected to high voltage lines. This inverted suspension is also suitable for current and voltage transformers and overvoltage arresters.

Abstract: A device for chocking an inverted type current transformer when transported on its side.It comprises at least one jack (12) within the metal enclosure (1) but operable from outside the latter and disposed, during transportation of the transformer on its side, between the transport platform (36) and the magnetic core (8) of the current transformer to eliminate any cantilever loading.

Abstract: A vibration resistant mounting bracket (10) that secures a power transformer (20,30) within the housing of an aircraft ignition system. The bracket (10) has a single source (11) that extends through the winding (30) and partially around the core (20) of the transformer and is characterized by a pair of downwardly facing surface portions (44, 45) and a pair of upwardly facing surface portions (52,53) which are located in parallel planes with each pair of surfaces being axially offset from each other.

Abstract: A plurality of hooks, which are of one-piece construction with a casing substantially enclosing a transformer or choke, are engaged by a suspension means which allows the casing, exclusive of the hooks, to be immersed in an impregnating agent. After impregnation, the casing and enclosed choke or transformer are removed from the impregnant and air dried. The hooks and suspension means are not immersed in the impregnating agent.

Abstract: A high-voltage installation comprises a support structure including a supporting member from which at least one electrical high-voltage apparatus, for example a transformer or inductor, is suspended. The apparatus is suspended from the supporting member by at least one electrically-insulating suspension member, for example an insulator chain, which includes resilient means allowing relative movement between the apparatus and the supporting member.

Abstract: A toroidal coil (21) having two windings (23, 24) is packaged in a housing (22) which includes a first portion (39) having a cylindrical cavity (41) that extends between an open end and a closed end (43) of the first portion for receiving the coil. The housing also includes two arms (51-51) which extend from the first portion between planes which are substantially coincident with the open end and the closed end of the first portion. Each arm is connected to the first portion and has a free end with internally formed nests (72-72) for receiving contact elements (30-30). Each contact element has aligned, spaced slots (94, 101) at an inner end for terminating a lead of the winding and aligned, spaced slots (107, 111) at an outer end adjacent the free end of the arm in which it is mounted for terminating a conductor (31) of a cable to be loaded inductively. The nests are formed so that the inner and outer slots of the contact element are aligned along an axis transverse of an axis of the cylindrical cavity.

Abstract: A method and apparatus for mounting and aligning electrical components in a generally cylindrical protective housing including a plurality of generally annular mounting trays having upstanding mounting pins concentrically disposed thereon for receiving annular electrical components with means on the trays for orienting the components on vertically stacked trays in staggered circumferential relation and preferably with radial slits in the trays to permit radial insertion of electrical leads from the outer periphery of the trays to the centrally disposed apertures therein.

Abstract: A holder for providing coils for compensation of local connections of cores of a cable within a cable sleeve characterized by a holding member having a ring-shaped cross section with a splicing space disposed in the interior and with a portion of the holding member being movable to enable access to the splicing space from the exterior of the member, a detachable connecting device to enable forming a connection to a cable inserted into the splicing space from an end of the holding member and coil cups disposed on the outer surface of the holding member to surround the splicing space.

Abstract: Two stacks of individual loading coils are mounted on the arms of a U-shaped bracket which is supported on a divider wall of a contoured plastic case having a pair of compartments for receiving the coil stacks. The crossarm of the bracket is shaped to fit within a correspondingly shaped notch formed in the divider wall to centrally position the stacks of coils within the compartments. In another embodiment spacer ribs project from the inner walls of the housing to provide means for accurately locating the stacks within the compartments. Encapsulating medium is introduced into the case to protect the coils and provide electrical isolation between the coil stacks.

Abstract: A loading coil assembly comprises a casing with an end disc at the inlet end which carries a central column extending axially in the casing. At the end of the column remote from the inlet end a support member is mounted, and a plurality of magazines, each holding a number of coils, hangs from the support member. Additional support members in the form of rings can be mounted on the column, with further magazines hanging from the rings, in one or more circles. The size of casing varies with the number of support members and rings of magazines. The casing is closed by a further end disc and filled with an expanded plastic material. A plastic material outer casing is applied over the casing.

Abstract: A transformer mounting assembly is disclosed for mounting a plurality of current transformers on a wire. A pair of parallel mounting plates are positioned normal to one another with one of the mounting plates having first and second current transformers mounted on the same side of the mounting plate at the opposite end portions and the engaging mid portions of the mounting plates having a third current transformer mounted thereat with the third current transformer being at the other side of the mounting plate from that of the first and second current transformers. The opposite end portions of the other mounting plate have clamps mounted thereon with the clamps being contoured to releasably clamp the assembly to a neutral wire with the other mounting plate extending along the wire.

Abstract: There is disclosed a light fixture having a ballast therein comprising a substantially enclosed steel case which is mounted on a wall of the steel housing of the fixture and substantially filled with a potting compound in which a magnetic core and coil device is embedded.

Abstract: A load coil assembly housing for use with multiconductor cable containing a plurality of associated pairs of electrical conductors has connector terminals located along the periphery of the region in which load coils are located. That makes the otherwise conventional housing suitable for use with mass application tooling. Cable wires and load coil or component leads may be respectively attached by solderless and solder techniques to one terminal.

Abstract: A mounting arrangement for mounting a ballast transformer to a structural support member. As employed in accordance with the invention, the ballast transformer has an opening through the core portion thereof. A pair of L-shaped mounting members are mounted to the ballast transformer by means of a pair of elongated, compressible mounting pins, commonly known as "rollpins," which are driven through openings in the vertical portions of the L-shaped mounting members into opposite entrances of the opening in the ballast transformer. The mounting members are then secured to the structural support member by means of threaded fasteners which are inserted through openings in the structural support member and threaded into openings in the horizontal portions of the L-shaped mounting members. The threaded fasteners are selected to have lengths so that the threaded portions thereof will extend past the exposed ends of the mounting pins and be immediately adjacent thereto.