Abstract: A current transformer for very high tension units. The transformer has an insulating through bushing and an annular metal chamber both filled with compressed gas, a primary circuit with an input conductor which enters the chamber via the through bushing and an output conductor which leaves the chamber via the through bushing coaxially to the first conductor, and at least two magnetic circuits each having a secondary winding, wherein the current transformer has an electric side connection at the lower portion (21) of the metal chamber (11) and wherein the magnetic circuits (14, 15) are disposed on either side of said side connection.

Abstract: A mounting device is disclosed which provides mechanical support and electrical insulation for a current transformer used in monitoring radio frequency signals in the neutral lead of a dynamoelectric machine. By encapsulating the current transformer in a rigid insulative apparatus with a central conductor passing therethrough, the transformer can be placed proximate the neutral bus of the dynamoelectric machine to avoid attenuation of the radio frequency signals.

Abstract: Liquid-cooled transformer for large power ratings, including a tank having a bottom with cutouts formed therein, large-area base plates resting on the bottom of the tank, an active part having ends and a pressure device being fastened to the base plates, at least one of the base plates being disposed under one of the ends of the active part, the at least one base plate having outside corners being disposed above the cutouts formed in the tank bottom, stopping blocks positively locking the outside corners in position without play, and inserts supporting the stopping blocks and oil tightly closing off the cutouts.

Abstract: A molded plastic housing mounts a coil adjacent to a conductor to act as a current responsive pickup means. The mounting arrangement for the pickup coil uses no magnetic circuit and is adapted to self-center the structure on conductors of varying sizes without the need to sever and reconnect the current carrying conductor. The pickup means provide a substantially linear output voltage from the pickup coil versus the current being carried in the monitored conductor.

Abstract: Liquid-cooled transformer for large power ratings, including a tank having a bottom, large-area base plates resting on the tank bottom, an active part and a pressure device fastened to the base plates, a plurality of synthetic resin-filled cups disposed in the tank bottom, a post supported by and projecting downward from the base plates being immersed in each of the cups for horizontally locking the base plates relative to the tank bottom.

Abstract: A hermetic enclosure assembly having a metal header cover with interior and exterior portions and defining a plurality of apertures. A header body of rigid plastic material is adhered to and fills a substantial part of the interior portion of the header cover. A plurality of conductive leads protrude through the apertures, and bushings surround the conductive leads at the interior and exterior portions of the header cover where the pins protrude. A metal header casing is adhered to the metal header cover such that the interior portion of the header cover is completely enclosed. The assembly provides a minimum of plastic located exteriorly of the assembly and a maximum located interiorly.

Abstract: A high voltage transformer is formed by a unitary core mounting a primary winding being inserted in a cavity of a bobbin that mounts the secondary winding. The secondary winding is placed in alternate bays of a multibay structure to isolate the windings from one another to avoid high potential breakdown. The assembly is complete by the mounting of the core within the cavity of the bobbin, but can be supplemented by covering the entire unit with a protective housing that further aids in mounting the transformer to an insulating surface, such as a printed wiring board.

Abstract: A converter transformer for an AC-DC converter is assembled by connecting three transformer units at an installment site. In the respective transformer units, first, second and third iron core legs are received in oil tanks. On the first and second core legs are mounted series-connected first and second primary windings, respectively. On the second and third legs are mounted first and second secondary windings respectively. Coupling windings connected in parallel are mounted on the respective legs. The primary windings and the secondary windings are electromagnetically coupled.

Abstract: The invention relates to a current transformer for a high-tension installation, said transformer including a primary winding, a secondary winding and a magnetic circuit, said primary winding including a primary turn suspended coaxial inner and outer conductors in an insulation chamber which contains a dielectric fluid. The secondary winding (28) and the magnetic circuit (27) are disposed around the primary turn (6) on the outside of the chamber. Electrical continuity of the insulation chamber past an insulating seal (24) therein is provided by a jumper (29) which passes round the outside of the secondary winding and the magnetic circuit. The invention applies in particular to very high tension installations.

Abstract: A pulse transformer having primary and secondary windings on separate insulating bobbins which are carried on the arms of a pair of U-shaped ferrite cores which provide a continuous magnetic path for coupling relatively high energy pulses. The bobbin and core assembly is assembled in and held together by a close fitting molded plastic housing which carries four pins to which the primary and secondary windings are attached. The connecting pins extend from a side of the housing which is open to receive the bobbin/core assembly and are adapted for printed circuit board mounting in which the board covers the housing opening so that the transformer is completely protected.

Abstract: A coaxial inductive coupler having an inner magnetic core member and a surrounding outer magnetic core member each having respective windings. The inner magnetic core is operatively carried by an inner support assembly which is additionally connected to an outer protective shell. The outer core is disposed within a cylinder having at the end thereof a large guide member for facilitating insertion into the outer protective shell. A locking mechanism is provided to insure positive coupling and easy release.

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 transformer framing structure in which the distance between the opposing end faces of the primary and secondary coils is increased to improve the dielectric strength of the transformer, and also the primary and secondary coils are framed by separate frameworks to allow separate winding of the respective coils to thereby improve assembling workability. According to this invention, the number of the dies used for molding of the frame body, bobbin assembly and cover of the framing structure is lessened, and mounting of the terminals is simplified to allow easy terminal assemblage. Also, adaptability of the transformer to a printed substrate is improved.

Abstract: Improved end clamping members are used in transformers having a horizontal magnetic circuit which is preferably of rectangular cross-section.Each end clamping member is embodied by juxtaposed longitudinal beams--side beams (4) comprising magnetic laminations on edge over substantially their whole thickness, and intermediate beams (5) comprising magnetic laminations on edge over only some of their thickness, the end clamping member being embodied for the rest by a longitudinal flat iron member (15), and each group or set of magnetic laminations has at its center the longitudinally extending wedge-shaped member and on each side another longitudinally extending flat iron member of the same width.The invention is of use more particularly for high-power shell type transformers in a form-fit tank.

Abstract: A heavy duty converter including case and cover elements defining a case and cover assembly and a transformer subassembly with or without rectification within the case and cover assembly wherein flange and pin means are provided on the case and cover elements for coacting with the transformer subassembly to resiliently support the subassembly and to maintain the transformer subassembly in spaced relation to the walls of the case and cover assembly such that the hot spots of the transformer subassembly are so located as to allow efficient dissipation of the heat. Where plug-in terminals are provided for input to the power pack, the terminals are secured in place to the cover of the case and cover assembly. Various output rated transformer subassemblies may be used in the same case and cover assembly wherein the bobbin for each given size of transformer subassembly will include identical outer flanges for coaction with the flanges and pins on the case and cover assembly.

Abstract: Magnetic core structure for single-phase shell form transformers. The magnetic core structure includes an outer magnetic core formed of a plurality of spaced legs joined at their corresponding ends to common yokes. Inner magnetic cores are disposed between the legs of the outer magnetic core and spaced therefrom to form gaps completely therearound. Double-webbed beams are positioned underneath the magnetic core structure to support the structure from the transformer tank. Each web extends into the gap between a leg of the outer magnetic core and the adjacent leg of one of the inner magnetic cores.

Abstract: A mounting assembly for a ferrite core disposed within a solenoidal electric field lamp comprises first and second members disposed in chord-like fashion, each having an opening for receiving the core, and in one embodiment, a third member which encircles the core in a chord-like fashion and also encloses the first and second members so as to fixedly hold them to the core when ends of the first and second members are stressedly anchored to points distal from the core. In another embodiment the third member comprises a circular band to which said first and second members are attached, said band being readily affixable to a glass pedestal header assembly. The mounting means cooperate with the lamp assembly so as to reduce the level of electromagnetic interference produced, and can be fabricated rapidly and inexpensively.

Abstract: A plurality of individual toroidal loading or inductive coils mounted on a fiberglass dowel are positioned within a D-shaped case so that wiring spaces are provided between the peripheries of the coils and the junctures of the arcuate and straight sections of the case. Terminal strips are laid in the wiring spaces so that coil and stub cable wires may be secured to terminal posts projecting from the strips. The case is provided with openings to permit encapsulation of the coils. The D-shaped configuration of the case permits compact assembly of a number of cases within an outer casing.

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 coupling transformer for networks with superimposed audio frequency voltage, especially for ripple control systems, with primary and secondary windings rigidly coupled with each other and arranged about an iron core; the primary and secondary windings surround one another coaxially and are separated and insulated from one another by a cast resin insulation, whereby only one of the two windings is embedded in the cast resin insulation while the other, freely accessible winding coaxially surrounds the iron core constructed as rod-type core under formation of at least one cooling channel; an electric shield is additionally provided between the two windings.

Abstract: A plug-in adaptor such as a power pack, transformer or the like in which the inner ends of the plug-in blades, which are connected to the primary, are mounted in molded channels integral with a flange of a coil bobbin, which flange is parallel to the coil length and a cover which encloses the flange and surrounds the blade ends, thus assisting in retaining the ends upon the flange at their connection to the primary and which is clamped to the transformer laminations by fingers extending from the lamination frame; and the bobbin has another extended area providing mounts for eyelets to which secondary leads and other components may be attached.

Abstract: Electrical apparatus having certain portions thereof insulated with solid insulating structures. The solid insulating structures include a predetermined thickness of polyethylene terephthalate film which is surrounded on each of its major outer surfaces by a layer of paper having a fibrous web formed of wholly aromatic polyamide fibers.

Abstract: A thin wall, stainless steel transformer case of rectangular box configuration is comprised of edge welded steel plates with its sidewalls and end walls bearing vertical, U-shaped bonded channel members of copper for mechanical reinforcement of the case and for forming transformer heat dissipating fins. Stainless steel reinforcing channel members are similarly bonded to the outside of the case bottom wall and the cover. An epoxy fiberglass strap spanning interiorly between the sidewalls of the case at its upper end and bolted to opposed brackets press the transformer core against the bottom wall of the transformer case. A pair of deformable tubes sealably project through the cover for effecting vacuum evacuation of the interior with the cover sealed to the case and for feeding insulating dielectric liquid to the transformer case interior. The tubes are pinched off and sealed after filling.

Abstract: The invention is an arrangement of inductive voltage transformers for installation in a completely insulated high-voltage switching installation comprising a metal encapsulation and several high-voltage conductors. In accord with the invention each of the inductive voltage transformers includes an insulating body carrying a respective high-potential winding, and each further includes a bushing laterally joined to its respective insulating body. More particularly, in further accord with the invention the bushings are arranged so as to be continuations of the high voltage conductors of the switching installation when the transformers are disposed therein.

Abstract: A voltage transformer for use with high voltages. The transformer includes an insulating body in which is disposed a high-potential winding and a bushing laterally joined to the insulating body. In accord with the invention, the transformer is further provided with control electrodes in the form of conducting cylinders which are disposed concentrically with respect to the longitudinal axis of the bushing, thereby affording control of the bushing at both its ends. Moreover, in further accord with the invention, the high-potential winding is arranged adjacent to one side of the bushing so that its width extends over the control length thereof, and is comprised of subwindings which are metallically connected to the respective conducting cylinders such that a uniform voltage distribution results during the occurrence of surge voltages.

Abstract: In order to provide an electrically insulated and fluid-tight assembly for securing a current transformer to the inside of a dynamoelectric machine housing, a screw is inserted through an aperture in the machine's housing to secure the current transformer to a portion of the inner surface of the housing wherein a first insulating material is used to insulate the current transformer from the housing; a second insulator is used to insulate the screw from the housing; and an insulating cap is secured over the top of the screw. An O-ring provides a fluid-tight seal between the cap and the machine housing and a retaining ring is utilized to secure the cap over the screw's head within the machine housing. Secured to the lower part of the current transformer is a soft iron magnetic shield which is threaded to engage the screw and serves to support the current transformer.

Abstract: An improved bobbin and cover assembly for use in the manufacture of an electrical solenoid includes internal centering lugs for the hollow core bobbin which position the solenoid core. Ridges are integrally molded in the end flange of the bobbin and cover for cooperation with a solenoid field assembly to provide insulation of the field assembly from the leads and to provide for centering of the field assembly.

Abstract: An inductive voltage transformer for a high-voltage metal-clad switch-gear installation fully insulated by means of an insulating gas, which includes a pressure vessel flangedly connected to the metallic capsule of the switch-gear installation and has a high-voltage winding constructed as layer winding which is surrounded by the high-voltage electrode; the insulating gas disposed within the pressure vessel thereby forms the high-voltage insulation while the high voltage electrode is drawn axially over the winding end faces of at least a portion of the layer winding; the central portion of the high-voltage electrode surrounding the winding cross section of the layer winding as well as the edge portions thereof axially drawn beyond the layer winding are thereby so curved that the outer surfaces thereof form together with the adjacent cylindrical wall portions of the pressure vessel at least approximately a Rogowski-profile projected on a cylindrical area.

Abstract: The primary and secondary core sections of a split core transformer forming an inductive coupler are secured within separate sealed containments in intimate contact with a thin non-magnetic portion of the respective containments which permits inductive coupling and decoupling of the primary and secondary core sections in corrosive fluid environments such as water. The sealed containments isolate the core sections from contact with the corrosive environment thus permitting the use of efficient laminated iron in otherwise corrosive environments.

Abstract: A battery charger or voltage-reducing power pack is disclosed herein. A molded bobbin, which forms part of the power pack has a mounting head which has elongated slots that receive plug-in prongs with cooperating means between the mounting head and the prongs to prevent endwise movement of the prongs with respect to the slots after insertion therein. The mounting head and base plate have unique interlocking means that cover the exposed edges of the slots to retain the prongs in the slots and also has sturdy interlocking formations to rigidly hold the bobbin with respect to the base plate after assembly.

Abstract: A plug-in module for an electronic device includes a header having conductors therein which extend therefrom to form terminals, and a substrate connected to the header and supporting electronic components connected to the conductors. One component has a projecting part which extends through the header and forms a guide to align the module with a socket, to facilitate plug-in of the terminals of the header. The module may be a channel element to control the frequency of a radio device and may include a resonant element, such as a piezo-electric crystal, and a coil for tuning a resonant circuit. The form for the coil may be the projecting part for aligning the module, and also provide access to a core therein for tuning the circuit when the module is plugged into the chassis. The module may include a conducting housing which cooperates with the header to form an enclosed structure. A grounding pin may be provided to establish a ground connection for the circuit on the substrate and for the housing.

Abstract: A holding arrangement is disclosed which can be employed to hold a winding enclosure which contains a low-temperature-cooled electric winding on which alternating external forces act, and which is fastened within a vacuum tank by means of tie rods. In particular, the arrangement includes pre-tensioned tie rods which are arranged to unilaterally pull, via pressure posts, with force-transmitting contact the winding enclosure against the inside walls of the vacuum tank. More specifically, the tensioning force at room temperature is selected such that at low termperature a residual tension force remains which is always at least as large as the component of the external force opposing it. With such a design for the holding arrangement no readjustment devices are necessary and the heat conduction effected thereby is relatively minor.

Abstract: An oil-immersed type flyback transformer device wherein the container for the flyback transformer is made of plastic, whereby the ratio between the temperature coefficient of expansion of the capacity of the container with respect to the original capacity and the composite temperature coefficient of expansion of the volume of the whole assembly housed in the sealed container including the insulating oil is with respect to the original volume maintained within a predetermined range.

Abstract: A method and apparatus applicable with transformers having a magnetic circuit which is supported horizontally within a tank or shell made up of upper and lower parts, wherein a two-piece bar-like member assembly supported at its extremities on edges of the lower part of the tank, along with a conventional T-shaped beam support member is utilized to support the core laminations in such a manner that wedges used to fix in place the windings of the circuit can be readily adjusted beneath the area of the T-shaped beam. The bars are tensioned in place by adjustment of the wedges between the lower area of the windings and the tank sidewalls. The beam is then placed on the edges and anchored thereon.

Abstract: For hydraulically clamping transformer windings, hydraulic pressure generating boxes are arranged between the bottom wall of the transformer tank and a plate which supports the transformer yoke. The transformer coils which surround the legs are supported from the plate by clamping boxes which are connected by conduits to the pressure generating boxes to transmit hydraulic pressure therebetween.

Abstract: A magnetic locator in which flux-gate sensors are mounted in longitudinal notches or grooves at the ends of a tubular support to form an assembly which is inserted into a tubular housing, the sensors being press-fitted into the notches and the tubular support being provided with spaced bushings of material which are compressed when inserted into the housing. A stiff hairpin excitation conductor extends through the sensors and through the tubular support, being preassembled with one of the sensors. A simplified electrical circuit is employed which produces a beat frequency signal when a magnetic object is located and which avoids the need for a voltage to frequency converter.

Abstract: A magnetic core arrangement for shell-form power transformers. A main core structure is divided into two core portions by a gap which separates the core laminations. Two shielding cores are located on each side of the main core. Double-webbed beams are positioned underneath the main and shielding cores to support these cores from the transformer tank. One web of a beam extends into part of the gap between the main core portions. The other web of the beam is located between the outermost main core portion and one of the shielding cores. The gap in the main core structure improves the cooling of the magnetic laminations and the web members of the beam enhance the support for the core laminations.

Abstract: An A.C. anti-radiation choke coil for a device such as a television set is inserted in a metal can and positioned and insulated therein by a hinged container of insulating material that closely encloses the choke coil; each section of the hinged container is provided with a part of a tubular extension which, when the container is closed, provides a full tubular conduit for the leads of the coil, spacing the leads, electrically and mechanically, from the edges of the opening in the can through which the leads extend.

Abstract: An ignition coil for use in the ignition system of a spark-ignited internal combustion engine consists of a small number of parts capable of being assembled into a complete unit by a simple assembly method. The method is such that some of its basic steps may be carried out on a batch of units at one time to reduce the per unit assembly time and expense. The coil may be either double ended or single ended with regard to its secondary winding.

Abstract: The present invention relates to a self-induction device capable of steep saturation when the instantaneous value of a current flowing therethrough goes beyond a given level. The device comprises an annular magnetic core including at least one toroid coil of magnetic material, an insulating structure for supporting the coils and at least one insulated conductor coil embracing a section of said magnetic core. A tank encloses the core and the coils, the tank being provided with at least one input conduit for feeding a refrigerating fluid to the core and of at least one output conduit for the fluid. The insulated conductor coil is constituted of an insulated flexible cable wound around the insulating structure. The extremities of each conductor coil are so connected with the other conductor coils to effect a desired coupling, the so coupled coils being connected to an utility circuit.