Abstract: A face connected instrument transformer is disclosed having a plurality of transformation ratios comprised of two primary windings and a single secondary winding. Each primary winding is electrically connected to a pair of terminals disposed adjacent to opposite faces of the transformer housing for engaging contacts within a molded case circuit breaker housing. The transformation ratio of the instrument transformer is changed by removing the instrument transformer from the circuit breaker housing and inserting the opposite face.

Abstract: A high-voltage current transformer of the head design with a column made of insulating material which supports the head housing. The primary lead is approximately U-shaped, whereby only its horizontal base passes through the central opening of secondary system and at least one of its two legs passes downwardly through a sealing plate in an insulating-medium-tight fashion to outside the space delimited by insulating column, and is contactable from below. The other of the two legs passes through sealing plate in the case of a switchable primary lead likewise downward in an insulating-medium-tight fashion and is directly contactable or in the case of a non-switchable primary is electrically connected to the sealing plate without any holes therethrough. The head housing, designed as hood, also completely encloses primary lead and secondary system from above and is fastened in an insulating-medium-tight fasion to sealing plate.

Abstract: One of a plurality of taps of at least one transformer is selected by choosing a predetermined plug to mate with a predetermined jack. The connection arrangement between each transformer and a corresponding jack is such that each pin of a respective jack is operatively connected to a predetermined transformer tap of the corresponding transformer whereby the corresponding taps of each of the transformers are connected to different corresponding pins for each of the corresponding jacks. Further, the starting tap of each transformer is operatively connected to the same corresponding pin of the jack corresponding to the transformer. A plurality of plugs, the number of plugs corresponding to one less than the number of pins of the jacks, is included whereby each plug has a plurality of mating pins corresponding to the pins of the jack. Each mating pin of each plug which corresponds to the pin of the starting tap is operatively connected to a first supply terminal.

Abstract: A solenoid actuator including a coil of electrically conductive wire, a yoke of magnetic material surrounding the coil, and a non-electrically and non-magnetically conductive material encapsulating the coil and yoke. A pair of terminals connected to the ends of the coil project outwardly beyond an exterior surface of the encapsulation. Any of a variety of electrical connection modules is adapted to receive the coil terminals and electrically connect them to standard electrical connectors projecting from the module. Different modules have different forms of standard electrical connectors, so that regardless of the type of connector available at the source of electric power, a suitable module can be connected to the encapsulated coil for cooperation with the power source connector. The body of each module is formed of resilient material so that when the module is tightly attached to the coil encapsulation, a seal is formed completely surrounding the coil terminals.

Abstract: An explosion-proof plug includes a first casing part having two ends and an outer wall having an edge and defining a compression-resistant annular chamber being open toward one of the ends, an annular transformer disposed in the annular chamber, a cover secured to the first casing part covering the annular chamber and the transformer, a second substantially bowl-shaped casing part adjacent the edge of the outer wall, the second casing part and the cover together defining a first connection space with increased security as compared to other portions of the plug for receiving connecting cables to be connected to the transformer, a third casing part securely connected to the first casing part defining a second space of increased security, and plug pins being held in the third casing part and connected to the transformer.

Abstract: A snap-fitting cover assembly for the terminal block (12) of an electrical transformer (10) comprises a backing plate (18) having apertures (20) for receiving terminals (14) of the transformer and adapted to be mounted against the terminal block (12). The width of the backing plate 18) is slightly greater than the width of the terminal block (12) so that opposite side portions (A) of the plate (18) extend beyond the block. A cover (28) adapted to fit over the backing plate (18) and block (12) has a pair of inwardly extending ears (26) that snap fit around the extending portions of the backing plate (18). With the backing plate (18) secured to the transformer terminals (14) by nuts (24), the cover (28) is retained to the terminal block (12) by a seal wire (34) extending through the cover (28) and behind the plate (18).

Abstract: A cover assembly is provided for electrical connections of a portable transformer. The cover assembly includes an inner cover plate of a size and shape to fit on an input end of the transformer. The inner cover plate has a large opening to provide easy access for connecting leads to terminal posts. An outer cover plate attaches over the portion of the inner cover plate having the large opening with the two plates having matching grooves which engage and firmly hold an outer insulating sheath for the leads. The cover assembly is compact so as to add minimal additional length to the transformer. It is also rugged and can take considerable physical abuse.

Abstract: A plug-in type of power supply, as an improvement of regular power supply units, specifically a separate structure of the transformer apart from the frame shell, structured to have the terminals on the output side of the transformer plugged into the circuit board so as to achieve in coupling with the power plunger provided on the bottom lid of the frame shell by means of a joint piece made of phosphoric copper, thus sealing up the frame shell, the transformer and the circuit board in the meantime being secured in the frame shell to become a finished power supply unit, the structure of such a power supply unit designed as such through straight-in plunge-in plugging thereby simplifying assemblage and facilitating replacement of parts during assemblage processing, and quality control running as well, thus serving to reduce failure and rejection rates of the products and to aid in automatic mass production by virtue of such piecewise assemblage processings.

Abstract: Several embodiments of coil assemblies suitable for a variety of uses are disclosed herein all of which employ spiral windings which minimizes coil layer-to-layer voltage gradients to levels which conventional enamel wire insulation is able to withstand. In one embodiment a spiral winding is fabricated in strip form using a continuous strand of wire secured to a continuous ribbon-like substrate by an adhesive composition which may be provided on the wire so as to form a plurality of spiral windings on segments or portions of the substrate, each winding having one turn in each radial layer. The substrate will include other segments located between each winding portion to provide insulating means for the spiral windings and for the transition of the wire as it passes to the next successive winding containing segment.

Abstract: A method of coating an inductive stabilization ballast for a discharge lamp with an insulating layer and to a stabilization ballast (1) coated by means of this method. The ballast is immersed, together with a synthetic resin cover (10) covering plug-in contact sockets (4 and 5), in a bath (31) of hardenable liquid insulating material. After immersion, a looped suspension member (12)--which was used during the immersion--is broken from the synthetic resin cover so that the electrical plug-in contact sockets become accessible again. This method prevents the plug-in contact sockets from being coated with insulating material.

Abstract: An ignition coil for spark ignited internal combustion engines intended for mounting on and connection to a spark plug which simplifies high voltage distribution, promotes maintenance and safety, lessens radio interference, and reduces exhaust emissions. The ignition coil preferably has a tight fitting resilient insulating boot engaging the spark plug. The boot member preferably has an air passage with a contaminate filter for facilitating the insertion of the boot on the spark plug. One embodiment includes a grounding member connected to the ground lead of the primary winding of the ignition coil which engages either the grounded portion of the spark plug or the cylinder head for grounding the primary winding of ignition coil.

Abstract: The primary coil body (10) with its coil, the secondary coil body (11) with its coil and also the high voltage connector body (12) with a connector (13) therein are separate bodies put together by snap connections to provide a pre-assembled unit. A dual connector for the primary coil ends may also be provided as a separate part snap-connected to the primary coil body. The center leg of an E-shaped core part passes through the primary coil body, the latter having a cross extension on which a straight core member fits passing across the ends of the legs of the E part. After perfecting electrical contacts by soldering or welding, this unit is inserted into a single-use mold and is embedded in an insulating casting resin by injection molding. As a result of the snap-type fitting together of the coil bodies and the high voltage connector, as well as the low voltage connector body similarly fastened onto the primary coil body, it is possible to use a one-piece single-use mold for the injection molding operation.

Abstract: A flyback transformer includes a coil unit, a variable resistor unit detachably mounted on the coil unit and a connector for electrically connecting the coil unit and the variable resistor unit. The coil unit has a casing, primary and secondary coils accommodated in the casing, and a terminal which is electrically connected to a center tap of the secondary coil through a lead line extending inside the casing. The variable resistor unit has a circuit board deposited with ohmic resistance stripes and a terminal which is electrically connected to the circuit board. The connector having a U-shape configuration electrically connects the terminal of the coil unit and the terminal of the variable resistor unit.

Abstract: An electrical component and housing module for an electrical appliance circuit, adapted to be plugged into a conventional wall outlet. The module has a base plate and a recessed cover formed of dielectric material and assembled to define a protective enclosure. The base plate has a relatively small, rectangular opening and the cover has walls including at least two opposed walls with ventilation slots. The base plate also has resilient means that cooperates with the slots to anchor the cover to the base. The electrical circuit component is secured in the enclosure, and is connected to the electrical appliance by a conventional power cord that extends through the cover. A wall-plug-type connector with an insulating body and contact prongs is electrically connected to the circuit component and has its contact prongs extending through the opening in the base plate for insertion into a wall outlet.

Abstract: An adaptor for the connection of a low-voltage lamp to mains voltage has a housing with an assembly member which has a flange and a tubular part. The tubular part projects through an aperture in the housing and is connected to a lamp cap. The lamp cap and the flange retain the housing in position. A ring core transformer is present in the housing around the tubular part. The assembly member bears a lamp holder for a low voltage lamp.

Abstract: A coil assembly, in particular for shaded-pole motors, in which at least one edge of a coil form flange has a molded connecting pocket (typically 4, 5, 6, 7) containing groove (18) by snap-in type of covers (8), with one end of the groove (18) containing a recess (cavity 23) and a blind bore (20). A conductive member connecting sleeve (11) is inserted into the blind bore (20), the sleeve being of tubular construction at its end opposite the blind bore. The sleeve includes a conductive pin (13) projecting at a right angle, and has a narrow (taper) (22) producing a "weak" point (taper) about which the sleeve is bent into the recess. Pin (13) has an end of the winding attached thereto before sleeve 11 is bent, such that the connection is enclosed in the recess. Attachment of a Litz wire (pigtail) is by crimping into the end of the sleeve. The Litz wire lays in the groove and is captured by teeth (14) which bite into its insulation from the inside surface of the cover (8) thereby providing strain relief.

Abstract: A solenoid operated directional valve comprises a plug-in type solenoid which makes electrical connection with a terminal block on the valve body via plug-in type terminals. The plug-in type terminals are on a connector element which is selectively positionable on the solenoid to select either a portion of the solenoid winding which is for 60 hertz energizing current or a portion which is for 50 hertz current.

Abstract: A flyback transformer includes a casing and a coil-block accommodated in the casing. The casing has a guide opening communicating between inside and outside of the casing. The coil-block has a tongue portion which is formed with an opening. A cap member made of brass is supported in the opening of the tongue portion with an opening of the cap member being in alignment with the guide opening. The outside of the cap member is electrically connected to a wire extending from the coil-block and inside the cap member fittingly receives a lead wire which has been inserted into the casing through said guide opening.

Abstract: Different line-cord sets connect an electrical device to different supply voltages, assuring that the supply voltage matches the device. Each line-cord set has a uniquely keyed socket and a wall plug. A device receptacle receives the line-cord's keyed socket. An adjustable key on the device mates with the socket's key and rejects nonmating sockets to admit the socket into the receptacle and adjusts the device's input voltage to match the supply voltage.

Abstract: A fuel injection nozzle holder for internal combustion engines is proposed having an induction coil glued into an intermediate disc provided with two contact springs, which first are connected with the ends of the winding and second are embodied as contact tongues. Each tongue, together with an insulated wire lead, makes a releasable contact within the nozzle holder body.

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: Single-phase transformer, including windings being wound around an axis and cast in resin forming a cast resin body, the cast resin winding body having an outer surface and a rectangular window formed therein with sides disposed in given planes, a wound core formed of tape material extended through the window, two flanges being cast with and integral with the cast resin winding body on opposite sides thereof and parallel to the winding axis and to the window, the flanges having outer edges, mutually parallel inner surfaces substantially disposed in the plane of the narrow sides of the window and grooves formed in the inner surfaces in the vicinity of and parallel to the outer edges, an encapsulation for the wound core being anchored in the grooves, and a grounded metallization layer formed on the outer surface of the cast resin winding body at least immediately adjacent to the wound core.

Abstract: A current transformer is encapsulated in an injection molded layer of insulating material. The current transformer includes a secondary terminal assembly having individual terminals mounted on a terminal board. The terminal board is formed of a material that softens within the normal processing temperature range of the encapsulating material and forms an amalgamation therewith without a distinct interface between the terminal board and the encapsulating material which thereby provides a fluid-tight seal around the terminal assembly. The individual terminals have an intermediate shoulder disposed adjacent the top surface of the terminal board to prevent the molding material from covering the terminal assembly during the injection molding operation and, further, to provide a sealing surface for the molding material around the terminal assembly. A shorting bar is rotatably mounted between the terminals and rotates between a closed position shorting the terminals and an open non-shorting position.

Abstract: An ignition coil for a single spark plug includes a coil from which a contact terminal projects, the coil and contact terminal being carried by an elastic body, such as an elastomer, that has a cavity in which the terminal is disposed and which is receptive of the contact and at least a portion of the insulator of the spark plug whereby a seal is provided therewith, there being a sprung coaction with the spark plug, thus eliminating high voltage wiring from the ignition system.

Abstract: Multiphase transformer for power distribution in a supply network includes a single block of cast resin having high voltage and low voltage conductor windings embedded therein, and an iron core with a plurality of legs and an upper and lower yoke formed of closely-stacked transformer laminations centrally embedded in the block, the block having axially-extending ribs integral therewith defining troughs between the ribs and defining spaces between the ribs and the core, legs and yokes, watertight caps disposed between the ribs closing off the troughs and holding the core, legs and yokes, and mechanically compacted dry quartz sand filled in the space.

Abstract: A universal battery charger/adapter unit is disclosed comprising a wall power unit and a separate cable which may be plugged into an appliance. The wall unit makes available different AC and DC voltages. A selected pluggable cable section is wired to selectively connect appropriate AC or DC voltages to the appliance being powered. The cable section has the further characteristic that current limiting or current regulating elements may be incorporated therein to improve the particular AC or DC voltage or current characteristics of the power unit with respect to that particular load. A battery nest can be permanently connected to a special bifurcated plug allowing the recharging of rechargeable AA, C or D size batteries in addition to 9 volt batteries. Interchangeable shims are used to compensate for various battery sizes.

Abstract: A current transformer is encapsulated in an injection molded layer of insulating material. The current transformer includes a secondary terminal assembly having individual terminals mounted on a terminal board. The terminal board is formed of a material that softens within the normal processing temperature range of the encapsulating material and forms an amalgamation therewith without a distinct interface between the terminal board and the encapsulating material which thereby provides a fluid-tight seal around the terminal assembly. The individual terminals have an intermediate shoulder disposed adjacent the top surface of the terminal board to prevent the molding material from covering the terminal assembly during the injection molding operation and, further, to provide a sealing surface for the molding material around the terminal assembly. A shorting bar is rotatably mounted between the terminals and rotates between a closed position shorting the terminals and an open non-shorting position.

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: A low tension and a high tension coil on a flyback transformer are coupled together with an output rectifier connected with the high tension coil by enclosure of an electrically insulating material. A hollow cylindrical connector body of an electrically insulating material is attached to the enclosure, and has one end of a greater inner diameter than that of the other end, with a step formed intermediate the both ends. Said one end of the connector body is disposed within the enclosure and is adapted to receive a conductive cap electrically connected with the rectifier while said other end opens outside the enclosure. The flyback transformer is mounted on a television receiver, and the end of a high tension lead wire is inserted into the connector body of the flyback transformer through said other end in order to supply the rectifier output to a cathode ray tube.

Abstract: An ignition coil wherein the high tension terminal carried in a bore in the cap of the coil is movable relative to the cap. The terminal acts as a valve member in the bore and is movable between a position wherein the bore is closed and a position wherein the bore is open. The bore can be used as the means whereby oil is introduced into the casing of the coil if the coil is to be oil filled.

Abstract: An electrical coil having a bobbin including a central core and a pair of spaced parallel flanges extending from the core with a coil of fine wire wound upon the central core is disclosed herein. One of the flanges has a terminal block which supports connections between the respective ends of the fine wire and terminal leads that extend away from the coil. Each connection consists of a tubular member that has an enlarged head engaging one surface of the terminal block with the terminal block having an enlarged opening surrounding the tubular member and the free end of the fine wire is connected to the enlarged head. The terminal lead wire can be connected directly into the tubular member or be connected through a sleeve that can be telescoped over the tubular member. The tubular member may also be used as a plug-in arrangement.

Abstract: A multiple choke assembly comprises individual chokes assembled side by side and in close proximity, mutual inductance phenomena occurring between adjacent chokes being minimized by alternating the lay of adjacent chokes. The disclosure also includes a description of a preferred arrangement utilizing a two-choke assembly for the burn protection of patients undergoing electrosurgery at times when electrocardiograph electrodes may be attached to the patient's skin.

Abstract: An ignition coil for an internal combustion engine comprises a magnetic c having a plurality of arms lying at an angle to each other, a primary inductive winding on one of said arms and a secondary high voltage winding on another of said arms.The primary and secondary windings are on adjacent arms and have intersecting axes, with a plane through one end of one of said windings perpendicular to the axis of said one winding intersecting both ends of the other winding.

Abstract: A device for inducing an electrical voltage comprises primary and secondary windings wound round a core. The core has a first part responsive to high frequencies and a second part responsive to low frequencies. The axial length of the first part does not exceed the axial length of the second part, but exceeds the axial length of primary and secondary windings.

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: An encapsulated transformer in which the coil and core assembly of the transformer is encapsulated within a jacket of non-flexible epoxy resin, and a cushion of closed-cell foam rubber lies between the jacket and the coil and core assembly to preserve the integrity of the jacket while enabling thermal expansion and contraction of the core and coil assembly. Electrical contact members are integral with the jacket and are electrically connected to the core and coil assembly by flexible electrical leads.

Abstract: A component holder is arranged on the windings of a diode-split line transformer. On this holder the diodes, the focus bleeder and the high-voltage bleeder can be arranged. The connection strips of the components act as soldering pins for the winding ends. The high voltage is connected via a socket connector which is clamped to the component holder by way of two snap tags. The socket connector is provided with radially extending ribs so as to increase the creepage path. The contact spring of the socket connector has a triangular shape, thus ensuring a large contact surface area.

Abstract: A dual-voltage electric plug comprising an insulating hollow casing having an opening, a terminal fitting within the casing, said fitting including four conducting terminal pins extending towards the opening in the casing, which four terminal pins are respectively connected or connectable to four conductors constituting two pairs across which are respectively connected two primary windings of a transformer having a common secondary winding, and an insulating insert insertable into the opening in the casing in either one of two differing orientations, said insert carrying live and neutral projecting socket pins for cooperation with a mains voltage socket, said insert also carrying connecting means located within the casing when the insert is in its inserted condition and for completing differing circuit paths through the socket pins and the terminal pins in the two respective orientations of the inserted insert, whereby in one orientation the two primary windings will be connected in series to provide a predet

Abstract: A power-pack assembly including a bobbin, at least primary and secondary windings wound on the bobbin and a core carried by the bobbin. Solderless connection devices are secured to the bobbin and electrically connected to the windings. The solderless connection devices include clips which engage input and output terminals to make an electrical and mechanical connection therewith. In a preferred embodiment, the terminals are carried by a terminal block which provides a single step plug-in connection between the connection devices and the terminals. A core-grounding system is also disclosed which includes a core-grounding terminal, a spring for electrically contacting the core and a clip secured to the bobbin for engaging the core-grounding terminal and maintaining it in electrical contact with the spring.

Abstract: A dry-type instrument transformer having a potential tap in the form of a well molded into the body of the transformer. A female conductor terminal is provided inside the well connected to the high voltage winding of the transformer. A connector in the form of an elbow module fits within the well and has a male conductor member which mates with the female member. A ground coating is provided on the exterior surface of the transformer and is in conductive relation to a ground coating on the elbow module. A metering system having a potential transformer and a current transformer each with a potential tap and connected together by a pair of interconnected elbow modules.

Abstract: The transformer, in particular a potential transformer, comprises a generally planar bushing insulator, dimensioned for a liquid or gaseous insulating medium and coaxially enclosing a high-voltage connector, and a flange section enclosing the bushing insulator. The bushing insulator is also enclosed by an intermediate flange filled with a liquid or gaseous insulating medium. One end of the intermediate flange is connected to the instrument transformer and the other end of the intermediate flange is connected to a self-contained high-voltage bushing. A high-voltage connector of the transformer is connected to a conductor of the high-voltage bushing in the space enclosed by the intermediate flange.

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: A power pack unit includes a casing and cover and a transformer subassembly having a molded bobbin of insulating material which receives primary and secondary lugs, a selected primary and a secondary winding configuration, laminations, A.C. terminals, connecting wiring, and a bobbin-mounted switch. This switch is positionable external of the casing for connecting selected primary or secondary taps as required to accommodate to a particular A.C. supply, i.e., 110 or 220 volt A.C., or to provide a selection of A.C. or D.C. output voltages.