Abstract: A static plate and liquid distribution manifold construction for vertical coils of electrical inductive apparatus, characterized by a plurality of vertically stacked pancake coils, manifold means comprising an inner rigid core of dielectric material, a coating of metal foil on the core, and a flexible bladder enclosing the rigid core and metal foil structure above the plurality of stacked coils, a plurality of radially spaced spacers between the coils and between the top coil and the manifold means, pressure means for compressing the assembly of the manifold means, the spacers, and the coils, an inlet means for introducing a coolant into the manifold bladder whereby the coolant fluid after leaving the manifold is fed by gravity downwardly over the several stacked coils.

Abstract: A low profile transformer includes an E - I core having two outer legs and center leg. A pair of connecting pin headers have recesses in friction-fit contact with the inner portions of the outer legs; each header is also recessed, at each end, and is in friction-fit contact with the inner portion of the E-core which joins the legs and the I-bar. A coil wound bobbin on the center core leg has flanges which abut and brace against the pin headers to secure said headers in position. Pins on the headers enable mounting on a printed circuit board.

Abstract: A transformer cooling duct arrangement wherein the transformer winding sections are encompassed by an inner and outer insulating oil barrier and inner and outer blocks are employed to direct the oil flow in a labyrinth path throughout the winding sections. The inner oil block consists of a plurality of individual slotted blocks slidably mounted between corresponding pairs of radial spacers. The slidably mounted block arrangement allows the individual blocks to tightly contact the inner barrier during the transformer dry treatment process.

Abstract: A vaporization cooled transformer is provided with rectangular windings in which the cooling ducts are integrally formed by pressing the coils with a hydraulic press. The coils are smaller than windings in which cooling channels are formed by insulating spacers. The smaller windings result in a savings in conductor material, core material, fluid, and tank plate.

Abstract: To reduce the ohmic losses in a sheet-wound transformer or reactor winding, edge regions of at least some of the turns of the conductor sheet forming the winding are located at a different distance from the geometric axis of the winding compared with the distance from said axis of a central conductor portion in a respective one of said turns. Preferably the conductor sheet in each turn substantially follows the flux lines for the resultant magnetic leakage flux which corresponds to a constant current density in the sheet. For example, the winding may be wound from a metallic foil whose edge regions are folded back on themselves, or end regions of the winding may be provided with inter-turn packings (e.g. of tape) to achieve the desired flared shape of the turns at the ends of the winding.

Abstract: In an induction heating apparatus, direct sensing of the high frequency high power current flowing in the tank circuit to load the induction coils, is obtained with a coil current measuring transformer comprising one of the power current busses leading to the induction coil and a secondary winding of many ampere-turns wound around said one bus. The bus is given a half-loop shape to accommodate the secondary winding. The secondary winding is made of a magnetic core wound with many turns of Litz wire. Cooling tubes are cemented outside the wound secondary with conductive cement to form a heat sink with a circulation of cooling medium through the tube. The cement is divided in two parts separated by gaps to prevent circulation of induced currents. A cooling tube is installed between the core and wound wire to provide an internal heat sink.

Abstract: The present invention preferably comprises a modular air core coil inductance assembly which is comprised of a plurality of spiral windings which are magnetically coupled to each other and disposed in planes which are orthogonal to the longitudinal axis of the resultant air core coil. The modular air core coil assembly may preferably comprise a plurality of air core coil subassemblies each of which preferably comprises at least one spiral winding disposed on a winding support member, with the winding preferably being an electrical conductor wound in the shape of an Archimedes spiral disposed in a plane orthogonal to the longitudinal axis of the coil; a fixing or holding member which is disposed facing the spiral winding in order to set or hold it in position; at least two shields fixed on the coil ends in order to prevent magnetic coupling between the different coils; and at least two spacing members disposed so as to obtain the desired distance between the shield and the winding.

Abstract: An iron core shunt reactor is constructed of a plurality of foil windings coaxially positioned along an iron core a discrete distance from each other. A coolant circulates axially along the core and radially outward between each of the foil windings providing the shunt reactor with improved thermal characteristics.

Abstract: An impedance coil core which includes a plurality of core legs and yokes which interconnect the core legs in an assembled condition of the core is provided with aligned recesses in the yokes and in the core legs for accommodating tensioning bolts which extend into the recesses and press the yokes against the core legs in the assembled condition. Each of the core legs includes a plurality of laminated assemblies including sheet metal elements. Those portions of the yokes and at least of the laminated assemblies adjoining the latter are provided with non-magnetic intermediate layers in the central region which is provided with the recesses. The intermediate layers in the core legs are wedge-shaped and diverge toward the adjacent yokes, and the intermediate layers in the yokes are cross-sectionally rectangular.

Abstract: The doughnut-type transformer comprises a spirally wound core consisting of several individual annular cores each tightened by rod members. The annular core is surrounded by transformer sections comprising the primary and the secondary windings. Each winding is composed of turns shaped as sectors in the plane of the transformer cross-section, a cooled turn of the secondary winding being placed between the turns of the primary winding in each transformer section. The turns of the windings surround the annular core so that the geometric center of each winding is displaced from the geometric center of the annular core in the cross-sectional plane thereof and the geometric center of the annular core is farther from the transformer axis.

Abstract: Certain windings in a transformer are subjected to radially inwardly-directed forces while being short-circuited. If such a winding is not sufficiently stable itself, particularly with respect to tape windings, or does not have sufficient support radially outwardly or inwardly, it will buckle or break. To prevent such an occurrence, it is possible to arrange an outward support around the winding by completely or partly filling up the space between the winding, which is subjected to buckling stress, and a second winding positioned outside the first winding. Additionally, there is required an inner supporting cylinder, which is preferably made of metal, so that it can be made relatively thin.

Abstract: A regulating winding for a high power transformer which includes a conductor bunch having a multiplicity of series-connected, parallel conductor loops, each loop comprising at least two parallel loop strands. The conductor bunch includes a number of radial and/or axial cooling channels, and the loop strands and the cooling channels are so arranged that the voltage difference between two loop strands located adjacent each other, and preferably positioned together between two cooling channels, is considerably higher than the voltage difference between loop strands positioned on either side of the cooling channels.

Abstract: The invention relates to a magnet coil arrangement for generating a magnetic field which is homogeneous at least in its center, preferably for magnetic resonance spectroscopy. The arrangement consists of four flat ring coils whose coil planes extend perpendicularly to an axis of examination which extends through the coil centers. The coils are symmetrically arranged with respect to a point situated on this axis. By means of a magnetic coil arrangement of this kind, a magnetic field can be generated which extends in the direction of the axis of examination and rotationally-symmetrically with respect thereto and which, in comparison with the magnetic fields generated by means of known coil arrangements, has an improved homogeneity in the direction perpendicular to the axis of examination over a larger range which extends in the direction perpendicular to the axis of examination in the center of the magnetic coil arrangement.

Abstract: An improved normal or superconductive field coil constructed so that individual coils are both axially and radially stable. The individual coils are provided with a holding cylinder at each end with the conductor ends being fixed to the holding cylinder. In another embodiment an electrically insulating, reinforcing cylinder is fixed to the outer periphery of the coil.

Abstract: Winding structure for static electrical induction apparatus such as transformers, reactors, or the like. A winding assembly is disposed in a space formed between a pair of inner and outer insulation continuous walls which are disposed in a container so as to commonly include the vertical axis of the container thereby defining the space therebetween. An inner vertical coolant passage is formed between the winding assembly and the inner insulation wall and an outer vertical coolant passage is also formed between the winding assembly and the inner insulation wall. The winding assembly is composed of a plurality of coil units stacked on one another in the vertical direction with separation at predetermined intervals so as to form horizontal coolant passages between vertically adjacent ones of the coil units, the inner and outer vertical coolant passages communicating with each other through the horizontal coolant passages.

Abstract: A polyphase sector type transformer includes one magnetic core ring per phase, each of which has two rectilinear sides which are adjacent to each other. Each rectilinear side of one magnetic core ring is disposed contiguously with one of the rectilinear sides of an adjacent core ring whereby each magnetic core ring occupies a sector of the magnetic circuit of the transformer. Each pair of contiguous rectilinear sides is threaded through a coil of the transformer said coils comprising a high tension winding of trapezoidal cross-section and a low tension winding of rectangular cross-section.

Abstract: A device for effecting mechanical prestressing in a pair of substantially concentric cylinders, in which the inner cylinder is prestressed in compression and the outer cylinder is prestressed in tension by means of the device in the form of a hose or hoses disposed in a gap between the cylinders and being subjected internally to a pressure medium, the hose or hoses being arranged helically in such a manner that the sum of the moments of the forces thereby caused by the pressure forces between the cylinders and occurring about the central axis of the cylinders in a plane containing such axis, is substantially zero.

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 plurality of winding units mounted about a magnetic core structure, each of which consisting of wound wire elements, are disposed and stacked in an annular space defined by a coaxial inner and outer insulating sleeves, so as to form a winding structure for electric devices. Vertical passages for cooling fluid are defined at both sides of the winding units, while horizontal passages for the cooling fluid are formed between adjacent winding units. A plurality of peripherally continuous flow controlling bodies are disposed in either one of the vertical passages at a two vertical pitches of the winding unit, so as to confront alternating ones of the winding units. Alternatively, the flow controlling bodies are disposed alternatingly in both vertical passages, in such a manner that the flow controlling bodies disposed in one of the vertical passages confront alternating ones of said winding units which are not confronted by the flow controlling bodies disposed in the other vertical passage.

Abstract: A cooking apparatus employing induction heating is normally constructed so as to utilize a metal housing supporting a cook top upon which there is located at least one induction heating coil. The housing normally contains an electronic "package" for use in supplying power to the coil or coils used and a fan for circulating air through the housing so as to maintain the temperature of the electronic components employed sufficiently low that they will not be damaged by heat. In the disclosed apparatus a thermistor is mounted on the housing adjacent to the wires connecting the electronic components to the heating coil or coils used. This thermistor is used to control the flow of current through an SCR or a triac acting as a switch in a circuit containing the fan motor.

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: Insulation structures for use in the insulation space and with the phase barrier insulation of an electrical inductive apparatus. The insulation structures include at least one layer of spaced, vertically-extending spacer members which is surrounded on both sides by layers of electrical insulating sheet material. The insulation structures are disposed in movable relation with the adjacent windings and phase barrier insulation, thereby allowing relative movement between the windings and the insulation structures during a short circuit.

Abstract: Disclosed is an electrical transformer having a core and coil assembly mounted in a hollow case and a method of manufacturing the case. The hollow case has cast at least one cooling duct within it. Each cooling duct is a hollow tube, formed into a loop, with its ends brazed into a manifold. The manifold has nipples brazed into it which provide a connecting passage for the flow of coolant through the nipples into the manifold and through the tubes that have been cast within the transformer case.

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: Electrical inductive apparatus cooled and electrically insulated by a vaporizable liquid dielectric having a boiling point within the normal operating temperature range of the apparatus. When the electrical inductive apparatus is at ambient temperature, the liquid dielectric completely fills the enclosure providing electrical insulation for the electrical members. As the temperature of the apparatus increases towards its normal operating range, the liquid dielectric is gradually withdrawn into a reservoir until, at the normal operating temperature, only a quantity of liquid dielectric sufficient to completely cover the electrical inductive apparatus remains in the enclosure. In response to a temperature decrease, the liquid stored in the reservoir is gradually returned to the enclosure thereby maintaining a constant level of dielectric strength between the electrical members.

Abstract: In a three-phase and three-leg core structure of a core-type transformer comprising three main legs of a substantially circular cross-sectional shape and a yoke of a non-circular cross-sectional shape for magnetically connecting the three main legs, each of the three main legs having a cross-sectional area substantially equal to the cross-sectional area of the yoke, wherein at least joints between the steel plate laminations of a center main leg and the adjoining steel plate laminations of the yoke are in a mitered oblique joint without requiring the shearing of the ends of the steel plate laminations, and the edges of the leg and yoke laminations at which edges the oblique miter joints are formed approach each other in length.

Abstract: A single-phase three-legged core for a core type transformer in which a plurality of steel sheets constituting each layer of laminations of a main leg are jointed at their diagonally cut sides to corresponding sides of a plurality of steel sheets constituting each layer of laminations of yokes to form a plurality of joints. At the inner corner portion of each joint, a recess is provided along the main leg or yoke steel sheet having a greater width than the other, so that a plurality of main leg laminations having stepwise varying width can be jointed to a plurality of yoke laminations at the same joint angle in the area of the recesses thereby simplifying the step of sheet cutting. At the outer corner portion of some of the joints, the vertex of the diagonally cut side of the corresponding main leg steel sheet mates with that of the associated yoke steel sheet to provide an outer corner joint, so that magnetic flux can uniformly pass through the joints to minimize the core loss.

Abstract: A dry insulated, impulse voltage resistant, multi-layer series wound coil having air ducts between layers for use in transformers, reactors, and the like is made with minimum solid insulation spacing between adjacent conductors and maximum air spacing radially between coil layers. The method of making includes winding on a form of alternate layers of insulation and conductors. After one layer of winding is complete, cloth-wrapped duct-forming molds are supported on the windings and further insulation and conductors are wound around the whole assembly. When the desired number of layers is complete, the assembly is vacuum cast in a resin and the forms and the molds are then removed.

Abstract: A fluid distribution manifold for a vaporization cooled electrical apparatus. The manifold includes a flexible conduit of predetermined shape having a plurality of longitudinal and circumferential spaced apertures therein which distribute a vaporizable dielectric fluid uniformly and economically over the electrical apparatus.

Abstract: A flexible, nontacky prepreg for use in bonding high voltage coils and inner cooling channels which comprises a fibrous mat material containing a high molecular weight epoxy and a sterically hindered anhydride. The resin comprises approximately 25 to 500% by weight of the fibrous mat material.

Abstract: A post type oil filled current transformer having a U-shaped primary winding formed of a tubular conductor. An oil flow controlling hollow tubular member is disposed within the primary conductor. The tubular oil flow controlling member is vertically oriented and spaced from the internal wall of the tubular primary winding to define inner and outer coaxial paths permitting a downward flow of cool oil in the inner path within the tubular member and an upward flow of heated oil in the outer path between the tubular member and the inner wall of the primary winding.

Abstract: A hermetically sealed vaporization chamber contains a vaporization cooled transformer to be cooled while dielectrically protected and two phase dielectric fluid comprising a liquid and a vapor. The transformer includes a plurality of cooling ducts extending vertically therethrough. The liquid, which resides at a bottom portion of the chamber and has a liquid level above the bottom of the chamber, is also distributed as a film which coats the top and the wall surfaces of the vertical ducts. A distribution pan with an outer rim is positioned above the transformer for receiving liquid condensate from said condenser. The rim portion of the distribution pan is provided with a plurality of apertures to distribute the liquid condensate uniformly as a film over the wall surfaces of the associated vertical ducts. At least one condensate make-up pump is provided for pumping liquid from the bottom portion of the chamber to the distribution pan.

Abstract: An electrical coil comprised of sheet conductor is wound with dry film insulation between turns. The entire structure is maintained in a compressed gas environment, rendering harmless any small voids that may exist in the insulation. Cooling ducts of thin, cylindrical annuli are wound into the coil at intervals, and are completely sealed except for two places where they connect with inlet and outlet pipes.

Abstract: A rotary transformer includes rotor and stator cores arranged apart from each other. The rotor core is made of a plurality of U-shaped core plates which are laminated around a rotary shaft and supported by a pair of plates engaged with the opposite side ends of the rotor core and by an insulative band winding the bottom of the annular recess for receiving a rotor coil.

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 reactor core includes a plurality of laminations of trapezoidal shape forming the legs of the core. These legs are arranged in generally rectangular configuration with air gaps provided at the corners of the core. These air gaps extend diagonally of the core legs and are formed between the inclined faces of adjacent ends of the trapezoidal-shaped core legs. End plates each having a longitudinal section extending parallel to and fixed to one of the legs and having flanges at each end of the longitudinal section extending perpendicularly to the longitudinal section are provided for maintaining the legs of the core in assembled relation and for effecting adjustment of the air gaps. The end plates include elongated openings in the flanges thereof for permitting movement of each of the end plates, and the leg to which it is affixed, relative to the remainder of the core for varying the size of the diagonal air gaps.

Abstract: This invention relates to improvements in systems for force-cooling transformers of the kind in which an outer helical winding and an insulation barrier nested therein form an axially extending annular passage for cooling-fluid flow. In one form of the invention a tubular shroud is positioned about the helical winding to define an axially extending annular chamber for cooling-fluid flow. The chamber has a width in the range of from about 4 to 25 times that of the axially extending passage. Two baffles extend inward from the shroud to define with the helical winding two annular flow channels having hydraulic diameters smaller than that of the chamber. The inlet to the chamber is designed with a hydraulic diameter approximating that of the coolant-entrance end of the above-mentioned annular passage. As so modified, transformers of the kind described can be operated at significantly higher load levels without exceeding safe operating temperatures.

Abstract: An improved apparatus is provided to cool the flux shields of dynamoelectric machines. In one embodiment of this invention, cooling fins are attached to a flux shield at localized areas of heating of the flux shield referred to as hot spots to reduce the temperatures there to acceptable levels. These fins may be provided with a tapered portion which minimizes the fluid losses associated with the flow of cooling gas over the fins. In another embodiment of the present invention, an annular rim, bored to provide cooling gas passages therethrough, is fixed to the flux shield along an inner portion thereof, to effect the transfer of heat from the flux shield to a flow of the cooling gas through the passages. Finally, in a third embodiment of the present invention, an electrically non-conducting annular baffle is disposed around the flux shield adjacent an inner surface thereof to direct a flow of cooling gas across the inner surface of the flux shield thereby cooling the same.

Abstract: An induction cooking appliance for operation at ultrasonic frequencies and including an improved work coil coupled in a solid state inverter circuit to generate an ultrasonic frequency magnetic field which is coupled to a metallic utensil through a non-electrically conductive cooktop. Coil losses are minimized, and coupling efficiency increased by forming the coil of solid conductor wound in a loose spiral, with the pitch of the spiral being related to the radial thickness of the conductor by a factor falling within a predetermined range. The loosely wound coil is held in a grooved dielectric support which insures proper turn spacing for the life of the appliance and which is immune to high temperatures which may be developed during operation of the coil. Means are provided under the support to minimize stray radiation and limit inductance variations which might otherwise result from nearby metallic members.

Abstract: In electrical equipment having windings with radial channels therethrough, which may be formed by spacing coils apart in the axial direction, and which coils are spaced from the inner and outer insulating cylinders, there are provided alternately along the length of the device guide members which have head portions which fill the spaces between the coils and the insulating cylinders and fit against the insulating cylinders, together with downwardly projecting wedge-like tongues which provide spaces of gradual decreasing cross-section, the tongues over-lapping at least two of the passages so that the flowing coolant is distributed between the passages as equally as possible.

Abstract: A vaporization cooled transformer includes an improved liquid distribution system which distributes the dielectric or cooling liquid in a predetermined fashion for liquid film flow over the wall surfaces of vertical cooling ducts with minimal liquid hold-up.

Abstract: A liquid-cooled electrical transformer with a disc or flat coil transformer winding conventionally has vertical cooling ducts at both coil edges for upward flow of coolant by natural circulation. Higher winding ratings are obtained by mounting staggered partial flow barrier inserts in the vertical cooling ducts to force a small radial flow of coolant between the individual coils for improved heat transfer without excessively reducing the coolant flow rate.

Abstract: A multi-layer winding comprising cylindrically-wound conductors and having different diameters are arranged concentrically. The layer windings are connected in series from inside to outside. Each layer winding has a layer insulator arranged on the inside thereof with a flange. Inwardly of the layer insulator and adjacent to the next inward layer winding is formed an oil gap functioning as a cooling-oil path. That oil-gap-equivalent part at and in the vicinity of the ends of the layer winding where the potential is maximum between adjacent layer windings is larger than the other parts thereof. This construction reduces the intensity of the electric field at the ends of each layer winding and eliminates partial discharge, thus improving the reliability and rendering the multi-layer winding compact and light in weight as a whole.

Abstract: Current distribution between parallel-connected, coaxial, helical coils is determined by rectangular conductors having a selected radial thickness and longitudinal widths so that each coil carries the desired current. First adjacent ends of all of the coils are connected together at the same physical location by a first common terminal, and second adjacent ends of all of the coils are connected together at the same physical location by a second common terminal. The rectangular conductors facilitate winding and supporting coaxial coils, and different conductor widths and winding pitches permit each coil to be designed so that it has the desired characteristics and importantly so that it carries the desired current.

Abstract: A porous, electrical insulating adhesive substrate is made by (A) electrostatically coating a flexible sheet material with heat reactive adhesive resin particles, having an average particle size of between about 1 micron to 2,000 microns, the adhesive particles are applied in a predetermined pattern on the sheet covering from about 10 percent to 90 percent of the sheet material area, the area between the resin pattern not being patterned and then (B) heating the patterened coated sheet material between about 65.degree.C to 250.degree.C, forming a discontinuous, 0.25 mil to 25 mil (0.006 mm to 0.

Abstract: A magnetic field drive coil arrangement includes a hollow rectangular coil form having a pair of rectangular openings at opposite lengthwise ends of the form, a first coil wound around the coil form such that the turns of the coil in the central region of the coil form are parallel to the longitudinal axis and a second coil wound over the central portion of the first coil. The portion of the turns of the first coil which are between the access openings and the second coil curve away from the longitudinal axis of the coil form so as not to interfere with the access openings. The access openings facilitate the access to the cylindrical domain memories disposed within the coil form and the flow of a coolant through the form. Advantageous methods of fabricating the coil arrangement are described.

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.

Abstract: Distribution transformer having inner and outer low-voltage winding sections and a high-voltage winding section disposed therebetween. Insulation structures separate the various winding sections and include a relatively small thickness of solid insulating material and a liquid dielectric duct. Some of the solid insulating material is axially extended to increase the creep resistance of the winding. The insulation structures are also void of any metallic electrostatic shield or any other member which would hamper adequate processing of the insulation structure during the construction of the transformer.

Abstract: In an oil-filled apparatus, such as a transformer, having parts between which pressure is to be applied, such pressure is produced by providing between the parts bodies of an elastomer which absorbs the oil and expands as a result of such absorption. Such bodies may be used between windings and cores or as a seal between a transformer lid and a flange.

Abstract: .[.A package for holding a plurality of encapsulated electrical components comprising a cylindrical case having a lengthwise slot through which the leads of the components extend, and an adjustable mounting means carried by the case which is offset from the lengthwise slot..]..Iadd.In a telephone communication system there is provided a plurality of individual encapsulated electrical components for improving the voice transmission which are held in electrical disconnected relationship and in an end-to-end relation in an elongated hollow, flexible elastic case having a continuous slot with the width of the slot and the elasticity of the flexible case cooperating to allow a selected electrical component to be manually removed through the slot. An electrical component assembly which is capable of being disposed within the case and a mounting bar for mounting a plurality of the electrical component packages are also disclosed. .Iaddend.