Abstract: Disclosed is a floating gate neuron MOS transistor that may be incorporated into devices such as low voltage silicon control rectifiers for protection of internal circuits against electrostatic discharge. The transistor includes two or more input gates capacitively coupled to the floating gate. By adjusting the coupling ratio of the input gates, it is possible to control the transistor drain turn-on voltage very precisely and thereby turn on the rectifier without relying on avalanche breakdown of the transistor.

Abstract: A chip type aluminum electrolytic capacitor (1) has a capacitor element (2) impregnated with an electrolytic solution, a cylindrical case (3) for containing the capacitor element (2), a sealing member (4) for sealing the cylindrical case (3), and an insulating board (5) having a mounting surface (5c) to be fixed to an electronic circuit board; and vapor pressure of the electrolytic solution is regulated to a predetermined value to prevent deformations of the cylindrical case (3) and the sealing member (4).

Abstract: A solid electrolytic capacitor has a molded casing containing therein a capacitor element, a first lead member connected to its anode and a second lead member connected to its cathode through a fuse. The second lead member is designed such that a relatively large capacitor element can be contained inside the casing although it must also have a large enough hole to allow a portion of the casing to penetrate therethrough to fasten it to the casing.

Abstract: A capacitor has a capacitor element including a metallized film and a case for hermetically containing the capacitor element. The capacitor element has a protective mechanism for protecting it against insulation breakdown at overvoltage or thermorunaway. The capacitor also has a safety device for keeping the capacitor safe at high internal pressure due to heating. Thus, the protective mechanism and the safety device operate surely, the capacitor is protected under various severe conditions, and the life of the capacitor becomes longer.

Abstract: A capacitorized chassis, frame, or structure for use by an electric entity made up of sectionalized, interchangeable capacitors that conform to a size, shape and weight of that entity. Connected capacitors have a long, positive plate folded into multiple, involuted flat layers that are superimposed on both sides with pressurized argon gas, a dielectric and a long negative plate folded with similar layers and also superimposed with pressurized argon gas.

Abstract: A dielectric absorption compensation circuit (300) provides an equivalent and opposite impedance to a parasitic impedance of an external capacitive load (414). The dielectric absorption compensation circuit (300) reduces lock time in a phase lock loop circuit (400) which uses an RC filter (410) including the capacitive load (414).

Abstract: A device and method for insulating a dry film capacitor includes a pair of electrically non-conductive discs having knurled protrusions extending therefrom. The dry film capacitor includes a core for receivingly engaging the protrusions to thereby secure the discs to the capacitor. The discs are dimensioned such that the discs when placed on the interior surface of a ballast can serve as supports for the capacitor by raising the capacitor away from contact with the ballast can. In connecting the discs to the capacitor, the protrusions are twistingly pushed into the core of the capacitor.

Abstract: A capacitor including a cylindrical housing having a chamber for receiving an insulating material, the cylindrical housing being formed with a U-shaped slot on an upper end and a recess under the U-shaped slot, the recess being larger than the U-shaped slot thereby forming two shoulders, and an engaging member having a base having a U-shaped flange extending outwardly and slopingly from a circumference and a threaded bolt extending upwardly from a top, the engaging member being adapted to fit into the recess with the U-shaped flange fitted between the shoulders and the threaded bolt extending upwardly out of the U-shaped slot.

Abstract: Material for winding high voltage capacitors is prepared by evaporating polyfunctional acrylate monomer having a molecular rate in the range of from 150 to 600 and condensing the acrylate as a monomer film on a dielectric substrate. The acrylate is polymerized by irradiation by ultraviolet or electrons. Sometimes both faces of the dielectric are coated to protect the thermoplastic dielectric from swelling when exposed to dielectric liquid. The metallized layer provides an electrode of the capacitor. A polymerized acrylate layer may be applied over the metal layer. Electrical contact can be made to the metal layer by Schooping even though the metallized layer is covered by a layer of acrylate. Low oxygen permeability polypropylene, polyester or nylon sheet has a layer of crosslinked acrylate and an oxygen barrier layer formed of silicon oxide, aluminum oxide or metal. Adhesion is enhanced by plasma or corona treatment of a surface immediately before deposition.

Abstract: A hermetically sealed capacitor including a metal tape (e.g, copper) having an adhesive on one side and being folded and wrapped around the capacitor winding in the manner that a Christmas package is wrapped. After wrapping, the tape initially extends beyond both ends of the capacitor. The tape is then folded at one end of the capacitor. The seam of the tape overlapping itself (along the length of the capacitor) and the fold at the one end of the capacitor are each soldered. On the other end of the capacitor, a ceramic header having a through hole (for one of the capacitor leads) is positioned. The tape extends beyond the ceramic header and is folded so as to make contact with the ceramic header. The seam between the metal tape and the ceramic piece is then soldered. In this way, a small, hermetically sealed capacitor is obtained.

Abstract: A polymer-encased capacitor with a nicked-wire interruption system has a capacitor element assembled onto a longitudinally-telescoping support member and installed in a polymer case so that one longitudinal end of the assembly rests on a surface of the case and the other longitudinal end is adjacent a retainer disk spaced at a predetermined longitudinal dimension between a point on the case and the cover of the case. A nicked-wire is attached to the capacitor element, protrudes through the retainer disk and is attached to an electrical terminal on a movable portion of the cover responsive to overpressure conditions in the case.

Abstract: The invention provides an electric energy accumulator of capacitive type, with high capacity, characterized in that it comprises a plurality of electrochemical capacitors (C) connected in parallel and disposed inside the same case (B) comprising an overvoltage detection circuit (DS) and a circuit (CD) for controlling discharge of the capacitors into heat dissipation shunts (S) integrated in the case (B).

Abstract: A capacitor in which the interruption mechanism includes an actuator that moves in response to a predetermined physical condition to cause electrical disconnection of the capacitive element, and in which the actuator has a range of motion through a limited number of stable positions and is mechanically pre-biased to move toward one of the stable positions when not already in one of the stable positions. In another aspect the capacitor housing includes an integral rim around the terminals that is filled with dielectric resin to insulate the terminals from the space surrounding the capacitor housing.

Abstract: An electrical device includes an electrical element; a container housing the electrical element; a rigid electrical terminal extending through a hole in a wall of the container; a bridge between the wall and the element, the bridge having an opening offset from an axis lying normal to the wall at the hole and the opening being aligned with a portion of the terminal; and an electrical connection made between the element and the terminal via the bridge opening, the connection being configured so that bulging of the wall causes the connection to break. Preferably, the container is a capacitor, and the electrical connection between the element and the terminal includes multiple separation points.

Abstract: An electrical conductor connected between a capacitor section and a terminal of a capacitor is disconnected with the aid of an actuator having at least two hinged-together sections that move relative to one another in response to distortion of the capacitor's casing.

Abstract: A capacitor for a AC applications is manufactured from zinc alloy metallized polypropylene sheet material. The sheet material is wound into one or sections having a roll-shape, which sections are placed within a metal container and provided with electrical terminals for connecting to the exterior of the container. The metal container is then filled with a potting compound comprising 80%-90% blown asphalt and 10%-20% wax additive. When the potting compound sets, the capacitor sections are sealed therein so as to be protected from air, moisture and thermal and electrical shock. The container is then covered with a top which includes a pressure interrupter, and it is sealed. This capacitor exhibits improved resistance to deterioration due to environmental factors over long periods of time, and it permits operation with higher voltages than was previously possible.

Abstract: A capacitor assembly including a metallized dielectric capacitor and an inductor as integral parts. The inductor, which suppresses current surges which would destroy thin metallic layer electrodes of the capacitor, includes a conductive coil in series with the capacitor and a ferromagnetic core disposed in available space in a container for the capacitor.

Abstract: A capacitor which includes a housing, at least one device for storing and releasing electrical energy, at least two terminals and adsorbent material for adsorbing at least a portion of the contaminants in the housing to provide capacitors with a significantly longer useful life and less failure.

Abstract: A capacitor is composed of an external casing with an internal polyurethane encapsulation containing a polypropylene layered metallized film type capacitor element. Inside the casing is a component in the form of a frangible substrate having at least one conductive track thereon. The track establishes connection between a terminal on the casing and the capacitor element. The substrate is either mounted directly to the inside of the casing or is contained in a cartridge. The substrate is of brittle nature and distorts should pressure increase in the casing to shatter to break the track and isolate the terminal from the capacitor element.

Abstract: A resinated capacitive-body capacitor with interspace and explosion-preventing device having an encasing shell for a capacitive body which is englobed in a hardened resin and further including a cap with a pressure activable disconnecting device fuse enclosed in the respective encasing plastic shell, being of a soft spongy interspace material, between said encasing shell and said hardened resin with capacitive body provided.

Abstract: The disclosed capacitors include an assembly of a wound capacitor section having at least one metallized electrode, being prone to develop explosive pressure when a fault occurs, and an interrupter in series with the capacitor section. The interrupter cooperates mechanically with the wound section to rupture the interrupter in response to fault-induced internal pressure, the whole being contained in an enclosure.

Abstract: An electrical capacitor composed of: a coil composed of metal coatings and having opposed end faces; contact layers applied to the end faces of the coil; a casing enclosing the coil; and a conductor structure including a tearable interrupter conductor connecting the contact layers to external capacitor terminals, the conductor being disposed to rupture, and thus break the connection between the capacitor and one external terminal, in response to enlargement of the coil due to a fault, and the casing being disposed directly against the coil and adhering to the interrupter conductor in such a manner that the casing ruptures in response to such enlargement of the coil and promotes rupture of the interrupter conductor.

Abstract: A safety valve for a capacitor includes a weakened portion of the capacitor casing in the form of six identical concave grooves adjoining one another at the center of the base and forming a pattern of three "V" formations so that the grooves rupture upon the appearance of an excessive pressure build-up within the capacitor casing.

Abstract: A capacitor is electrically disabled to limit internal pressure buildup by attaching its electrical terminals to a first wall portion that bulges in a predetermined direction under internal pressure, providing electrical connections between the terminals and the capacitive element, and associating with a second wall portion (that does not move in the predetermined direction under internal pressure) a disconnect means such that when the first wall portion bulges, the terminals exert a force in the predetermined direction on the connections, which are then severed by a resisting force exerted by the disconnect means.In another aspect, reconnection is prevented by having each electrical terminal connected by a conductor via a predefined pathway to the capacitive element, and providing means for blocking the pathway following disconnection.

Abstract: A pressure sensitive fault interrupter for a dry metalized AC motor run capacitor having a dome-shaped diaphragm secured to one electrode at the base of a capacitor roll such that a rise in pressure within said roll will cause the dome of the diaphragm to be depressed, thereby breaking the electrical contact of one electrode, thus isolating the capacitor from its power supply.

Abstract: A multisection AC capacitor wherein each capacitor section has a pressure sensitive fault interrupter having a dome-shaped diaphragm mechanically and electrically secured to a contact bridge at the base of the capacitor roll, all capacitor sections within said case being electrically connected in parallel, such that a rising pressure within one section will cause the dome of the diaphragm of the faulty capacitor to be depressed, thereby breaking the electrical contact of one electrode, thus isolating the faulty capacitor from the power supply, while permitting the remaining capacitors in the multisection unit to function normally.

Abstract: A casing for protecting electronic components or circuits against ionizing radiations, comprising an alternance of layers of materials having low and high atomic charge numbers, forming a multi-layer capacitor, and a base comprising an alternation of the same type.

Abstract: A multisection AC capacitor having a pressure sensitive fault interrupter, said capacitor being a dry metallized AC motor start and motor run capacitor, said fault interrupter having a dome shaped diaphragm secured to one electrode at the base of one capacitor section within said unit and one or more core connectors spatially separating and securing said capacitor sections within a sleeve such that the multisection stacked capacitor may be potted within a case and gases resulting from a build up of pressure within said capacitor will be directed to its core and downward therefrom to exert pressure, causing the dome of the diaphragm to be depressed, thereby breaking the electrical contact of one electrode, thus isolating the capacitor from its power supply.

Abstract: A pressure sensitive fault interrupter for an oil impregnated metallized AC motor start and motor run capacitor having a dome-shaped diaphragm secured to one contact electrode bridge at the base of the capacitor roll such that a rise in pressure within said roll will cause the dome of said diaphragm to be depressed, thereby breaking electrical contact of one electrode, thus isolating the capacitor from its power supply.

Abstract: A metallized capacitor is formed by winding at least two thin metallized dielectric films into a cylinder, the ends of which are sprayed or metallized and connected to externally mounted terminals. A protective interrupter is provided by connecting a very thin electrically conductive strip to one of the metallized ends and running the conductive strip over the surface of the outside metallized film to one of the externally mounted terminals. The capacitor so formed is embedded in heat cured epoxy so that the strip is integrated within the rigid epoxy case. Accordingly, the strip will tear or separate on any swelling or cracking of the epoxy case due to a faulty capacitor and thereby interrupt the power supply. The conductive strip may be scored at intervals along the length thereof in order to enhance its shearing or tearing ability.

Abstract: A dry capacitor interrupter employs a sealed container spaced about a dry capacitor to contain gas emitted upon failure of the dry capacitor and to thereby permit gas pressure to develop within the container regardless of the location on the dry capacitor from which the gas is emitted. A deformable cover on the container is deformed outward by the gas pressure to thereby break a connection between a terminal stud and a tab within the container. The breakage of the connection effectively removes the dry capacitor from electrical connection to external circuits.

Abstract: A dry metallized film capacitor which includes an interrupter is potted with a plasticized urethane containing unreacted isocyanate groups. Sufficient plasticizer is used so that the potting material is soft enough to permit functioning of the interrupter and is also viscous enough to remain in place to prevent spillage under leakage or rupture conditions.

Abstract: An electric capacitor includes a housing having an inwardly-arched, substantially spherical, dome-shaped bottom membrane, a capacitor winding disposed in the housing, an excessive-pressure protection safety device disposed in the housing in vicinity of the bottom membrane, a central core tube disposed in the winding, and an insulating disc disposed between the winding and the bottom membrane, the disc having at least two parts and including an extension protruding into the central core tube.

Abstract: A safety device for venting excess pressure in a wet capacitor container (1) includes a lift valve (4) disposed in the wall or lid of the container, the body of the valve (4) being disposed with the aid of at least one resilient member (6) for being pressed against the valve seat (7) against the action of the pressure prevailing in the container (1), the member (6) being implemented as a resilient tongue (6) on a washer-like spring (8), where the tongue has been bent over in a direction towards the valve body (5). The spring (8) is also provided with a plurality of tongues (9) bent over in a direction away from the valve body (5) for retaining the spring (8) in the container.

Abstract: An electrical device has an electrical component, a housing having an open end for receiving the electrical component, a closure member for sealing the open end of the housing, the housing including an inner wall and a shoulder on the inner wall providing a seat for the closure member, and a retainer for retaining the closure member in sealing engagement with the seat. The retainer includes a plurality of radially outwardly extending ears for gripping the inner wall of the housing. A plurality of radially inwardly projecting lugs are provided on the inner wall and each lug has an axially inwardly facing surface for engaging the ears to maintain the closure member in sealing engagement with the seat.

Abstract: A capacitor body that is carried in a container is anchored within the container by a cup-shaped member that is disposed at opposite ends of the capacitor body. Each cup-shaped member includes a spike which engages the ends of the capacitor body to hold it in place.In a preferred embodiment, the spike is cylindrical and engages a hollow core having a bore that is hexagonal in cross-section.

Abstract: The capacitor includes, between an anode and a cathode, a separator formed by at least one porous polymer film and at least one absorbent paper sheet impregnated with an electrolyte, the polymer film being disposed against the anode. The preferred polymer materials are polypropylene and polyester (especially polybutylene terephthalate).

Abstract: A unique design and method of construction is presented for a tank-like structure which houses an electrical component immersed within a dielectric fluid. The tank is formed by a generally cup-shaped enclosure and a cover. In one embodiment the cover carries a means for electrically connecting the interior of the tank with its exterior. The cover and the enclosure are joined by an overlapping edge means. By overlapping the marginal portions of the cover and the enclosure, such that the leading edges are disposed in the opposite direction, a joint is formed which is less likely to rupture than one formed by overlapping the marginal portions with the leading edges disposed in the same direction.

Abstract: A capacitor element is enclosed within a laminated film including at least a plastic film. The laminated film portion surrounding the capacitor element is heat sealed to form an enclosure structure sealing the capacitor element. The sealing width of the sealed portion formed by heat sealing is selected to be within the range of 1 to 20 mm. The thickness of the inner film of the laminated film opposing the capacitor element is selected to be within the range of 70 to 200 .mu.m. A capacitor of improved life time is obtained.

Abstract: A terminal-cover assembly for a multisection capacitor has three terminal-bushing assemblies mounted in a round metal cover so as to meet the minimum spacing requirements between terminals and between the terminals and the edge of the cover. The terminal-bushing assemblies are mounted in the cover in a triangular array, and the bushings have an irregular pentagonal shape. A four-bladed terminal in the shape of an irregular octagon is provided for the assembly.

Abstract: A low inductance electrolytic capacitor utilizes a stripline on which the capacitor section is wound in extended foil fashion. Each piece of the metal stripline has a projection spaced from one end. The pieces are assembled with an insulating strip between them with the projections at opposite ends and opposite sides of the stripline. The foil extensions are welded directly to the stripline and the stripline to the capacitor terminals.

Abstract: In elliptical shaped insulated high voltage ceramic capacitors, subjected to higher heat and temperature, stresses are formed which causes gaps between the insulation and ceramic capacitor. To solve this and other problems a hollow elliptical shaped plastic cover is positioned below the capacitor ground conductor. The cover has a bridge which separates the cross section of the cover into two substantially circular areas an insulator is injected into the cover which also covers the capacitor.

Abstract: A protective assembly is provided for a power capacitor having three electrical terminals extending outwardly from the top of the capacitor. The protective assembly comprises a mounting plate constructed of an electrical insulating material having three holes formed through it which register with the electrical terminals of the capacitor. The mounting plate is positioned over the capacitor terminals so that the lower side of the mounting plate faces the top of the capacitor while the electrical terminals protrude outwardly from the upper side of the mounting plate. Bleed resistors are connected between each pair of the capacitor terminals on the upper side of the plate. In addition, a fuse assembly is attached to the upper side of the mounting plate and has at least one and preferably three fuse holders. Each capacitor terminal is connected to one of the fuse holders on the fuse assembly while the other terminal for each fuse holder forms the power connection to the electrical load.

Abstract: A capacitive system for sensing the level of material includes a conductive member electrically connected to ground potential, a probe including a sensing element arranged to establish a capacitance between the sensing element and conductive member which is determined by the level of the material and a shielding element interposed between the conductive member and the sensing element to form an electrically neutral zone therebetween to thereby reduce the effect of a conductive buildup of the material on the probe on the capacitance between the conductive member and the sensing element, and a first circuit electrically connected to the sensing and shielding elements for applying generally the same electrical potential to both the sensing and shielding elements, the first circuit having an output which varies in response to a change in the capacitance between the conductive member and the sensing element.

Abstract: An electrical device includes a housing having an open end for receiving an electrical component, a rigid member for sealing the open end to contain the electrical component within the housing, and an apparatus positioned between the electrical component and the rigid sealing member for anchoring the electrical component within the housing. The anchoring apparatus includes a center section, at least two angularly spaced arms extending radially outward from the center section, a locator extending axially outward from the center section for engaging the electrical component, posts extending axially outward from each of the arms for engaging the rigid sealing member to restrict movement of the center section and the arms relative to the rigid sealing member, and a plurality of spaced fingers extending axially outward from the arms for engaging the electrical component.

Abstract: An electrical device includes a housing having an open end for receiving an electrical component, the housing including an inwardly extending flange located in proximity to the open end and the flange having surface area facing into the housing and away from the open end, anchoring structure adapted for positioning between the electrical component and the open end, the anchoring structure including a hub and at least two arms extending radially outwardly from the hub, the arms including radially extending ends having an effective distance therebetween which is larger than the size of the open end of the housing, and an abutment for abutting the hub against the electrical component, the arms being adapted for concave resilient deflection thereof into the housing for creating a biasing force against the electrical component and for reducing the effective distance between the radially extending ends for permitting installation of the anchoring structure into the open end and past the flange for engaging the radi

Abstract: A daul AC motor-run capacitor has a pair of oval plastic end caps to hold round would capacitor sections in place in an oval can. Each cap has upstanding pins to engage the ends of each capacitor section and hold it firmly in place. The upper cap has at least one slot therein for the passage of an electrode tab from the wound sections for connection to at least one terminal. The bottoms of the sections are electrically connected and provided with a common electrode tab. When the can and cover are metal, this common tab passes through an insulative sleeve along the length of the sections for connection to its terminal.

Abstract: AC life and corona characteristics of a polypropylene-aluminum foil or a metallized film wound capacitor are improved by coating at least the ends of the capacitor with a partially cured urethane containing unreacted isocyanate groups.

Abstract: A capacitor assembly and method of manufacture is disclosed, the capacitor being of the type including a capacitor winding received into a capacitor housing cavity, with a pair of terminal contact straps each positioned in contact with an opposite face of the capacitor winding and along the upper surface of the housing adjacent the cavity. A cap overlying the capacitor winding, as well as the terminal, is provided by an injection molding of material by means including a molding die which compresses one of the contact straps which normally upwardly extend to enable positioning of the mold top plates over the housing recess during the molding process. Spring back of the contact allows the contact to return to its original position.

Abstract: A pressure-sensing transducer comprised of a diaphragm sandwiched between two discs having substantially non-moving walls forming two adjacent chambers. Concentric electrodes on opposite faces of one of the chambers form a pair of capacitors. Ports are provided in the discs in communication with the chambers for application of fluid pressures. The transducer assembly is mounted in a housing and isolated from shock by fluid tubing supports attaching the ports on opposite sides of the assembly to the housing. The transducer can be formed of a plurality of discs and diaphragms in a sandwiched relationship to produce a family of transducers.