Abstract: A coil has a winding that is coated with an epoxy resin in at least some areas, wherein a ratio of a compressive strength of the epoxy resin to the tensile strength thereof at room temperature ranges between 2 and 5, the modulus of elasticity at room temperature is at least 5000 MPa, and at a glass transition temperature of the epoxy resin, the modulus of elasticity and the tensile strength have values amounting to at least 30% of the values at room temperature.

Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric layers which are stacked and internal electrode layers which are stacked, and external electrodes, each connected to the internal electrode layers. The external electrodes each include a conductive resin layer and a plated layer on the conductive resin layer. The conductive resin layer includes a resin portion, conductive fillers dispersed in the resin portion, and metal particles dispersed unevenly in a distribution differing from that of the conductive fillers in the conductive resin layer. An abundance ratio of the metal particles to the resin portion is higher on a side of the plated layer of the conductive resin layer than on a side of the conductive resin layer close to the multilayer body.

Abstract: The present invention relates to a method and apparatus for simulating the vagus nerve. The apparatus for stimulating the vagus nerve includes: a magnetic field generation unit generating a magnetic field in a form of pulse, which stimulates a preset area including the vagus nerve of a user by an electric current applied to a coil; a power supply unit applying the electric current to the coil; and a control unit controlling an intensity of the electric current applied to the coil, and a pulse width and a peak interval of the magnetic field, wherein the magnetic field has a peak intensity that is set using a biomagnetic signal of the use. According to the present invention, the body function may be improved using the pulsed magnetic field with the intensity close to the biomagnetic signals.

Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric layers which are stacked and internal electrode layers which are stacked, and external electrodes, each connected to the internal electrode layers. The external electrodes each include a conductive resin layer and a plated layer on the conductive resin layer. The conductive resin layer includes a resin portion, conductive fillers dispersed in the resin portion, and metal particles dispersed unevenly in a distribution differing from that of the conductive fillers in the conductive resin layer. An abundance ratio of the metal particles to the resin portion is higher on a side of the plated layer of the conductive resin layer than on a side of the conductive resin layer close to the multilayer body.

Abstract: A multilayer capacitor and a method of manufacturing includes a conductive resin layer of an external electrode disposed on a first electrode layer. The conductive resin layer includes a conductive connecting part and an intermetallic compound contacting the first electrode layer and the conductive connecting part. The conductive connecting part contacts a plurality of metal particles and a second electrode layer, such that the equivalent series resistance (ESR) of the multilayer capacitor is decreased and warpage strength of the multilayer capacitor is improved.

Abstract: A multilayer capacitor may have a decreased equivalent series resistance (ESR) and improved warpage strength and reliability with conductive resin layers of external electrodes on surfaces where internal electrodes are exposed from a body, intermetallic compounds are in contact with conductive connecting portions of the conductive resin layers and the internal electrodes, and conductive connecting portions are in contact with a plurality of metal particles and second electrode layers.

Abstract: In a spark plug ignition assembly for a spark plug, an ignition coil assembly has a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding. A spark plug connecting member is provided for connecting the coil assembly to the spark plug. At least one of the first and second core portions has a slot therein with a magnet located in the slot.

Abstract: An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define straight or angled cooling-fluid passageways through the lamination stack. Gaps between the adjacent laminations are sealed by injecting a heat-cured sealant into the passageways, expelling excess sealant, and heat-curing the lamination stack. Manifold members adjoin opposite ends of the lamination stack, and each is configured with one or more cavities to act as a manifold to adjacent passageway ends. Complex manifold arrangements can create bidirectional flow in a variety of patterns.

Abstract: An inductive power supply system for providing power to one or more inductively powered devices. The system includes a mechanism for varying the physical distance or the respective orientation between the primary coil and secondary coil to control the amount of power supplied to the inductively powered device. In another aspect, the present invention is directed to an inductive power supply system having a primary coil and a receptacle disposed within the magnetic field generated by the primary coil. One or more inductively powered devices are placed randomly within the receptacle to receive power inductively from the primary coil. The power supply circuit includes circuitry for adjusting the power supplied to the primary coil to optimize operation based on the position and cumulative characteristics of the inductively powered device(s) disposed within the receptacle.

Abstract: The invention relates to a rotary transmitter for example for use in machine tools with adjusting tools. The rotary transmitter comprises a stator part (18) and a rotor part (26), each having a respective stator core part (72) and a rotor core part (74), which are separated from one another at mutually facing ends via an air gap, and each having at least one respective power winding (76, 78), which is wound on the stator core part and the rotor core part, in order to transmit power using the transformer principle, and having respective stator and rotor coupling turns (80?, 80?, 82?, 82?), which are associated with one another in pairs, for inductive data transmission. One aim of the invention is to transmit data without interference. A further aim is a low maintenance requirement.

Abstract: System for contactless energy transmission includes a primary side winding and a secondary side winding that is rotatable relative to the primary side winding, a coil core being provided on the primary side winding, whose sectional view in at least one sectional plane containing the axis of rotation is formed as a U shape or C shape around the winding region of the primary side winding.

Abstract: A method is disclosed for producing a pole face of a metal closing elements of a solenoid, especially for electromechanical switchgear. In at least one embodiment, the method includes machining the surface of a crude stamped part of the closing element to give the pole face. A corresponding armature, yoke, solenoid and switchgear are also disclosed.

Abstract: An electronics support apparatus for rotating electronics is provided that eliminates the need for electrical contact brushes and/or reduces the number of inductive power coupling coil pairs required to provide power to the rotating electronics. With the apparatus, a single inductive power coupling coil pair is utilized in which the coils are oriented at approximately 90 degrees, i.e. at a right angle, to each other, e.g., the “outer” coil (secondary transformer coil) is oriented approximately 90 degrees to the “inner” coil (primary transformer coil). A transformer core, or “elbow core,” having an approximately 90 degree bend is provided for coupling the magnetic energy of the primary transformer coil with the secondary transformer coil, thus imparting or coupling energy simultaneously through 2 axes of motion.

Abstract: Novel applications of nanocoil technology and novel methods of fabricating nanocoils for use in such applications and others. Such applications include inductors or traveling wave tubes fabricated from spiral nanocoils. Such applications includes inductors or traveling wave tubes fabricated from a method for fabricating nanocoils with a desired pitch. Such a method includes determining a desired pitch for fabricated nanocoil, selecting coiling arm orientation in which coiling arm orientation is arm angle between coiling arm an crystalline orientation of underlying substrate, whereby coiling arm orientation affects pitch of fabricated nanocoil, patterning coiling arm structure with selected coiling arm orientation, and, releasing coiling arm, whereby fabricated nanocoil is formed.

Abstract: A method of manufacturing a dry-type, resin-encapsulated transformer coil that includes forming a plurality of conductive layers and positioning a plurality of pre-formed plastic cooling ducts so as to be disposed between the conductive layers.

Abstract: An inductive power supply system for providing power to one or more inductively powered devices. The system includes a mechanism for varying the physical distance or the respective orientation between the primary coil and secondary coil to control the amount of power supplied to the inductively powered device. In another aspect, the present invention is directed to an inductive power supply system having a primary coil and a receptacle disposed within the magnetic field generated by the primary coil. One or more inductively powered devices are placed randomly within the receptacle to receive power inductively from the primary coil. The power supply circuit includes circuitry for adjusting the power supplied to the primary coil to optimize operation based on the position and cumulative characteristics of the inductively powered device(s) disposed within the receptacle.

Abstract: An electromagnetic component is formed from a pre-form comprising layers of soft magnetic metal ribbon. Adhesive is applied to permeate the pre-form and is then cured. The bonded pre-form is placed within a milling assembly that supports and constrains the ribbon layers during a milling operation used to process the pre-form into an electromagnetic component shape. Optionally, the shape is thermally processed. The resulting electromechanical component has attractive soft magnetic properties, including low core loss, that render it useful as a component in electric motors and generators and static inductive devices operable at high excitation frequencies.

Abstract: A method for building a device having fluidic and electrical functions includes the steps of: mounting a building part with fluidic and electrical functions on a substrate that is provided with a fluidic circuit; fluidically connecting the building part with the substrate; electrically connecting the building part with the substrate; and mechanically connecting the building part with the substrate. Flip-chip technology is utilized and a seal is made by of a gasket. With such a method, a hybrid microfluidic system can be built in which materials and processes for realizing the various connections (fluidic and mechanical and electrical) can be selected in principle independently of each other so the individual processes can be optimized independently of each other in a large measure. With the application of flip-chip technology, great accuracy in the positioning of the building parts can be achieved.

Abstract: An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define straight or angled cooling-fluid passageways through the lamination stack. Gaps between the adjacent laminations are sealed by injecting a heat-cured sealant into the passageways, expelling excess sealant, and heat-curing the lamination stack. Manifold members adjoin opposite ends of the lamination stack, and each is configured with one or more cavities to act as a manifold to adjacent passageway ends. Complex manifold arrangements can create bidirectional flow in a variety of patterns.

Abstract: A method and apparatus comprises a circuit adapted to be coupled to a power supply which produces a pulsed DC output, and a magnetic field generating coil coupled to the output of the circuit which is effective to produce a time varying magnetic field having a flux density in the range of about 0.0001 to 2.0 gauss at a frequency in the range of about 0 to 45 Hz. The coil is positioned at or near the site on the body of the patient to be treated, or, alternatively, beneath the patient's sleeping surface for a period ranging from about one-half hour to several hours depending upon the method and condition to be treated.

Abstract: A micro-electro mechanical (MEM) switch capable of inductively coupling and decoupling electrical signals is described. The inductive MEM switch consists of a first plurality of coils on a movable platform and a second plurality of coils on a stationary platform or substrate, the coils on the movable platform being above or below those in the stationary substrate. Coupling and decoupling occurs by rotating or by laterally displacing the coils of the movable platform with respect to the coils on the stationary substrate. Diverse arrangements of coils respectively on the movable and stationary substrates allow for a multi-pole and multi-position switching configurations. The MEM switches described eliminate problems of stiction, arcing and welding of the switch contacts. The MEMS switches of the invention can be fabricated using standard CMOS techniques.

Abstract: A capacitive voltage transformers for distribution of the power from 10 kv high potential line, includes a insulating column with a high potential terminal, a ground terminal and capacitors C1 and C2 in series connection. The column is filled with oilless dry filler. The capacitors C1 and C2 formed by a plurality of separated metallized film capacitors respectively in series or in parallel connection. At the tapping point between the capacitors there is a leading-out terminal of the secondary voltage which is connected to an induction transformer L in parallel. The transformer includes a frame with “C” shaped iron cores and windings wound around the cores. There is an over-voltage protector P connected in parallel between the tapping point and ground. A capacitive voltage divider is integrally combined with the transformer to provide a small volume, low cost device with a savings in materials.

Abstract: A position sensor, such as a rotary position sensor, includes the signal-conditioning electronics in the housing. The signal-conditioning electronics are disposed on a printed wiring board, which is assembled with another printed wiring board including the sensor windings to provide a sub-assembly. A mu-metal shield is interposed between the printed wiring boards to prevent magnetic interference. The sub-assembly is disposed in the sensor housing adjacent to an inductor board which turns on a shaft. The inductor board emanates an internally or externally generated excitation signal that induces a signal in the sensor windings. The induced signal represents the rotary position of the inductor board relative to the sensor winding board.

Abstract: A rotary transformer includes a rotor core formed by stacking channel parts to form a required number of channels. Each channel part is formed by stacking two kinds of annular magnetic rings so that two rings having the same outside and inside diameters are placed at both sides of a ring having the same inside diameter as the two rings but a greater outside diameter than the two rings. A stator core is also formed by stacking channel parts to form the required number of channels. The channel part is formed by stacking two kinds of annular magnetic rings so that two rings having the same outside and inside diameters are placed on both sides of a ring having the same inside diameter with the two rings but smaller outside diameter than the two rings. A thin layer of glass can be used to bond the rings of the stator or rotor together.

Abstract: Applicator coil for an electromagnetic therapy apparatus, which has substantially the form of a zone of a sphere deformed into an oval and which is suited above all to rendering a low frequency magnetic alternating field operative on projecting parts of the human or animal body, such as the shoulder region or the face of the person.

Abstract: Tuning elements are provided for use in varying the inductance of the oscillatory circuits of the transmitter and receiver units of garage door actuators operating at ultra-high frequencies. Each oscillatory circuit is a closed loop circuit fabricated on a printed circuit board. The closed loop circuit comprises a pair of printed circuit conductive paths having a fixed capacitor connected across one of the ends thereof and a discrete generally U-shaped wire connected across the other of the ends thereof. The conductive paths and the U-shaped wire comprise the inductor of the oscillatory circuit. By bending the discrete U-shaped wire at its connections with respect to the plane of the printed circuit board, the inductance of the oscillatory circuit in each unit can be adjusted as needed so that they both operate at the same resonant frequency.

Abstract: A coupling mechanism is disclosed for coaxially connecting a pair of connectable components, such as a pair of transducer assemblies each having a stator. A coupling ring is carried by one stator and engageable with the other for drawing the stators together axially in response to relative rotation of the coupling ring. First friction mechanism between the stators prevent relative rotation between the stators after the stators are aligned angularly to align the electrical zeros thereof. Second friction mechanism of lesser coefficient of friction between the coupling ring and the one stator permit relative rotation therebetween whereby the stators can be finally coupled by further rotation of the coupling member while the first friction means maintains the stators in zero electrical alignment. Subsequently, locking washers are fastened between the coupling ring and stators to permanently lock the stators in relative aligned position.

Abstract: A rotary transformer such as for use in a torque-meter structure arranged to have reduced cross talk between the excitation and signal transformer portions, and to have improved durability. In the illustrated embodiment, the air gaps of the transformer section are disposed outboard relative to each other, with the U-shaped cores opening away from each other toward outboard support bearings to provide a circuitous flux path and thereby reduce cross talk between the transformer sections. A two-piece housing structure minimizes dimensional errors in manufacture. The rotor support has a large axial mounting contact for improved accuracy and stability as a result of the short length of the core housing the improved structural arrangement.

Abstract: In an exemplary arrangement a rotatable scanning system comprises an X-ray tube which emits a beam of X-rays which penetrates the layer to be examined, and a radiation receiver which supplies electrical output signals corresponding to the measured radiation intensity. A computer is connected to the radiation receiver for calculating the attenuation values of specific image points of the irradiated body layer from the output signals of the radiation receiver. An inductive transformer is provided for transmitting energy to the X-ray tube, its secondary winding being arranged in a fixed position relative to the X-ray tube and rotating with the scanning system and its primary winding being fixed relative to the stationary part of the unit.

Abstract: An orthogonal coil metal detector with nesting rectangular coils, each comprising a plurality of turns encapsulated in an insulating material and having a layer of electrical resistive material thereon. An encapsulating material in the gap between the coils bonding the coils together. A fixture for supporting the coils in spaced relations and providing for translation and rotation of one coil relative to the other for adjusting the coil position to a minimum coupling condition, and for holding the coils in the adjusted condition during curing.