191results about How to "Reduce resistance loss" patented technology

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

An anode-supported tubular fuel cell stack includes interconnect structures that are oxidation resistant at high temperature, flexible to accommodate thermal expansion stress and to provide strong electrical contact, have low electrical resistance, and are inexpensive and light weight. The interconnect structures may be formed out of metal sheet, which provide improved heat homogeneity throughout the fuel cell stack because of the high thermal conductivity of the metal. The interconnect structures are further shaped to provide resilience or spring-like features to allow movement between the tubular cells. Thus good electrical contact, thermal stress release, and shock absorption are simultaneously achieved.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

An inkjet printhead with planar thermal actuators, with contacts directly deposited onto the CMOS electrodes and suspended heater element, which avoids hotspots caused by vertical or inclined surfaces so that the contacts can be much smaller structures without acceptable increases in resistive losses. Low resistive losses preserves the efficient operation of a suspended heater element and the small contact size is convenient for close nozzle packing on the printhead.

Disclosed herein is an apparatus and method with inductive heating of an electrically conductive workpiece such as a barrel used in molding or extrusion, having a layer of thermal insulation interposed between the induction windings and the workpiece, and using alternating current (AC) at an elevated frequency. Further, variable pitch induction windings may be used to generate a non-uniform and calculated heat input profile, such as to compliment the configuration of a screw for transporting material through the barrel.

A non-isolated resonant converter is provided. The provided non-isolated resonant converter includes a switch circuit, a resonant circuit and a rectifying-filtering circuit. The switch circuit, the resonant circuit and the rectifying-filtering circuit are sequentially connected. The resonant circuit includes an auto-transformer, a capacitor and an inductor, wherein the capacitor and the inductor are connected to the auto-transformer. The configuration of the provided non-isolated resonant converter has small size, low loss and high power density.

The invention discloses supported nickel-iron composite hydroxide oxygen evolution electrode for alkaline water electrolysis and a preparation method for the supported nickel-iron composite hydroxide oxygen evolution electrode. The preparation method comprises the following steps: performing easy physical mixing-rolling on nickel and iron salt solutions, a conductive carrier and a binder to directly obtain a metal salt / carbon film; and performing low-temperature thermal treatment, in-situ precipitation and metal current collector pressing to obtain the supported nickel-iron composite hydroxide oxygen evolution electrode. Through the in-situ precipitation reaction of a metal salt pre-absorbed in the carrier, the dimension of a nickel-iron composite hydroxide catalyst is controlled, and an active site is improved; and secondly, through the in-situ precipitation reaction process, negative ions of a nitrate radical, a sulfate radical and the like are easily inserted into a nickel-iron composite hydroxide lattice, so that the oxygen evolution activity of the electrode is further regulated; moreover, the resistance loss is reduced through an internal structure constructed by the conductive carrier with a high specific surface area. The preparation method for an electrode material has the advantages of being simple, gentle in condition and high in raw material utilization rate, so that the good industrial prospect and a high economic value are shown.

Provided are low-cost, mechanically strong, highly electronically conductive porous substrates and associated structures for solid-state electrochemical devices, techniques for forming these structures, and devices incorporating the structures. The invention provides solid state electrochemical device substrates of novel composition and techniques for forming thin electrode / membrane / electrolyte coatings on the novel or more conventional substrates. In particular, in one embodiment the invention provides techniques for co-firing of device substrate (often an electrode) with an electrolyte or membrane layer to form densified electrolyte / membrane films 5 to 20 microns thick. In another embodiment, densified electrolyte / membrane films 5 to 20 microns thick may be formed on a pre-sintered substrate by a constrained sintering process. In some cases, the substrate may be a porous metal, alloy, or non-nickel cermet incorporating one or more of the transition metals Cr, Fe, Cu and Ag, or alloys thereof.

Photoelectric conversion elements suitable for various applications and related components, and methods associated therewith, are described. A photoelectric conversion element may include a catalyst layer having at least two portions that are spaced from one another, and a current collector having a tip portion that extends toward or within the space between portions of the catalyst layer. A photoelectric conversion element may also include a semiconductor layer disposed a distance of between about 5 microns and about 20 microns away from the catalyst layer.

An inkjet printhead with an array of nozzles, and corresponding actuators for ejecting ink through the nozzles; a plurality of ink inlet apertures in fluid communication with the nozzles, each of the ink inlet apertures having an ink permeable trap and a vent sized so that the surface tension of an ink meniscus across the vent prevents ink leakage; wherein during use, the ink permeable trap directs gas bubbles to the vent where they vent to atmosphere. By trapping the bubbles at the ink inlets and directing them to a small vent, they are effectively removed from the ink flow without any ink leakage. The trap can also double as an inlet priming feature to assist priming the chambers with ink.

An inductor of the present invention includes a plurality of insulating layers being stacked and coil patterns respectively provided on predetermined layers of the insulating layers. The coil patterns are provided on at least two of the insulating layers, and electrically connected to each other. With this arrangement, it is possible to improve Q of the inductor without increasing the size of the inductor.

A light output device comprises a substrate arrangement with a plurality of light source device arrangements integrated into the structure of the substrate arrangement. The plurality of light source device arrangements comprise at least first and second light source devices (4a,4b) which are arranged in anti-parallel. This arrangement mounts at least two light source devices in anti-parallel within an integrated light source structure, so that they can be controlled independently from shared control lines.

An inkjet printhead with multiple nozzles in each ink chamber. By giving the chamber multiple nozzles, each nozzle ejects drops of smaller volume, and having different misdirections. Several small drops misdirected in different directions are less detrimental to print quality than a single relatively large misdirected drop.

An inkjet printhead with an array of ink chambers, each having a nozzle and an actuator for ejecting ink through the nozzle; a plurality of ink inlets in fluid communication with the ink chambers; and, at least one priming feature extending through each of the ink inlets; such that, the surface tension of an ink meniscus at the ink inlet acts to draw the ink out of the inlet and partially along the flow path toward the ink chambers.By introducing a priming feature into the plane of the inlet aperture, the surface tension in the ink meniscus can be redirected to pull the ink along the intend flow path rather than push it back into the inlet.

The invention discloses a quasi-resonance converter synchronous rectification circuit which comprises a power transformer, a secondary power switch circuit, a rectification tube control circuit and a follow current tube control circuit. Detection to the power transformer is used for achieving a no-voltage connecting function and a no-voltage disconnecting function on a rectification tube in the secondary power switch circuit. The quasi-resonance converter synchronous rectification circuit aims at solving the problem that a traditional quasi-resonance converter using diode rectification is large in connecting loss and low in efficiency when used in a large current output applying occasion. The quasi-resonance converter synchronous rectification circuit can achieve no-voltage connecting and no-voltage disconnecting of the rectification tube and a follow current tube under the conditions of load changes, input voltage changes, temperature changes and the like, has the self-adaptation soft switching function, is high in conversion efficiency, contributes to high frequency and miniaturization of a converter, and can be widely applied to manufacturing power sources for the industry, the aviation and the communication.

The invention belongs to the field of solar cells, and provides an electrode of a full-back-contact solar cell and a fabrication method of the electrode. The electrode is characterized in that the electrode comprises first fine grid metal electrodes, second fine grid metal electrodes, first main grid electrodes, second main grid electrodes and first dielectric layers, wherein the first fine grid metal electrodes, the second fine grid metal electrodes, the first main grid electrodes and the second main grid electrodes are positioned on a first main surface of a substrate; the first fine grid metal electrodes and the second fine grid metal electrodes are alternately distributed in an inter-digital shape; the first main grid electrodes and the second main grid electrodes are intersected with the first fine grid metal electrodes and the second fine grid metal electrodes respectively; intersected and overlapped parts between the first main grid electrodes and the second fine grid metal electrodes are isolated from intersected and overlapped parts between second first main grid electrodes and the first fine grid metal electrodes by the dielectric layers; and the first main grid electrodes and the first fine grid metal electrodes are directly contacted with the second main grid electrodes and the second fine grid metal electrodes in intersected and overlapped positions. Compared with the prior art, according to the electrode and the fabrication method, an influence of electrical shading of the electrode is eliminated; line resistance losses of the electrode are reduced; and the performance of a device is improved.

First and second converters are connected in parallel to positive and negative lines, respectively. When a required power is smaller than a reference value, an ECU controls the first and second converters such that one of the first and second converters operates and the other stops. When the required power is equal to or larger than the reference value, the ECU controls the first and second converters such that both the first and second converters operate.

The invention discloses a graphene-based electric conductor and a preparation method thereof. The graphene-based electric conductor comprises a layered structure; the layered structure comprises graphene layers (1) and substrate layers (2) which are alternately arranged; and each graphene layer (1) is compressed between two adjacent substrate layers (2). The preparation method of the graphene-based electric conductor includes the following steps that: one or more graphene layers are laminated with two or more substrate layers, so that a graphene layer and substrate layer alternately connected sheet can be formed; and the sheet is compressed, so that the graphene layer can be compressed between two adjacent substrate layers, so that a layered structure can be formed, and the graphene-based electrical conductor is obtained. The graphene-based electric conductor of the invention has the advantages of low resistance and small electric power loss. With the graphene-based electric conductor and the preparation method thereof adopted, power transmission efficiency can be improved, the distribution range of a power grid can be expanded, and compression processing can be facilitated.

Provided are low-cost, mechanically strong, highly electronically conductive porous substrates and associated structures for solid-state electrochemical devices, techniques for forming these structures, and devices incorporating the structures. The invention provides solid state electrochemical device substrates of novel composition and techniques for forming thin electrode / membrane / electrolyte coatings on the novel or more conventional substrates. In particular, in one embodiment the invention provides techniques for firing of device substrate to form densified electrolyte / membrane films 5 to 20 microns thick. In another embodiment, densified electrolyte / membrane films 5 to 20 microns thick may be formed on a pre-sintered substrate by a constrained sintering process. In some cases, the substrate may be a porous metal, alloy, or non-nickel cermet incorporating one or more of the transition metals Cr, Fe, Cu and Ag, or alloys thereof.

An inductor includes an elongate magnetic core, a coil wrapped around the core and a spacer that separates the coil from the core to provide a coolant passage between the coil and the core. The coolant passage may include an air passage that extends substantially parallel to an axis of the core and that has first and second openings proximate respective first and second ends of the core. The coil may include a twisted bundle of individually insulated conductors. The inductor may be housed in a flux-tolerant compartment, i.e., a conductive aluminum structure that supports eddy currents with relatively acceptable resistive losses.

In a press installation including a number of presses with servo-drives for operating the presses and auxiliary equipment such as workpiece handling devices wherein an energy management system is provided including a DC voltage intermediate circuit connected to a power supply grid via an AC / DC converter and to the servo-drives via servo-converters, a fly-wheel storage device is connected to the intermediate circuit for supplying energy thereto and recapturing energy therefrom under the control of a control arrangement which controls the flow of power between the intermediate circuit, the servo-drives, the fly-wheel storage device and the power supply grid.