| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Motionless electromagnetic turbine | US10759829 | 2004-01-20 | US20050156702A1 | 2005-07-21 | Eric Marshall |
| An electromagnetic turbine without moving parts includes a magnetic core with three magnetic paths and magnetic connectors arranged between the three paths forming two adjacent closed magnetic loops. Three coils extend individually around portions of each magnetic path. The three coils are electrically pulsed to provide current pulses in the coils. Driving electrical current through each of the coils in sequence results in a flow of magnetic flux external to the magnetic core. The sequence is arranged to create a continuous one-way flow of magnetic flux through the inside of the core, then out one end where the flux extends outward and sweeps external to the core to the opposite end of the core where the flux collapses into the core. The sweeping magnetic flux induces electrical currents into electrically conductive material external to and not part of the turbine. Magnetic flux from the external currents interacts with the sweeping flux, resulting in a net force. The force either absorbs energy from relative deceleration of external material, converting the deceleration to electrical energy; or electrical energy provides relative acceleration of external material, converting the electrical energy to acceleration. | ||||||
| 82 | DEVICE FOR SUPPLYING AN ELECTRONIC PROTECTION DEVICE TO BE USED IN A LOW-VOLTAGE CIRCUIT BREAKER | US10905150 | 2004-12-17 | US20050141159A1 | 2005-06-30 | Federico Gamba; Severino Colombo; Francesco Casalinuovo |
| A supply device (1) for an electronic protection device to be used in a low-voltage circuit breaker. The supply device basically comprises a primary conductor (11), a secondary winding (12), a first magnetic circuit (10), and at least one second magnetic circuit (20). The first magnetic circuit (10) is such as to surround said primary conductor (11), which is related to a phase protected by the protection device; at the same time, the first magnetic circuit (10) constitutes the core of said secondary winding (12) that is used for supply of the protection device. The second magnetic circuit (20) is structurally separated from the first magnetic circuit (10), but is operatively connected thereto for subtracting part of the first magnetic flux generated within it by the current circulating in the primary conductor (11). | ||||||
| 83 | Transformer and voltage supply circuit thereof for lighting tubes | US10799065 | 2004-03-12 | US20040183448A1 | 2004-09-23 | Ching-Fu Hsueh; Wan-Chin Hsu; Chih-Shin Huang |
| A transformer. The transformer drives a plurality of lighting tubes and comprises a coupling iron core, a first winding around the coupling iron core, a first bobbin disposed between the first winding and the coupling iron core, a plurality of second windings, independent of each other and respectively winding around the exterior of the first winding, wherein the second windings have the same winding number, and a second bobbin disposed between the first winding and one second winding. | ||||||
| 84 | Bobbins, transformers, magnetic components, and methods | US09184461 | 1998-10-20 | US06600402B1 | 2003-07-29 | Michael B. LaFleur; Patrizio Vinciarelli |
| A bobbin is adapted to support a winding on a permeable core and has a wall that provides a confined thermally conductive channel that causes conduction of heat along a predetermined path from the core to a location outside the winding. A value of magnetizing inductance in a transformer is set by adjusting the gap until the value of magnetizing inductance has been set and attaching a segment of the bobbin to a pair of core pieces to maintain the gap. A permeable slug provides a permeable path outside of the hollow interior space and does not couple the winding, and an electrically insulating coupler is interposed between the slug and the winding to electrically insulate the winding. | ||||||
| 85 | Inductor with variable air-gap separation | US09879942 | 2001-06-14 | US20030043006A1 | 2003-03-06 | Xiaodong Sun; Yanfang Liu |
| An inductor with multiple air-gap separations comprises a magnetic core and an enameled wire around the magnetic core. The magnetic core has an air gap with at least a large-gap portion and a small-gap portion. The small-gap portion provides enough inductance in case of low load input to prevent harmonic distortion. The large-gap portion provides enough inductance in case of heavy load output and low input voltage to prevent saturation and temperature rise, thus enhancing power efficiency. | ||||||
| 86 | Planar magnetic component with transverse winding pattern | US08963938 | 1997-11-04 | US06252487B1 | 2001-06-26 | Ronald M. Wolf; Jose Azevedo |
| A high-leakage planar magnetic component such as an inductor, having a winding structure in which flat winding turns are oriented transverse to the plane of the winding structure, exhibits significantly lower winding losses than components having a stacked arrangement of flat winding turns parallel to the plane of the winding structure. A dense winding structure having such a transverse orientation can readily be made by forming a flat conductor into a coil using conventional wire winding techniques. | ||||||
| 87 | Method and apparatus for an electromagnetic propulsion system | US09260312 | 1999-03-02 | US06200102B1 | 2001-03-13 | Rodolfo E. Diaz |
| A method and apparatus to amplify the magnetic field in an electromagnetic circuit is provided. Amplification factors of several orders of magnitude may be obtained. The system is applicable to a number of different systems, including melt levitation and electromagnetic pumping and propulsion. One embodiment of the invention uses a non-conducting permeable core wound around a dielectric core. An alternating voltage source is connected to a solenoid which is wound around a section of the permeable core. The permeable core has a gap within which a flux concentrating cold crucible is provided. Melt levitation processing takes place within the cold crucible. | ||||||
| 88 | Three phase to single phase power protection system with multiple primaries and UPS capability | US551823 | 2000-04-18 | US6166531A | 2000-12-26 | Michael W. Hogan; Gary Jungwirth; Teresa A. Kamper; Gregory C. Kohls |
| This invention relates to methods of providing uninterruptible, regulated, single phase power to a critical single phase load when such power is derived from two of the phases of a polyphase power source. This invention describes a dual primary ferroresonant transformer which provides regulated and isolated voltage to a single phase critical load, when powered by a plurality of phases from a polyphase power source, and whereby a loss of electrical power to either a first or a second primary does not disturb the single phase power output voltage. | ||||||
| 89 | Electrically controllable inductor | US658009 | 1996-06-04 | US5754034A | 1998-05-19 | David Ratliff; Peter H. Burgher; John Boomer |
| An apparatus for providing an electrically controllable inductor which uses a first and a second magnetic core (20, 24) spaced apart from one another. A DC bias coil (22) is wound on the first magnetic core (20). An inductor coil (26) is wound on both the first magnetic core (20) and the second magnetic core (24). The inductance seen at terminal connections (80, 82) of the inductor coil (26) is variable in dependence upon a magnitude of a flow of direct current through the DC bias coil (22). In one embodiment of the inductor, the first and the second magnetic core (20, 24) are each formed using a pair of U-shaped core segments (30, 32, 60, 62) located adjacent to one another. In this embodiment, the first and second magnetic core (20, 24) are located in an opposing relation to one another, with the DC bias coil (22) wound on inner legs (64, 72) of the first magnetic core (20) and the inductor coil (26) wound on inner legs (64, 72, 34, 44) of both the first and the second magnetic core (20, 24). A system is provided employing the electrically controllable inductor in combination with one or more other components (100). | ||||||
| 90 | Trip device comprising at least one current transformer | US529975 | 1995-09-19 | US5726846A | 1998-03-10 | Pascal Houbre |
| A trip device comprises at least one current transformer for supplying power to electronic circuits. The current transformer comprises a magnetic circuit, surrounding a primary conductor, a secondary winding wound onto a part of the magnetic circuit forming a core, and a magnetic shunt branch connected on the magnetic core. The magnetic shunt comprises an air-gap. When the current flowing in the primary conductor is of low value, the magnetic flux stopped by the air-gap flows essentially via the core of the secondary winding. At high current levels the induction is greater and a large part of the magnetic flux passes through the shunt via the air-gap. The current transformer has a non-linear current response which limits excess power supplied to the electronic circuits and dissipated in the transformer. The trip device is useful, for example, in a circuit breaker. | ||||||
| 91 | Flyback converter having a high efficiency irrespective of magnitude of a load | US814117 | 1991-12-26 | US5461555A | 1995-10-24 | Tokimune Kitajima; Tadasi Kobayasi |
| In a converter which is usable as a kind of DC--DC converter and which comprises a transformer for processing an exciting current into an excited current under influence of an inductance value of the transformer, the inductance value is controlled in compliance with a value of the exciting current. The exciting current is controlled by a current control circuit with reference to the excited current so that exciting current is intermittently supplied to the transformer. While the exciting current is absent during intermittent supply to the transformer, the transformer produces the excited current. | ||||||
| 92 | a-c/d-c microwave oven | US694813 | 1991-05-02 | US5237140A | 1993-08-17 | Naoki Akazawa; Makoto Gezima |
| An a-c/d-c microwave oven adapted to be connected to an a-c and/or d-c power source. The oven has an inverter for converting d-c power to a-c power to feed power to a magnetron generating high-frequency energy via a transformer. Input from the d-c and a-c power sources is selectively fed to the magnetron. A first primary winding is fed commercial a-c power. A second primary winding is fed on a-c voltage from the inverter. A secondary winding connecting to the magnetron is wound on the transformer. A predetermined voltage is adjusted in the secondary winding of the transformer by adjusting the frequency of the a-c voltage from the inverter at a higher level than the commercial a-c power, which is fed to the second primary winding. | ||||||
| 93 | Shell-form transformer in a battery powered impact device | US621225 | 1990-11-30 | US5107390A | 1992-04-21 | Sandor Goldner |
| A shell-form transformer for charging an energy storage device contained in a battery powered impact device. The primary and secondary windings of the transformer are wound in a predetermined manner around the center leg of a core which has an air gap therein. The gap increases the reluctance of the center leg which decreases the flow of magnetic flux through the core which, in turn, enables the current applied to the transformer primary to be increased without causing the core to be saturated. As a result, the current applied to the transformer primary can be increased, thereby increasing the output voltage supplied from the transformer secondary which, in turn, enables rapid charging of the energy storage device. | ||||||
| 94 | Switching mode power transformer | US328572 | 1989-03-27 | US5103201A | 1992-04-07 | Anton Schmeller |
| A switching mode power transformer for operation as feedback converter has a core which is made in only one piece and which does not require any particular finishing operations. The core has a center core part with windings thereon and outer core parts which are chamfered on their mutually remote sides to form outer surfaces which converge towards each other. | ||||||
| 95 | Ferroresonant transformer with dual outputs | US241889 | 1988-09-08 | US4943763A | 1990-07-24 | Howard H. Bobry |
| A ferroresonant transformer having dual outputs electrically and magnetically isolated from one another. The transformer includes a core, a primary coil on the core adapted to be connected to a source of alternating current, and two pairs of secondary windings located at axially opposite ends of the primary winding. Each of the secondary windings is coupled to the primary through a steel shunt located between the primary winding and the respective secondary winding. Each of the two secondary windings has a resonant winding associated therewith and connected to a ferrocapacitor to produce an inductive coupling. Each of the secondary windings has a pair of output terminals, each of which is connected to a separate load, with the effect that the loads are electrically and magnetically isolated from each other. | ||||||
| 96 | Temperature sensitive amorphous magnetic alloy | US346952 | 1982-02-08 | US4517017A | 1985-05-14 | Koichiro Inomata; Shinichi Murata |
| Disclosed is a temperature sensitive amorphous magnetic alloy which shows a Curie point of not higher than 200.degree. C. and whose composition is represented by the formula:(M.sub.1-a Ni.sub.a).sub.100-z X.sub.zwhereinM=Co or Fe;X=at least one of P, B, C and Si;0.2.ltoreq.a.ltoreq.0.8 when M is Co, or 0.4.ltoreq.a.ltoreq.0.9 when M is Fe; and15.ltoreq.z.ltoreq.30. | ||||||
| 97 | Welding power supply having dual output transformer | US42656073 | 1973-12-20 | US3921055A | 1975-11-18 | DORSEY WILLIAM FRANKLIN |
| A welding power supply incorporating a transforming device comprising a three legged ferromagnetic core structure wherein the third leg of the structure is separated from the other legs by at least one nonmagnetic gap and wherein the primary winding is wound about the first leg and the secondary winding wound partially about the first leg and partially about the third leg.
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| 98 | Magnetic square wave voltage generator | US3673491D | 1970-12-21 | US3673491A | 1972-06-27 | BAYCURA ORESTES M |
| A magnetic square wave voltage generator comprising at least one core having both a high impedance flux path and a low impedance flux path. An input winding couples each of the high and low impedance flux paths and one output winding couples the high impedance flux path and another output winding couples the low impedance flux path. The two output windings are series connected and when a sinusoidal signal is applied to the input winging it results in a square wave output signal across both series connected output windings.
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| 99 | Electrical coil having integrated capacitance and inductance | US3638155D | 1970-11-06 | US3638155A | 1972-01-25 | COMBS P VAN |
| This coil comprises an annular core surrounded by a plurality of layers of electrically conductive wire windings separated from each other by at least one layer of metal foil, and at least one layer of elastic dielectric material. By selective connection of the wire windings and the intervening foil layers in electric circuits, the coil may be made to function selectively as a choke, filter, signal delay, or as a storage device or absorber for impulse energy. By adding axially extending metal strips to the coil between its layers of windings, the coil is suitable for use in an electric current generator of the magnetomotive variety.
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| 100 | High energy pulse generator utilizing a decoupling transformer | US3459960D | 1967-05-02 | US3459960A | 1969-08-05 | AALAND KRISTIAN; ZUCKER OVED S |
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