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Patent Searching and Data


Matches 351 - 400 out of 6,691

Document Document Title
WO/2002/023301A1
A transformer (90) includes taps (96a, 96b, 96c) by which electrical contact can be made to winding section (90a, 90b, 90c) of the transformer (90) at locations along its length between its end terminals. A first switch (94) permits cont...  
WO/2002/021544A1
A method for manufacturing a tapped coil having a strong tap made upper of loops wound with a high efficiency, a tapped coil, and an apparatus for manufacturing a tapped coil are disclosed. A tap composed of a single loop or loops can be...  
WO/2002/021543A1
A permanent magnet which is a bonded magnet comprising a magnet powder and a resin in a resin content of 20 vol % or higher and has a resistivity of 0.1 $g(V) cm or more, wherein the magnet powder is a rare earth magnet powder having an ...  
WO/2002/021546A1
An inductor (8) for an electrical circuit comprises a coil (14) having an input end (16) and an output end (18). The coil is wound about a solid continuous core (10) of magnetically permeable powdered iron material, having first and seco...  
WO/2001/090835A1
The invention relates to a magnetically influenced current or voltage regulator comprising a body (1) which is composed of a magnetisable material and provides a closed, magnetic circuit, at least one first electrical conductor (8) wound...  
WO/2001/086669A1
The invention comprises an energy dimmer drive and energy pilot that controls the amount of current and voltage conveyed from an input to a load, based on values selected by the user. The current and voltage is varied by controlling the ...  
WO/2001/075913A2
An induction device comprises a core (1) of magnetically permeable material, and is characterized in that the core comprises at least one component (3, 4, 5) comprising finely divided magnetic particles in a matrix of a dielectric materi...  
WO/2001/075914A1
A high voltage induction device (21; 30; 40) having core means (20; 31, 32; 41) comprising a solid closed magnetic core, an ac-winding wound (22; 33, 34; 42) on the closed magnetic core and magnetic means (23; 35, 36; 43) for increasing ...  
WO/2001/052281A1
The invention refers to the technical field of electricity. The said transformer caters for present deficiencies of variable transformers, regarding the size of the voltage supplied and its accuracy. The accuracy of the voltage supplied ...  
WO/2001/022445A1
An isolation transformer arrangement comprises an isolation transformer (17) having magnetically coupled primary (25) and secondary (18) winding arrangement wherein one of either the primary (25) or the secondary (18) winding is formed o...  
WO/2001/022447A1
An electric switching device for switching over a current path from a first electric conductor (7) to a second electric conductor (8), comprising a first contact member (1) and a set of second contact members (2, 3, 4, 5), which are arra...  
WO/2001/004720A1
A transformer with electronic adjustment of secondary voltage, comprising a primary winding (1) and a secondary winding (2), the primary winding being connected to the supply voltage. Its particularity consists of the fact that it compri...  
WO/2000/078100A1
A primary winding (1) and a secondary winding (2) are layered concentrically with a magnetic substance forming a main magnetic circuit (13) and the magnetic resistance of a subordinate magnetic circuit (14) placed between the primary win...  
WO/2000/074094A1
The invention relates to a switching device (1) comprising a switching means with two contact members arranged movably in relation to each other for making or breaking a current path between two cables with an electric conductor (6, 10),...  
WO/2000/072337A1
A transformer or reactor comprises a main winding (3) wound around a magnetic flux carrier (1), a regulating winding (4) connected to said main winding and wound around a part of said magnetic flux carrier between a first limb and a seco...  
WO/2000/072341A1
The invention relates to a contact assembly mounted on a preselector of a step switch, whereby the fixed preselector contact has a contact ring that can be interconnected. The appropriate design of the contact and of the openings in an i...  
WO/2000/072336A1
The invention relates to a method for regulating induced voltage in a transformer, alternatively for regulating reactive power in a reactor, comprising arranging a regulating winding on a regulating means rotatable around a magnetic flux...  
WO/2000/025328A1
The present invention pertains to the field of electrical engineering and power generation techniques and may be used as a continuously controlled resistor, or as a static compensator for excess power in electric networks. This invention...  
WO/2000/019459A1
A high power static electromagnetic device with a flux path, a main winding and one or more regulation windings surrounding portions of the flux path. A control device is coupled to the flux path for selectively admitting the flux therei...  
WO/2000/019458A1
Biased core devices and method of use are disclosed in which magnetic core energy losses due to hysteresis and eddy currents are greatly reduced in comparison to the core losses in prior art transformers and inductive devices. The presen...  
WO/2000/010182A1
The invention relates to a step switch with a selector for continuous switching between different winding tappings of a tapped transformer. The entire selector is configured as a separate component group and housed in a separate housing ...  
WO/1999/060588A1
The invention relates to a selector switch for tapped transformers to enable continuous tap switching with respect to a tapped winding, whereby fixed stepped contacts are arranged inside a cylinder made of insulating material on a horizo...  
WO/1999/060585A1
A variable inductor with a saturable core having three legs (42, 43, 44), including a center leg (43) and two outer legs. A control winding (45) is wound on the center leg and two outer windings (46, 47) are connected in parallel and wou...  
WO/1999/050884A1
Variable reactances in an impedance-matching box for an RF coil, in a plasma deposition system for depositing a film of sputtered target material on a substrate, can be varied by rotating inductor cores during the deposition process so t...  
WO1999028934A3
A high power static electromagnetic device with variable inductance has a magnetic circuit with a flux bearing region. A main winding and at least one control winding surrounds the portions of the flux bearing region. A control device is...  
WO/1999/031686A1
A flux-controlled variable transformer which performs high-speed control of voltage without providing a voltage control tap of a transformer is provided. The transformer has a first magnetic circuit and a second magnetic circuit. The fir...  
WO/1999/031685A1
A linear variable reactor which enables wide-range control and has its harmonic distortion reduced. A main winding (12) is wound around a first U-shaped cut core (11). A control winding (14) is wound around a second U-shaped cut core (13...  
WO1999017313A3
An induction controlled voltage regulator, primarily for high-voltage regulation, includes a magnetic circuit based upon a core (1) having one or more flux paths or legs (2) surrounded by high and low voltage windings (3, 15). The leg (2...  
WO1999017315A3
The invention relates to a method for regulating an induced voltage in transformer, alternatively reactive power of a reactor, wherein a winding (5; 26) is achieved with an insulating electric conductor including at least one current car...  
WO1999017314A3
A step-free induction controlled voltage regulator, primarily for high-voltage regulation, includes a magnetic circuit based upon a magnetizable core (1) having one or more flux paths or legs (2) with at least one winding (3) supplying t...  
WO1999017316A3
An induction controlled voltage regulator, primarily for high voltage regulation, includes a magnetic circuit based upon a metallic core (1) having two or more flux paths or legs (2) with at least one main winding (3) supplying the outpu...  
WO/1999/028934A2
A high power static electromagnetic device with variable inductance has a magnetic circuit with a flux bearing region. A main winding and at least one control winding surrounds the portions of the flux bearing region. A control device is...  
WO/1999/028928A1
A transformer (30) including a core (31), a first winding (34) to be regulated wound around a limb (32) of the core (31), at least one regulation second winding (37, 38) and moving means for moving the regulating winding(s) relative to f...  
WO/1999/027546A1
An electromagnetic device comprises at least one magnetic circuit (1) and at least one electric circuit (2, 3) comprising at least one winding (4, 5). The magnetic and electric circuits are inductively coupled to each other. The device c...  
WO/1999/017315A2
The invention relates to a method for regulating an induced voltage in transformer, alternatively reactive power of a reactor, wherein a winding (5; 26) is achieved with an insulating electric conductor including at least one current car...  
WO/1999/017313A2
An induction controlled voltage regulator, primarily for high-voltage regulation, includes a magnetic circuit based upon a core (1) having one or more flux paths or legs (2) surrounded by high and low voltage windings (3, 15). The leg (2...  
WO/1999/017316A2
An induction controlled voltage regulator, primarily for high voltage regulation, includes a magnetic circuit based upon a metallic core (1) having two or more flux paths or legs (2) with at least one main winding (3) supplying the outpu...  
WO/1999/017314A2
A step-free induction controlled voltage regulator, primarily for high-voltage regulation, includes a magnetic circuit based upon a magnetizable core (1) having one or more flux paths or legs (2) with at least one winding (3) supplying t...  
WO/1999/009569A1
A ferroresonant transformer (56) includes a three legged magnetic core. The core includes a center leg (58), and first and second flanking legs. Each of the center and flanking legs have respective first and second longitudinal ends. The...  
WO/1998/048432A1
The invention concerns a circuit for a load transfer switch comprising a regulating winding with a regulating stage (1) whose load current can be conducted via a lower or a higher winding tap (2, 3) and via at least two selector contacts...  
WO/1998/047159A1
A controllable inductor including at least one tubular core (10), a main winding (5) surrounding the core and a control winding (11) running substantially axially through said core and returning substantially axially outside thereof betw...  
WO/1998/043257A1
A tubular core (6) for a controllable inductor with a main winding (1) surrounding the core and a control winding (7) passing substantially axially through said core, said core being intended to receive a magnetic flux from said main win...  
WO/1998/043259A1
An arrangement with a conductor (15) intended to be on a high potential and a part (12) connected to ground and separated therefrom by at least a voltage receiving air gap (16, 17), comprising an insulating envelope (18) surrounding said...  
WO/1998/034249A1
A power- or regulating transformer (11) with voltage regulating means is disclosed. The transformer comprises regulating windings (15) made of a flexible conductor having electric field containing means forcing the electric field due to ...  
WO/1998/034244A1
A power transformer or inductor is disclosed. The winding (31) of the transformer/inductor is made of a flexible conductor (38) having electric field containing means forcing the electric field due to the electric current in the winding ...  
WO/1998/033256A1
An a.c. current distribution system fed by a current source for providing electrical power to a load, the current distribution system comprising a first and second conductive means connectable to the current source and coupling means to ...  
WO/1998/031024A1
A controllable inductor comprises at least a tubular core (13), a main winding (5) surrounding the core, a control winding (14) passing substantially axially through the core, a ground part (15) arranged inside the main winding and an el...  
WO/1998/029788A1
In a three-phase three-wire or four-wire auto-transformer, one set or a plurality of sets of main coils connected to an input terminal are interwound around three-phase core type cores by three circuits and a plurality of sets of excitin...  
WO/1998/029929A1
This invention is related to a device and a method for protection, in an electric power plant, of an object (1) against overcurrents from a network (3) or another equipment included in the high voltage plant, the device comprising a swit...  
WO/1998/027635A1
This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switc...  

Matches 351 - 400 out of 6,691