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Patent Searching and Data


Matches 301 - 350 out of 6,624

Document Document Title
WO/2004/025703A2
A system for electrically contacting a semiconductor wafer (22 in Fig. 1) during implanting of the wafer includes one or more pairs of closely spaced contacts located adjacent the wafer (12a and 12b in Fig 1) and a driving circuit connec...  
WO/2004/001778A1
The invention relates to circuit arrangement for generating an X-ray tube voltage (Ut), comprising a mains input circuit (1) for generating an intermediate circuit voltage (Udc), an inverter circuit (2) for converting the intermediate ci...  
WO/2003/100798A1
The invention relates to a current collector (4), especially a current collector of a regulating transformer, for the sliding displacement on a contact path (5) which is formed by at least partially insulated segments, especially winding...  
WO/2003/055283A1
Programmable alternating voltage stabiliser/regulator system for feeding a load, in particular consisting of fluorescent bulbs, wherein the selective connection, even with powered load (through electromagnetic selection relays (30,31) an...  
WO/2003/044612A1
The invention relates to a circuit component (L1) with controllable impedance, comprising a body (1) of a magnetisable material, a main winding (A1) wound round the body (1) about a first axis and a control winding (A2) wound round the b...  
WO/2003/044613A1
A controllable transformer device comprising a body (1) of a magnetic material, a primary winding (4) wound round the body (1) about a first axis, a secondary winding (2) wound round the body (1) about a second axis at right angles to th...  
WO/2003/041247A1
An electromagnetic generator (10, 130, 150, 170) without moving parts includes a permanent magnet (12, 154, 174) and a magnetic core (16, 132, 156) including first and second magnetic paths (18, 20). A first input coil (26, 166) and a fi...  
WO2002086647A3
The invention relates to an arrangement for automatically influencing a mains supply. A voltage transformer is provided as a pilot transformer which detects the real value of the voltage which is to be adjusted and which transmits said v...  
WO2002023301A9
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/2002/103725A1
An electrical apparatus and method for matching the input power source and output impedance of the electrical apparatus utilizes electromagnetic devices having two or more inductive windings, which may be connected in various series and/...  
WO/2002/093600A1
The invention relates to a load selector for tapped transformers used for the uninterrupted switching over between tappings of a regulating winding of a tapped transformer. The load selector comprises a cylinder, which is made of an insu...  
WO/2002/086647A2
The invention relates to an arrangement for automatically influencing a mains supply. A voltage transformer is provided as a pilot transformer which detects the real value of the voltage which is to be adjusted and which transmits said v...  
WO2002048718A3
The present invention discloses a method and apparatus (5) for condition diagnosing of an inductive power device (1), such as a transformer or reactor, having power windings (2) immersed in a fluid (3) being cooled by cooling devices (4)...  
WO2002045101A3
A control system, method and apparatus is provided for an orthogonally variable inductor. A method and apparatus is also provided for rectifying an AC power supply for a DC load. DC voltage regulation is also provided. Rectification and ...  
WO/2002/058088A1
The invention relates to a thyristor tap changer that comprises a mechanical tap selector and a diverter switch with thyristors as the switching means. The inventive tap changer is further characterized in that only the tap selector is m...  
WO2002023301A8
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...  
WO2002027910A3
A voltage regulator (100) apparatus comprises a transformer having a primary winding (102) and a secondary winding (104), a plurality of further windings selectively connected to one of the primary winding and a secondary winding, and a ...  
WO/2002/048729A1
A method and means for diagnosing transformer tap changers is provided. Pressure is monitored in an insulating liquid of a tap changer for a period of time in which switching of the tap changer is carried through. Switching-related infor...  
WO/2002/048730A1
The present invention discloses a method and apparatus (4) for condition diagnosing of a tap changer (1) immersed in a cooling fluid (3), controlling and regulating an inductive power device (5), such as a transformer or reactor. The dia...  
WO/2002/048718A2
The present invention discloses a method and apparatus (5) for condition diagnosing of an inductive power device (1), such as a transformer or reactor, having power windings (2) immersed in a fluid (3) being cooled by cooling devices (4)...  
WO/2002/045101A2
A control system, method and apparatus is provided for an orthogonally variable inductor. A method and apparatus is also provided for rectifying an AC power supply for a DC load. DC voltage regulation is also provided. Rectification and ...  
WO/2002/031847A1
The invention relates to a energy accumulator for a sequence switch, provided with a lifting carriage (8), which may be operated by a drive shaft and a driven piece (9), which in turn operates a drive shaft connected to the transfer swit...  
WO/2002/027910A2
A voltage regulator (100) apparatus comprises a transformer having a primary winding (102) and a secondary winding (104), a plurality of further windings selectively connected to one of the primary winding and a secondary winding, and a ...  
WO2001075913A3
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/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...  

Matches 301 - 350 out of 6,624