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WO/2004/102765A1 |
A protection circuit (10) is formed to protect a load (11) when a short circuit develops during operation of the load (11). A load transistor (18) is formed to couple the load to a voltage return terminal. A disable transistor (19) is fo...
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WO/2004/098013A2 |
An arrangement (1) for transferring electric power from a power source to an electric power consumer (5) comprises a direct current intermediate circuit (9) having a first and a second direct current connection line. Electric power can. ...
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WO/2004/098014A1 |
The invention relates to a power supply unit (5) for a measuring apparatus (1) for determining and/or monitoring a physical or chemical process variable of a medium. According to the invention, at least one voltage limiting unit (10) and...
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WO/2004/098015A1 |
Disclosed is a surge protection device for multiple power outlets or power strips. Said surge protection device is embodied as a plug (1) that can be plugged in at a later time. The protection circuit (2-5) is cast into the plug member a...
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WO/2004/095518A2 |
A thyristor provides overcurrent protection to a low impedance load, such as a transformer, by adding a resistance in series with the transformer winding. As overcurrents attempt to pass through the transformer winding, a sufficient volt...
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WO2000077907A9 |
The present invention relates to a layered universal, multi-functional, common conductive shield structure with conductive pathways for energy and EMI conditioning and protection (800D) that also possesses a commonly shared and centrally...
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WO/2004/086826A2 |
A structural component is provided that includes a substrate and a ceramic layer deposited thereon. The ceramic layer is formed of a ceramic electrostatic discharge dissipative material and has an electrical resistivity within a range of...
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WO/2004/081978A2 |
A clamping circuit (10) including an input/output node (12), adapted to be coupled to the protected circuit or component; a first diode (D1) having an anode connected to the input/output node (12); a second diode (D2) having a cathode co...
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WO2004068670B1 |
A superconducting short circuit current limiter (40a) for an alternating current system includes AC reactors having superconducting direct current bias windings (4a, 4b) that at normal conditions maintain the reactor's cores in saturated...
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WO/2004/075390A2 |
The invention relates to a direct current motor control circuit. The invention also relates to the use thereof in a windscreen wiper system for vehicles. An MOS FET transistor with an anti-parallel diode (M3) is serially mounted on the b...
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WO/2004/068543A2 |
An ESD protection circuit (81) and a method for providing ESD protection is provided. In some embodiments, an N-channel transistor (24), which can be ESD damaged, is selectively turned on and made conducting. The purpose of turning on th...
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WO/2004/066492A1 |
Filter network for the reduction of the voltage switching speed between an electrical motor drive and an electrical motor and/or between an electrical distribution network and a motor drive, comprising for each s electrical phase a self-...
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WO/2004/062072A1 |
Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection during CPU current consumption going from high current to low current consumption. In one approach, a circuit as a power outp...
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WO/2004/049536A1 |
The invention relates to a circuit which comprises a protection line against electrostatic discharges (ESD) (3) provided with ESD diodes (32), a ESD protecting element (31) located between a terminal (1) and a power supply voltage of an ...
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WO/2004/045038A1 |
An inrush current limiter circuit (20) includes a mirrored transistor (50) responsive to a control signal (VDRIVE) developed from a sense current (ISENSE), and has a first source (51) coupled to a supply voltage, a common drain (53) that...
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WO/2004/045037A1 |
An inrush current limiter circuit (20) includes a detection circuit (30) that produces a control signal (VDRIVE) from a sense current (ISENSE). A power transistor responds to the control signal and has a source (51) coupled to an input n...
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WO/2004/042762A1 |
The invention concerns a device for protection against surge voltages, connected between an electrical line (50) and the earth connection (52), comprising a first connection electrode (12), a second connection electrode (18) and a switch...
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WO/2004/038883A1 |
The invention relates to a circuit arrangement for the protection of an integrated circuit (7) from electrostatic discharges (ESD protection), whereby a capacitance (9) is used as protective element in order to protect a high-frequency i...
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WO/2004/038817A1 |
A superconducting current limiting device (30) comprising: an interconnected high magnetic permeability structure including a central core (50) interconnected to at least a first and second arm (31, 32) branching off therefrom; a superco...
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WO/2004/036715A1 |
In a saturable reactor type power saving device for reducing a power consumption by controlling an AC current supplied to a load unit, the saturable reactor type power saving device, comprises a saturable reactor having a magnetic core, ...
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WO/2004/034545A1 |
The invention relates to an overvoltage protection circuit comprising an MOV (Metal Oxide Varistor) voltage limiting device (3) which is disposed in series with a GDT (Gas Discharge Tube) voltage limiting device (4). The invention is cha...
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WO/2004/034544A1 |
A differential mode surge protection apparatus (34) includes first (36) and second (38) solid state protection device in series between respective input and output connection points. The apparatus may be provided in conjunction with a co...
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WO/2004/032302A1 |
The invention relates to a feed unit (1) for the intrinsically safe energy supply of electrical consumers which are connected to the feed unit (1) by means of an electrically short line. Said feed unit comprises a constant current source...
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WO/2004/032350A2 |
The invention relates to a circuit arrangement comprising a terminal (1) for a high frequency signal, at least two additional signal lines (21a, 21b, 21c, 22a, 22b), a switching unit (3) for connecting the terminal (1) to a signal line (...
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WO/2004/030175A1 |
A voltage protection circuit comprising a gas discharge tube (GDT) connected in series with a capacitance (C) in which, once the GDT has fired, the capacitance acts to assist in turning the GDT off.
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WO/2004/027800A2 |
A circuit is provided for limiting the in-rush current of a radio device coupled to a low-power external power source and includes a switch circuit (19) in series between the power source (17) and the radio device (18), the switch having...
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WO/2004/025702A2 |
A semiconductor device for coupling a transient voltage at an input node to a reference node, the device having a bipolar transistor adapted to couple its collector to an input node and its emitter to the reference node and a driver devi...
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WO/2004/023505A1 |
The invention discloses a controller for an electromagnetic system of an AC contactor, which includes a full voltage energizing circuit and a freewheeling circuit. Its main character is that the freewheeling circuit consists of an energi...
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WO/2004/019464A1 |
The invention relates to a electrical network for surface and submarine vessels, for example, naval ships and for offshore units, embodied as an electrical on-board and/or propelling network with an AC-, DC- or AC- and DC-network, compri...
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WO/2004/017481A1 |
The invention relates to a sensor protection circuit for at least one sensor (6), especially in a motor vehicle electric system, comprising at least one supply line (3, 4) for supplying current to the sensor (6) and a current measuring u...
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WO/2004/015814A2 |
A method and/or device that may be used in locations where equipotential bonding is not practiced can be installed on a customer premises equipment device basis that provides over-voltage protection between the AC main and HFC ground pla...
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WO/2004/015836A1 |
A power-saving device of the present invention includes a plurality of excessive voltage suppressers, resisters, capacitors, and diodes appropriately connected between terminals R, S, N and G of a tri-state circuit. A plurality of copper...
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WO/2004/012317A2 |
A method for protecting a vehicle system from a load dump includes sensing an input voltage pulse exceeding a first value and determining whether the voltage pulse is a load dump. The method includes disconnecting the system from power i...
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WO/2004/008601A1 |
The aim of the invention is to limit an overvoltage on a parallel circuit of an IGBT (3) and a freewheeling diode(7). To this end, an undesired current spike is used to switch on the IGBT (3') blocked per se, during the presence of the c...
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WO/2004/006408A1 |
A protection apparatus (48) is provided which in addition to protecting electronic equipment (5) from overvoltage transients is also able to provide an indication of whether or not said transients are due to impedances associated with po...
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WO/2004/006407A1 |
The invention relates to a superconductor arrangement comprising a first superconductor (1) which is arranged in the action region of a magnetic field generated by a first coil (7). In order to support the change of the first superconduc...
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WO/2004/004090A1 |
The invention relates to a circuit arrangement (1) for limiting an electric current by means of a current limiter (2), said arrangement comprising at least one superconductive switching element located in a cryostat and having a bypass e...
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WO/2004/001925A1 |
An electrical device (10) includes a package (20) having an array of connections, a thermally conductive, electrically insulative substrate (12) in the package, a plurality of polymeric positive temperature coefficient (PPTC) resistors (...
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WO/2003/107395A2 |
A microcircuit (12) includes core (14) and other portions (16), which receive different supply voltages from disparate sources. An electrostatic discharge protection (ESD) circuit internally connects the lower and higher voltage terminal...
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WO/2003/103091A2 |
A circuit for attenuating a surge is disclosed that might include a conductor for receiving the surge (205), a capacitor (215), positioned along the conductor, for blocking the surge, and a gas tube (210) having a first end coupled to th...
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WO/2003/103123A1 |
A high-impedance-insertion system suppressis load-produced electromagnetic noise from interfering into a power source by coupling the load to the power source through a switch (9), the power source is an AC power source, the switch (12) ...
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WO/2003/098767A2 |
The invention concerns a device for protecting (2) an electric power distribution network (1) against transient voltage surges, characterized in that it comprises a discriminating system (4) capable of measuring in the network the voltag...
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WO/2003/098766A1 |
The central power supply device (L'1, N'1) for the electric supply of the domestic appliance and an electronic control unit of said appliance is connected to the output side of the interference suppression filter (3). The aim of the inve...
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WO/2003/096507A1 |
The invention relates to an inverter for an electric machine, which comprises several, in particular six switch elements that are arranged in a bridge circuit and produce a connection between the electric machine and a battery. The switc...
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WO/2003/094317A1 |
A method and apparatus for improving the fault protection of a monitor circuit is provided by coupling an input protection circuit to an output section. The input protection circuit may include a fusible device that limits or removes a f...
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WO/2003/088356A1 |
The present invention provides overvoltage protection. Specifically, the present invention provides a voltage variable material (VVM, 100) that includes an insulative binder (50) that is formulated to intrinsically adhere to conductive a...
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WO/2003/081777A1 |
In an optoelectronic interface for digital communication the slopes of the rising edges and falling edges of a digital signal are decreased making use of an RC-combination. The amount of Emi generated is thereby decreased.
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WO/2003/079493A2 |
There is provided a method for protecting loads associated with power distribution system inductive signal couplers. The method includes (a) providing an inductive signal coupler (110) having a first winding (105) in series with a line c...
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WO/2003/069753A1 |
A protection device is enclosed. The device has a first MOSFET (Q 10), a second MOSFET (Q 11) and a third JFET (Q 12) with their conductive paths in series with the JFET (Q 12) being located between the MOSFETS (Q 10, Q 11). The source o...
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WO/2003/067617A2 |
The present invention discloses systems and methods for protecting electronic devices 'switching and non-switching' such as micro electro-mechanical system 'MEMS' devices and solid state relays due to lightning exposure or electrical pow...
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