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WO/2003/063203A2 |
A low loading capacitance on-chip electrostatic discharge (ESD) protection circuit for compound semiconductor power amplifiers is disclosed, which does not degrade the circuit RF performance. Its principle of operation and simulation res...
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WO/2003/058790A1 |
Active transient suppression apparatus coupleable in series with an electrical pathway into a potentially explosive environment for limiting current, voltage and energy thereto comprises: an impedance element coupleable in series with th...
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WO/2003/056670A1 |
The invention relates to a multipole overvoltage protection system for a polyphase power supply network. The inventive system comprises four overvoltage protection elements (1), one overvoltage protection element (1) being arranged in ea...
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WO/2003/055023A2 |
A frequency selective transient voltage protector (FSTVP) circuit that may be used in connection with a communication line over which POTS and DSL service may be simultaneously provided. The FSTVP circuit attenuates high frequency transi...
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WO/2003/052898A1 |
A circuit (12) for transient voltage clamping, the circuit being internal to a motor driver ASIC (10) for a hard drive and comprising: a power transistor (MO) for sinking a power supply voltage (V¿pwr?) subjected to transient variation;...
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WO/2003/052826A1 |
An ESD protection circuit is provided which offers full protection for sub micron CMOS technology integrated circuits that does not have a latchup problem as in silicon controller rectifier circuits. The primary ESD protection transistor...
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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...
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WO/2003/044922A2 |
The object of the invention is a short-circuit current limiter for the purpose of a short-circuit protection in alternating current circuit intended in particular, for the purpose of a short-circuit protection in the power system of alte...
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WO/2003/041265A1 |
To damp transients that are generated by a complex load on its input terminals that are connected to a first supply voltage, one input terminal (IN2) is connected to an output terminal of a buffer amplifier (1), to the (+)-input terminal...
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WO/2003/038840A1 |
A superconducting cable comprises a first conductor layer constituted of a superconducting wire and an insulation layer formed outside the first conductor layer. The first conductor layer is a superconducting cable that is an aggregate o...
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WO/2003/034564A1 |
The invention concerns an intrinsically secure device for supplying redundant current-voltage for an electricity receiver in a zone protected against explosions. The device is of the type comprising at least two supply circuits for provi...
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WO/2003/034565A1 |
The invention concerns a voltage limiter for efficiently limiting brief or prolonged surge voltages. Said voltage limiter comprises a varistor (1) and a discharge path switchable in parallel to the varistor. Said discharge path comprises...
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WO2002099605A9 |
An embedded control system is provided, which includes a generically applicable computer module (10), display module (12), keyboard module (14), power supply module (20), and at least one input/output module. The system is adapted for di...
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WO/2003/032465A2 |
The invention concerns an alternator comprising a coiled rotor and a multiphase stator connected to a rectifier bridge provided with switches (7) in the form of MOS transistors, such as MOSFET transistors, characterized in that the trans...
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WO/2003/032459A1 |
An electronic apparatus comprises a power source terminal and protection, power source control, and load circuits series connected one after another to the power source terminal. The protection circuit has an overcurrent protection devic...
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WO/2003/028185A1 |
The invention concerns an electric component comprising a thermal fuse having a ceramic base body (1), on the surface of which are applied contact layers (5, 10) and a second material (15). The invention is characterized in that the spec...
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WO/2003/026093A1 |
A circuit for protecting a plurality of tip/ring SLIC cards (4) during overcurrent and overvoltage conditions. Diode pair (8-12) corresponding to each tip/ring pair provides positive voltage overvoltage protection in a negative powering ...
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WO/2003/021737A1 |
To protect a high-frequency integrated circuit (1) against higher voltages than normal operating voltages on an input/output terminal connected to a bonding pad (2), a semiconductor varistor (3) having low and essentially constant resist...
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WO/2003/015232A1 |
An ESD protective triggering circuit for a triggering circuit for a solid state ESD protective device (8). The arrangement is to provide a controlled current to the protective device that triggers the device (8) so that the device snaps-...
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WO2002045233B1 |
Compact and integral arrangemetns for an energy-conditioning arrangement (800q) having various predetermined pathways (813a, 813b) utilized in part for the purpose of conditioning energies of either one or multiple of circuitry that woul...
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WO/2003/009310A2 |
The invention relates to a surge voltage protector (1) which comprises a discharge current path with at least one varistor block (4a, 4b, 4c). In order to prevent the varistor blocks (4a, 4b, 4c) from bursting when an inner error is prod...
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WO/2003/007452A1 |
An ESD apparatus which includes an electrical overstress suppression device (16) in series with a capacitor (24). The ESD apparatus is ideally suited for use with network communication devices, but also for any electronic device requirin...
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WO/2003/007451A1 |
An RF power device comprising a power transistor fabricated in a first semiconductor chip and a MOSCAP type structure fabricated in a second semiconductor chip. A voltage limiting device is provided for protecting the power transistor fr...
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WO/2003/005552A1 |
A power inverter comprising series capacitors for dividing a DC voltage and PWM inverter bridges for converting a DC voltage into an AC phase voltage having three potentials, i.e., a positive voltage, a negative voltage, and intermediate...
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WO/2003/005319A1 |
An intrinsically safe explosion−proof sensor circuit is realized through a simple system. An intrinsically safe explosion−proof sensor signal processing circuit is characterized by comprising a sensor section for measuring a physical...
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WO/2002/103876A1 |
A system to protect electrical circuits from rapid changes of voltage associated with a fault in an electrical load comprises an inductor placed in series between a drive circuit and load. The inductor is designed to be inefficient or lo...
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WO/2002/099663A2 |
An intrinsically safe field bus system (1) comprising a field bus (2), a power source (3), a terminating resistor (7) and at least one field bus device (4) connected to the field bus (2). The power source (3) is connected to a first end ...
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WO/2002/096696A1 |
A control system (10) actively limits the power drawn from a main power distribution bus (20) by one or more electric loads (30). The system (10) includes circuitry (14) for determining a maximum permissible current magnitude that may be...
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WO/2002/095895A1 |
A circuit arrangement includes a current measuring or temperature measuring device, used for triggering a shunt device. Said shunt device produces a short-circuit, which directly leads to the blowing of a fuse. The arrangement is modular...
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WO/2002/095893A1 |
A method and arrangement for reducing stress in an electrical network. In the method and arrangement, an inrush current caused by a network component or part connected to the live electrical network is minimized, the network component or...
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WO/2002/091398A2 |
A circuit protection arrangement (1) particularly useful in protecting battery assemblies. The arrangement contains a first PCT device (3) which has a first switching temperature Ts1, has a resistance at 20°C R1, has a hold current at a...
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WO/2002/084837A1 |
A vehicle power supply management system includes a load absorbing device that absorbs an excess voltage from the vehicle battery. Under circumstances, such as at vehicle shutdown when an excess voltage spike occurs at the battery, the l...
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WO/2002/080330A1 |
An amalgamation of selected energy pathways and other elements formed at least in-part by sequential manufacturing operations and made operable to be coupled and/or formed as part of a predetermined assembly and/or assemblies and/or asse...
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WO/2002/075890A1 |
Arrangements for a surge protection device (200) reduce the effects of mutual inductance and therefore, the overall inductance in electrical connections between suppression components (D1-4) in the device. Suppression components (D1-4) i...
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WO/2002/075892A1 |
An electrostatic discharge (ESD) protection device (102) having high holding current for latch-up immunity. The ESD protection circuit is formed in a semiconductor integrated circuit (IC) (100) having protected circuitry. The ESD protect...
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WO/2002/071612A2 |
A method of providing bias voltages for input output connections on low voltage integrated circuits. As integrated circuit voltages drop generally so does the external voltages that those circuits can handle. By placing input and output ...
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WO/2002/067279A2 |
Embodiments of the present invention provide methods and circuitry (100) for protecting a circuit (112) during hot-swap events. Hot swap protection circuitry (100) includes as overcurrent detection circuit (115) which decouples power fro...
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WO/2002/067281A1 |
An improved switch assembly that substantially reduces the high inrush current that initially flows through switch-activated devices. The switch assembly includes multiple poles connected in parallel. Each pole has a set of electrical co...
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WO/2002/065606A2 |
Compact and integral arrangements for an energy-conditioning arrangement (10005) having various predetermined energy pathways (S-L-C2) utilized in part for the purpose of conditioning energies of either one or multiple of circuitry. Some...
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WO/2002/063739A1 |
A heater (13) and a thermistor (14) are parallel-connected to form a parallel-connection circuit, and a main fuse (11) is series-connected to the circuit to form a protection circuit (6). Since a charge/discharge current runs through the...
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WO/2002/061908A1 |
Circuit having a measurement circuit for carrying out a high-impedance measurement in an explosion hazardous zone, with the aid of a safety circuit, the voltage limiter in the safety circuit comprising one or more gas discharge tubes. As...
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WO/2002/061909A2 |
An inrush circuit for electronic devices is particularly useful for Point-of-Sale printers. The circuit applies an active feedback-controlled voltage ramp to a bulk capacitor by means of a P-channel field effect transistor that is operat...
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WO/2002/058204A2 |
A modular and scalable Matrix-type Fault Current Limiter (212) that fuctions as a 'variable impedance' device in an electric power network, using components made of superconducting and non-superconductiong electrically conductive materia...
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WO/2002/056473A2 |
A method of providing bias voltages for input output connections on low voltage integrated circuits. As integrated circuit voltages drop generally so does the external voltages that those circuits can handle. By placing input and output ...
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WO2002033798B1 |
A predetermined single electrode shielding set (800e) for groupings of complementary electrodes that are operable to shield and that together are selectively formed or amalgamated into a predetermined sequential combination of commonly c...
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WO/2002/054559A1 |
A surge-current avoiding device and its avoiding circuit are disclosed, which can protect an apparatus from surge current by controlling the surge current flowing in the reverse direction by restricting the direction of conduction of the...
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WO/2002/051668A1 |
The present invention relates to intelligent fuse box (1) for a vehicle's multiplex power distribution system, the fuse box including outputs (3) for driving the vehicle's functional components/actuators and/or cable buses (11-13) equipp...
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WO/2002/052688A1 |
A power supply circuit comprising an active power factor correction circuit. The active power factor correction circuit comprises a controller for controlling both the power factor correction and the inrush current control circuit. The i...
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WO/2002/045232A1 |
The present invention relates to an inrush current limiting circuit, a power source device and a power conversion device. It is an object of the present invention to limit an inrush current with high reliability and durability while redu...
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WO/2002/045227A2 |
The invention relates to a method and a device for protecting at least one consumer against surges in a method for the contactless energy transmission of electric power from one or more medium frequency power source(s), whose frequencies...
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