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WO/2002/033800A1 |
A circuit arrangement for driving a load (10) is disclosed, comprising at least one power transistor (18 - 21) and a polarisation reversal protector (32). The polarisation reversal protector (32) has a polarisation reversal protection tr...
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WO/2002/017456A2 |
A protective relay is provided to protect circuitry against reverse battery polarity or load dump, wherein a relay coil is operatively connected to a contact switch and is fed by a reverse bias diode (which may be a Zener diode) such tha...
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WO/2002/015392A2 |
The invention relates to a circuit configuration (IC1, IC2, IC3, IC4) for identifying a faulty state. A first transistor of one self-conducting type (S1, JF2, P1) is provided for identifying a faulty state such as a break in a supply lin...
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WO/2002/015357A1 |
The invention provides a protective circuit for protecting an electric circuit from excessive currents and/or voltages. The protective circuit is distinguished in that it comprises an electric resistor through which there passes the curr...
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WO/2001/080394A1 |
A safety circuit (20) for an electric motor. The electric motor includes at least one power input (L1), at least one motor winding (T2) and an input ground (T3). The safety circuit includes a relay (21) coupled to the power input (L1) an...
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WO/2001/080321A1 |
The invention concerns a device for protecting a photovoltaic module (10) against hot spots, comprising: a branch diode (20) of the photovoltaic module, means (36, 40) for detecting at least an operating characteristic of the photovoltai...
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WO/2001/067418A2 |
A personal electrical injury protection system is provided which can be worn by electricians, construction workers, or other individuals working around or with low-voltage lines (i.e., generally less than about 600 volts). The personal e...
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WO/2001/050566A1 |
An electronic earth leakage current device, comprising: a moving contact and a fixed contact which can be mutually coupled/uncoupled; and first sensor means for detecting an earth leakage current and for generating an electric signal whi...
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WO/2001/045224A2 |
The invention relates to a controller protective device for a dual-voltage electric system (1). Said protective device comprises two galvanically linked electric systems of different voltage in which electric consumers R¿1?, R¿2? are l...
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WO/2001/045226A1 |
This invention includes a circuit (100) that approximates the thermal behavior of a fuse (109) or other electronic device that is coupled in series with the circuit. In one preferred embodiment, the circuit protects a fuse (109) coupled ...
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WO/2001/031665A1 |
A series current regulator with an on-silicon temperature sensor (102) formed over current battery protection device (100). The protection device (100) regulates current in a pass element (101) linearly while sensing the junction tempera...
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WO/2001/024339A1 |
The invention relates to an electric stator device for an internal combustion engine, comprising a thermal monitoring protection unit (4) for deactivating the stator device when its limit operating temperature is reached. The stator devi...
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WO/2001/015183A2 |
Resettable circuit breakers (10) having an independent trip mechanism (26) and a reset lockout (60) are provided. The trip mechanism operates (26) independently of the fault protection operations, and the reset lockout (60) prevents the ...
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WO/2000/073866A1 |
A method of monitoring non-electrical characteristics, i.e., temperature, humidity of pressure, of a protected load in an intelligent electronic device is presented. The method senses a non-electrical characteristic of the protected load...
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WO/2000/070724A1 |
A substation (10) for distributing electric power includes protective relays (51, 53, 55) whose trip points are made to be a function of temperature, the protective relays being used to control the opening and closing of circuit breakers...
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WO/2000/060716A1 |
The invention relates to a device (7) and to a method for monitoring the temperature for an especially mobile terminal (MC), especially for installation in a stationary and/or mobile device (F1..Fn), especially a motor vehicle, a constru...
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WO/2000/059090A1 |
The present invention provides a more reliable protection device (66) and an improved PIC switch (70). According to the invention, the over-temperature status of the switch as well as the overcurrent status of each of a plurality of port...
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WO/2000/054121A1 |
An electronic cut-out preventing electric and/or electrically controlled consumers from undesirable temperature changes, consists of a high interrupting-capacity switch (HICS), connected between the source (S) of electric power and the c...
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WO/2000/041275A1 |
Disclosed is an electrical receptacle which is safe for children yet easy for adults to use. This electrical receptacle provides power only to a properly inserted plug and makes use of one or more sensors which are able to detect blade i...
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WO/2000/041286A1 |
A lightning protection system including a monitoring system (10) for detecting dangerous atmospheric conditions within specific geographic zones, a transmission system (12) for sending control codes, and multiple circuit connection/disco...
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WO/2000/031852A1 |
Surge suppressor apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltag...
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WO/2000/024105A1 |
The present invention provides a circuit protection device for protecting an electrical load (20). The device comprises a three-terminal switch-element (10) having first, second and third terminals, the first terminal for series connecti...
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WO/2000/024126A1 |
The present invention provides a circuit protection device that has a reduced size and weight and is particularly suitable for use, for example, in portable electronic devices and high density electronic circuits. According to one embodi...
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WO/2000/019773A1 |
A soft heating element (1) utilizing individually insulated electrically conductive carbon (6) or metal containing threads/fibers of metal wires that are woven together with nonconductive threads, into sheets, sleeves or strips. The indi...
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WO/2000/016459A1 |
A fault-current protection device (1) comprising an overload release circuit (4) that is functionally independent of line voltage and contains a summation current transformer (2), in addition to an overload protection device (18) arrange...
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WO/2000/014842A1 |
A control system for bathers with ground continuity and ground fault detection includes an electronic controller which controls operation of electrically powered devices such as an electric heater assembly connected in a water flow path ...
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WO/2000/014456A1 |
A control system for bathers includes an electronic controller which controls operation of an electric heater assembly connected in a water flow path for heating water. The heater assembly includes a heater housing and electric heater el...
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WO/2000/011758A1 |
The present invention relates to an explosion-proof plug-in connector (1) comprising two tabs (2, 3) which enable a current to flow from a power supply to a user when they are plugged in. A switching device (4) is provided between one co...
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WO/2000/011696A1 |
Resettable circuit interrupting devices (10) having a reset lockout and an optional independent trip mechanism (50, 52, 54) are provided. The reset lockout prevents the resetting of the circuit breaker if the fault protection is non-oper...
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WO/2000/008733A1 |
The present invention provides a simple, low cost power line protection device and method suitable for protecting data bus and power lines such as in the USB (Universal Serial Bus) configurations and other power management circuits. In o...
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WO/1999/067861A1 |
A temperature sensitive circuit interrupting arrangement includes a temperature controlled relay (12a) that will open to disconnect a load (22), such as a common household appliance or utensil, from a power source (20) when the amount of...
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WO/1999/063637A1 |
An electrical safety device comprises a sensor strip (1208) disposed in the insulation (1205) of a wire or in the insulation of a sheath enclosing a bundle (1203) of insulated electrical conductors. The sensor strip comprises a distribut...
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WO/1999/060628A1 |
The invention relates to a power mos transistor with a PMT chip located in a transistor housing. The temperature of the transistor barrier junction is monitored. The aim of the invention is to protect the PMT chip from overloading and po...
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WO/1999/057742A1 |
A circuit protection apparatus includes a circuit breaker coupled in series with a circuit to be protected. The circuit breaker has a trip input and is responsive to a trip signal at the trip input for changing from a closed circuit cond...
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WO/1999/053587A1 |
A leakage current interrupter (Fig. 23) comprising a trip mechanism (178) that operates automatically in response to the presence of a shock hazard condition. Actuation of the trip mechanism (178) automatically interrupts the flow of cur...
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WO/1999/048183A1 |
The invention concerns a direct current electric engine comprising a connecting plate (3) and a card (4) bearing an electronic unit controlling said engine, said card (4) including current monitoring means (13) for detecting when said en...
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WO/1999/033155A1 |
The invention concerns a method for protection of an electrical installation against series fault. The method comprises detection of heat development at specific points in the installation by means of individual sensor/switch units conne...
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WO/1999/030400A1 |
A fault sensing electrical wire (411) utilizes one or more sensor strips (407) which provide an impedance change when the wire is subject to an overtemperature condition or mechanical damage of the wire. A control unit (402) measures the...
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WO/1999/022249A1 |
The invention relates to a method and a measuring unit for verifying the presence of a proper neutral conductor connection between a four wire system and a measuring unit, especially an electricity consumption meter, in a four wire syste...
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WO/1999/019895A1 |
A circuit arrangement for triggering a safety fuse and a process for operating said circuit arrangement are disclosed. The triggering unit (3) is influenced by at least two independent influencing values which act upon the fuse element (...
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WO/1999/009574A1 |
The invention relates to a fuse element for a closed circuit, especially in motor vehicles, comprising a fuse which permanently interrupts the current when the current load exceeds the nominal current. The fuse element contains an additi...
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WO/1999/004474A1 |
A protective arrangement (10) for inclusion in an electric installation system designed to prevent the cause of fire or damage to the installation due to the sudden electrical failure or rise of temperature in the vicinity of the system....
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WO/1999/000882A1 |
The invention concerns a device for managing an electronic component (104) with nominal serviceable voltage functioning under radiation, consisting in: during a control phase, applying to the component (104) an initial supply voltage (11...
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WO/1998/058432A1 |
The invention relates to a method and device for monitoring insulation and fault current in an electrical alternating current network. The differential current formed by vectorial addition is detected between at least two network conduct...
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WO/1998/056095A2 |
Circuit protection systems employing arrangements of PTC devices and mechanical switches. The PTC device is not involved in the circuit until a fault is sensed. In one embodiment, a current sensing relay senses an overcurrent and directs...
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WO/1998/047213A1 |
Several partial discharge measuring probes (4, 5, 6) which detect electromagnetic signals from partial discharges are provided in a high-voltage installation. The corresponding measuring data is fed into an evaluation device (10) with a ...
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WO/1998/045920A1 |
An electrical safety device comprises a sensor strip (123) disposed in the insulation (121) of an electrical power cord (101) or other electrical apparatus. The sensor strip is made of a conductive polymer with a positive temperature coe...
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WO/1998/039753A1 |
A system monitors and controls external utilities interacting with a site to mitigate hazards during disaster or other emergency situations. Upon the occurrence of a disaster or other emergency event, the system disconnects the external ...
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WO/1998/035441A1 |
The invention relates to a controllable switching device comprising at least one switch which has at least one active zone to be protected against electric and/or thermal overload. Said switching device has at least one load circuit and ...
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WO/1998/035419A1 |
The invention relates to a circuit breaker, which is in a fault situation arranged to disconnect an electrical apparatus, such as a distribution transformer, from an average voltage network or a high voltage network at each terminal. At ...
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