Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 401 - 450 out of 4,779

Document Document Title
WO/2004/038882A1
The protective circuit for analog sensors has transistors (T1, T2) respectively located in a power supply voltage line (6) and in a ground line (8). The control electrode of said circuit is located between the supply voltage and the grou...  
WO/2004/034541A1
An electrical power supply includes a power input interconnected with a power source that supplies input power having a voltage exceeding a predetermined voltage threshold, e.g. a low voltage threshold. A power conversion arrangement con...  
WO/2004/034542A1
A secondary battery (101) arranged such that a thermal element (133) exhibiting a resistance changing dependent on temperature variation is removed from a passage that the charge/discharge current of a power storage unit (111) runs, an a...  
WO2002017456A8
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...  
WO/2004/030172A1
According to the invention, a temperature pattern (7) representing a current operating situation is derived from and classified by means of measured temperature values and/or other temperature information related to the technical install...  
WO/2004/030171A1
A protective arrangement in a device that protects the device and personnel or users of the device when undesirable conditions develop within the device. The protective arrangement de-couples a power source from the device, prevents acce...  
WO/2004/025798A1
A self-contained alarm device for monitoring the supply status of a monitored electrical appliance for connection in the supply line from the network to the appliance characterised in that it has no internal power source or battery and i...  
WO/2004/008500A2
A protection apparatus for a semiconductor device includes a DC power source (VB), a load/RL), a semiconductor device arranged between the DC power source and the load and switches the load between a driving state and a stopping state, a...  
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 (...  
WO/2003/105304A1
A device called shock element (K. Σ.), externally similar to the usual overcurrent protective breakerof (table), containing a shock sensor and a resistance (R) (fig. 5a, fig. 5b, fig. 6), is placed in the electric panel and it is connec...  
WO/2003/098763A1
The modified Buchholz relay (2) overcomes the problem with existing relays which alarm once when full of gas and cannot provide further information unless the gas is discharged out of the relay manually. The modified Buchholz relay allow...  
WO/2003/077397A1
The invention relates to a heating device comprising an electrical heat conducting arrangement (1.1), which is integrated inside a flexible heating body (1) and which can be connected to a supply voltage (UV) via a connecting cable. Said...  
WO/2003/061091A1
The present invention relates to an electronic switch for AC currents realised only with solid state components and comprising a main bipolar or unipolar switch circuit to switch the ac current from ac line to a load, at least a current ...  
WO/2003/061089A1
The invention concerns a safety device for at least one electrical apparatus (1), apt to be electrically supplied by a mains (4) through at least one power supply cable, comprising sectioning means (5) connected between the mains (4) and...  
WO/2003/043158A1
An apparatus (100) for detecting leakage current from an electrical appliance (250) is disclosed. The apparatus (100) includes a chassis (260), an electrical fitting (188, 190) and a detection circuit (200). The electrical fitting (188, ...  
WO2002095894A8
Device for the survey of temperature variations in a direct current electrical installation, comprising a first temperature sensor (2) for the survey of the temperature of an electric circuit, a first displaying device (5) for displaying...  
WO/2003/026092A1
A safety device reliably cuts off the drive current of an electric apparatus in response to various abnormalities by combination with a normally used current breaker. For example, a current breaker which senses flood or leakage is arrang...  
WO/2003/007450A1
In order to recognise an electric arc (L) in a 42V vehicle electrical system and initiate suitable protective measures, a detection line is at least partially guided along a current -conducting supply line (6) for the protection thereof,...  
WO2002095894A3
Device for the survey of temperature variations in a direct current electrical installation, comprising a first temperature sensor (2) for the survey of the temperature of an electric circuit, a first displaying device (5) for displaying...  
WO/2002/095894A2
Device for the survey of temperature variations in a direct current electrical installation, comprising a first temperature sensor (2) for the survey of the temperature of an electric circuit, a first displaying device (5) for displaying...  
WO/2002/092941A1
The invention relates to an internal vibrator (20) for compacting concrete, comprising a vibrator housing (21a) in which a rotational unbalance mass, an electric motor (2) powering said unbalance mass and part of a power line (26) connec...  
WO/2002/063648A1
An electrical safety outlet (15) for accepting a plug (30) to provide power to electrical appliances including a power supply (70,71) and an intelligent circuitry (100) for controlling the power supply to the electrical outlet (15); the ...  
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...  
WO2002015392A3
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...  
WO/2002/043932A1
Electronic control circuit 10 controls the application of power from a motor 14 to a shearing hand piece 12. The circuit 10 includes a capacitive bridge circuit 16 having a first arm 18 electrically coupled with the shearing hand piece 1...  
WO2001067418A3
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...  
WO2002017456A3
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...  
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...  
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...  
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...  
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...  
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...  
WO2001045224A3
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 R1, R2 are located...  
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...  
WO2001015183A3
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 ...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO2000014456A8
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...  

Matches 401 - 450 out of 4,779