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Patent Searching and Data


Matches 151 - 200 out of 1,753

Document Document Title
WO/2008/077942A1
A system and a method to determine the impedance of an electrical facility being disconnected from its high or medium voltage power supply. A signal injectionunit injects a test signal at a main frequency between a reference point of an ...  
WO/2008/065471A1
The present invention pertains to a closed loop over-voltage protection for audio/video connection interfaces of devices especially of mobile devices. The over- voltage protection circuit for mobile devices comprising at least one connec...  
WO/2008/061321A1
A method for detecting predetermined fault conditions associated with the supply of AC electrical power to a consumer, the supply having an active conductor and a neutral conductor with the neutral conductor being connected to earth. The...  
WO/2008/055830A1
The invention relates to MOS technology integrated electronic circuits which have to be supplied from a cell or a battery that may have a relatively high voltage liable to destroy the circuit in the event of a battery connection error, m...  
WO/2008/006247A1
An automatic pole includes a mechanical push device and a circuit board device electric-connected with each other. The mechanical push device includes a magnetic inductance device, a contact device, and a housing. The circuit board devic...  
WO/2007/121533A1
A capacitor-based (supercapacitor, ultracapictor or psudeocapcitor) electrical charger (10), rechargeable device (22) and energy storage pack for use with a rechargeable power tool. The rechargeable device (22) includes a storage capacit...  
WO/2007/079924A1
The invention relates to a control circuit used for the control of safety-critical functions of a consumer with an inductive load portion, and to a malfunction monitoring method. The consumer is intended for connection to a direct voltag...  
WO/2007/067865A2
The invention provides a sensor assembly which can sense human tissue in a protected area of a machine. An emitter plate and a plurality of sensor plates are disposed co-planar to each other and adjacent to the protected area of the mach...  
WO/2007/050241A1
A circuit testing closer is capable of closing a power distribution circuit and interrupting the resulting current at the next current zero. Upon detecting a fault, the circuit testing closer is operable to open contacts to isolate the f...  
WO/2007/017073A3
The invention relates to a facility management system or danger warning system comprising a twin-wire annular bus line which is used to supply voltage and to communicate with bus nodes, which are connected to the leads of the annular bus...  
WO/2007/036482A1
A high current end power stage (PA) comprises at least four power transistors (T), two electrical supply lines and at least a safety fuse (S). The at least four power transistors (T) have each a diode (D) which is blocked during normal o...  
WO/2007/017073A2
The invention relates to a facility management system or danger warning system comprising a twin-wire annular bus line which is used to supply voltage and to communicate with bus nodes, which are connected to the leads of the annular bus...  
WO/2006/090333A1
A device includes a main field effect transistor (10) and a sense field effec transistor (12) with common drain and common gate. A controlled current source (30) supplies current to the source (22) of the sense field effect transistor. T...  
WO2006018503A3
The invention relates to a device for piloting an electric motor (20) for driving a mobile conductor element (18) of a power switch connected to a power circuit (28) connected to two terminals (P, M) of an electrical battery pack, especi...  
WO/2006/042450A1
A short circuit breaker against electric shock comprises a microcontroller A, a fault sensing circuit B, an electromagnetic ttrip circuit C, a low voltage supply circuit D, a grounded line circuit PE, and a set of fittings F etc. the bre...  
WO2005091797A3
A method for improving vehicle battery state-of-charge (SOC) for initial vehicle customer delivery is disclosed. The method is focused on vehicle assembly plant practices and ensuring that battery discharge is minimized or eliminated dur...  
WO/2006/018503A2
The invention relates to a device for piloting an electric motor (20) for driving a mobile conductor element (18) of a power switch connected to a power circuit (28) connected to two terminals (P, M) of an electrical battery pack, especi...  
WO/2005/117229A1
The present invention comprises an electronic element (2a), fitted or adapted for an electric circuitry or circuit arrangement (1), where said circuitry inter alia is constituted by a voltage source (1a, 1b), a supply voltage and a curre...  
WO/2005/096465A1
A safety switching module (10) including at least two switch units connected in series and a switch control unit (20) for each switch unit (18). Each switch control unit (20) has a switch control input (38,40) to receive a shut down to o...  
WO/2005/086310A1
An automatic reset device, particularly for residual current-operated circuit breakers and the like, comprising an actuator (10) for automatically resetting a residual current-operated circuit breaker (2) that is connected to an electric...  
WO/2005/055387A1
Disclosed are a circuit system and a method for controlling an inductive consumer, especially protecting the consumer from being accidentally turned on. Said circuit system comprises a free-wheeling circuit (FLK) for reducing energy stor...  
WO2004073003A3
A method of preventing sudden inadvertent operation of a motor of a tool or appliance when the motor is initially electrically connected to a power source While an On/Off switch for controlling the motor is in a closed position. The meth...  
WO/2005/039935A1
Disclosed is a circuit arrangement (11) for a motor vehicle, comprising a functional zone (4) which effects the main functions of the circuit, a polarization device (2) that protects the functional zone (4) from polarity reversal of the ...  
WO/2005/039069A1
A communication circuit is realized which uses three wires, including a power supply, to provide an erroneous-connection protection, a long wiring, and a high-rate transmission. In a communication system using, as a shared wire, one of t...  
WO/2005/011079A1
The present invention relates to an arrangement (7) for protecting an electrical device. According to the invention, said device is connected to a pole (3) of a battery (1) by means of a pole terminal (4). A protection contact unit (9) h...  
WO2004075390A3
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...  
WO/2004/112212A1
A method and a device for preventing the unintentional connection of one or more apparatuses (10, 12, 14) located preferably in a well (8), wherein two or more apparatuses (10, 12, 14) are connected by means of respective switches (16, 1...  
WO/2004/102762A1
A safety device for electric equipments, which is aimed to get over the defects in the prior art, can monitor roundly the ground, the live line and the neutral line, and can prevent from reversing connection between the live line and the...  
WO/2004/100336A1
An intelligent automatic bypass for a motor control device determines if a fault that is occurring in the motor control device is a restricted or non-restricted fault. A restricted fault is one that may damage or destroy the motor if an ...  
WO/2004/088812A1
A protection device for three-phase electrical equipment is provided that comprises a voltage sensor (8a, 8b, 8c) for each phase; a phase sensor (10a, 10b, 10c) for each phase; and control circuitry (7) operated by an output from the vol...  
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...  
WO/2004/073003A2
A method of preventing sudden inadvertent operation of a motor of a tool or appliance when the motor is initially electrically connected to a power source While an On/Off switch for controlling the motor is in a closed position. The meth...  
WO/2004/066466A1
An electrical lockout mechanism (1) is connected between a power source, and a power input terminal of an electrical machine including a manually operated switch. A switching element of said electrical lockout mechanism (1) receives a co...  
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/2003/073579A1
An apparatus for preventing an accident of inputting an unadaptable AC power supply erroneously to a rectifying means by providing means for selecting a rectifying means being inputted with an AC power supply inputted to a power supply u...  
WO/2003/071650A1
The invention relates to a device for reducing peak loads in motor vehicle electric systems, comprising at least two high-current consumers. Current requirements can be extrapolated from the status data of the high-current consumers, whe...  
WO/2003/055281A1
An electronic ballast for at least one gas discharge lamp (LA), preferably for fluorescent tubes, comprising a rectifier circuit (2) which can be connected to a supply voltage source, a smoothing circuit (3) which is connected to the out...  
WO/2003/052896A1
The invention relates to a polarity protection circuit, which is used in a power supply arrangement where a power supply (101, 107) is connected via supply voltage lines to a load (116, 117). The polarity protection circuit further conta...  
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...  
WO/2003/017460A1
The invention relates to a device and a method for monitoring the connection of an electrical supply unit comprising voltage detection (32) detecting phase voltage (14), current detection (32) detecting phase voltages (38), a transformat...  
WO/2003/012970A1
A method and apparatus for controlling power supplied to a motor (60), comprising a power controller (58) having a source of electrical power (52) for providing the necessary power to operate the apparatus (50), an oscillator (56) for ge...  
WO2002001694A3
The invention relates to an electronic circuit for an energy supply device (1), especially for a charging device (2) for batteries (3). The energy supply device (1) is connected to an energy source (6) by input terminals (4, 5). Said ene...  
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/2002/001702A1
The invention relates to a circuit arrangement comprising two input terminals (A1, A2) for connecting a drive voltage (U¿in,DC/AC?) and two output terminals (Q1, Q2) for connecting a load (L). The two inputs (A1, A2) of the circuit arra...  
WO/2002/001694A2
The invention relates to an electronic circuit for an energy supply device (1), especially for a charging device (2) for batteries (3). The energy supply device (1) is connected to an energy source (6) by input terminals (4, 5). Said ene...  
WO/2001/078208A1
A method for protecting a DC generator against overvoltage in the event of a loss of load. A voltage limit value is defined and, when starting the current generator, one or a few small current pulses are generated during an initial phase...  
WO/2001/066397A1
A method and apparatus for diagnosing short circuit conditions in a circuit protects circuit components from being damaged during a diagnostic operation. The apparatus includes a control processor, a control circuit coupled to the contro...  
WO/2001/061818A1
A protective device (10) for use with DC-powered electrical equipment (14) and including a main electrical switch (16) in series along at least one DC power supply line (18), and a series combination of a secondary electrical switch (22)...  

Matches 151 - 200 out of 1,753