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Match Document Document Title
US20150016007 Safety Relay Circuit  
Safety relay circuit, in particular, comprising two series-connected or parallel-connected relay switches (k1, k2) in a load current circuit (LN). The relay switch (k1) is assigned a switch...
US20100302052 INTELLECTUALIZED POLARITY IDENTIFICATION DEVICE  
The invention involves an intellectualized polarity identification device which comprises an electromagnetic module connected with a control circuit. The electromagnetic module comprises a...
US20110116201 LIGHT ACTIVATED HOLD SWITCH  
An automatic hold switch is disclosed. The automatic hold switch provides a means for automatically switching a hold feature on and off. When the hold feature is on, one or more input devices of a...
US20130222966 DIP SWITCH CHANGE DETECTION IN A SELF POWERED RELAY  
An interface is disclosed for a self powered protection relay that uses mechanical switches for its configuration. The protection relay can include a base relay for measurement of line current and...
US20150254954 Smoke Detector with Airflow Barrier  
A smoke detector system that includes an airflow barrier installed between a detector base unit and a mounting surface to ensure there is separation between the detector base unit and the mounting...
US20110194224 Control Circuit for Electric Unlocking Devices Using Actuating Solenoids  
A system and method is provided for an enhanced and user friendly control circuit for an electric unlocking device, such as for example, an electric door strike or other unlocking devices...
US20130229743 ENERGY EFFICIENT POWER ADAPTER  
According to one embodiment, an AC power adapter for providing voltage to an electrically-operated device includes a power converter module electrically coupled to a power source via at least one...
US20130342950 Systems and Methods for Determining Actuation Duration of a Relay  
An example system for determining the actuation duration of a relay can include a relay, a current-sensing device, and a controller. The relay can have an actuation coil, and armature, and a first...
US20130235503 HUMAN-MACHINE INTERFACE FOR A SELF-SUPPLIED RELAY  
A design of a protection relay, and interface with an operator of a protection relay, are disclosed. The protection relay can include a base relay for measurement of line current and for...
US20120023060 ELECTRONIC DEVICE WITH AUTOMATIC MODE SWITCHING  
An electronic device for predicting or anticipating a user's operational desires. The electronic device is ready to perform the anticipated function without input from the user by using sensors to...
US20140071577 RELAY FOR AUTOMATICALLY SELECTING A MONITORING RANGE  
A relay for automatically selecting a monitoring range for monitoring a parameter of an input source and a method for monitoring a parameter of an input source can be provided whereby the relay...
US20150200068 UNIT FOR CONTROLLING ELECTROMAGNETIC RELAY, AND METHOD FOR CONTROLLING ELECTROMAGNETIC RELAY  
A unit for controlling one or more electromagnetic relays, each having a contact point and an exciting coil to which rated power is supplied so as to open and close the contact point, has a...
US20140104740 SWTICHING PHASE OFFSET FOR CONTACTOR OPTIMIZATION  
A system and methods providing for minimizing the arc energy delivered to the pads of a plurality of contactors using a single control coil based on monitoring the electrical sine waves of the...
US20080170347 Apparatus for Switching a Cook Top and Method for Assessing Faulty Operation of a Cook Top  
An apparatus for switching a cook top having at least one cooking area, includes a clocking relay for clocking operation of a heating device of a cooking area, a control device for driving the...
US20110184578 Self Optimizing Electrical Switching Device  
A device for operating a relay to selectively provide power from a power supply to a load. The device determines an activation switching point for activating the relay such that inrush current...
US20140002946 ELECTROMAGNETIC OPENING/CLOSING DEVICE  
A malfunction determining unit 7 compares an absolute value of the difference between a first count and a second count stored in a storage unit 8 with a predetermined threshold. If the absolute...
US20090147413 ELECTRIC APPLIANCE AND HEATING COOKING DEVICE  
A purpose of the present invention is to avoid either earth leakage or an electric shock, and is to reduce power consumption during a standby mode. An electric appliance comprises: an appliance...
US20110187542 RADIO FREQUENCY NOTIFICATION SYSTEM AND METHOD  
A notification system including an electrical switch wherein the switch includes a radio frequency receiver circuit coupled to a power supply and the RF receiver circuit, in response to an alarm...
US20090062976 DUEL CONTROL SOLENOID CIRCUIT  
A solenoid control system for a vehicle comprises a primary controller, a failover controller, and a failover control module. The primary controller generates a first solenoid drive signal based...
US20150070808 Switched Power Distribution Unit  
Systems, methods, and apparatuses are provided in which power control relay switches may be configured to switch at or near a predetermined time during an AC cycle and/or that are configured to...
US20100036542 SYSTEM FOR SETTING A POSITIONING MEMBER  
In a system or method for setting a positioning member, a pneumatic positioning drive actuates the positioning member, the pneumatic positioning drive having at least two control positions and a...
US20090147427 BATTERY DISCONNECT DEVICE  
A battery disconnect device for a motor vehicle and the like includes a housing with a monitor circuit and a sealed relay. The monitoring circuit senses various conditions, such as current drawn...
US20150055269 METHOD AND APPARATUS FOR RESTORING MECHANICAL RELAY FROM STUCK FAULT TO NORMAL CONDITION  
Disclosed herein are a method and apparatus for restoring a mechanical relay from a stuck fault to a normal condition. The method may include detecting, by an MCU, a short state or open state of a...
US20100085676 NESTED PULSE WIDTH MODULATION CONTROL  
A PWM control circuit includes a first PWM driver, a duty cycle compensator, and a second PWM driver. The first PWM driver receives duty cycle commands and generates a first PWM driver signal...
US20110205682 HYBRID POWER RELAY USING COMMUNICATIONS LINK  
A control circuit for controlling an arc suppression circuit includes a serial communication link communicating a serial signal therethrough. The control circuit includes a microprocessor having a...
US20140340808 DRIVE DEVICE FOR OPENING/CLOSING BODY  
An opening/closing-body drive device is achieved, in which a malfunction, caused by the electrical contacts of the relay switch freezing, can be reliably prevented from occurring. The control unit...
US20100157502 System for decoupling a power source from a load  
A relay switch decoupler is disclosed. The relay switch decoupler may include a first contact, and a second contact selectively coupled to the first contact. The relay switch decoupler may further...
US20120057266 SYSTEMS AND METHODS FOR INDEPENDENT SELF-MONITORING  
An Intelligent Electronic Device (IED), such as a protective relay, may monitor and/or protect an electrical power system by detecting fault conditions using stimulus inputs from the electrical...
US20120176719 TRIP UNIT PROVIDING REMOTE ELECTRICAL SIGNAL TO REMOTELY INDICATE THAT AN ARC REDUCTION MAINTENANCE MODE IS REMOTELY ENABLED, AND ELECTRICAL SWITCHING APPARATUS INCLUDING THE SAME  
An electrical switching apparatus includes separable contacts; an operating mechanism structured to open and close the separable contacts; and a trip mechanism cooperating with the operating...
US20110273813 Leak Detection and Leak Protection Circuit  
A leak detecting and leak protecting circuit comprises a rectification circuit comprising positive and negative power output ends, current limiting resistors, a diode, a silicon control comprising...
US20100296221 PROTECTIVE RELAY AND HUMAN-MACHINE INTERFACE THEREFOR  
A fully operational digital protective relay or Intelligent Electronic Device (IED) are provided for protecting electrical equipment of a power distribution system. The relay includes an input...
US20090296304 Switch  
A switch is obtained in which whether the counting of the number of operations is performed in accordance with an on-operation counting method or an off-operation counting method can readily be...
US20120099239 CONFIGURABLE SOLENOID ACTUATION METHOD AND APPARATUS  
A configurable, connectorized method and apparatus for driving a solenoid coil reduces energy consumption and heating of the solenoid coil, allows detection of the solenoid state, and simplifies...
US20100226160 Power Generation System and Inverter for Feeding Power Into a Three-Phase Grid  
A power generation system for feeding electrical power from a generation unit into a three-phase grid via three AC terminals is disclosed. The system includes a relay arrangement for disconnecting...
US20090027824 Current Zero Cross Switching Relay Module Using A Voltage Monitor  
Assemblies, systems, and methods which prolong relay life by dynamically compensating the make and break contact timing between the contact points of the relay and a zero crossing point of the...
US20100060293 DEVICE FOR DETECTING THE FAILURE OF AN ELECTRICAL POWER SUPPLY FOR A LOGIC UNIT  
An electrical power supply device for a logic unit (1), includes a control member (7) that can transmit a control voltage (6), a power relay (3), transmitting a power voltage (2) when it is...
US20090026397 System, apparatus and method for controlling valves  
Systems, apparatuses and methods for controlling valves through controlled power escalation towards the actuation threshold of the valve. A power signal is applied to a control input of a valve at...
US20140211362 DEVICE CONTROL MODULES FOR DEMAND MANAGEMENT SYSTEMS  
A device control module for making a non-demand management system capable electrical device demand responsive to a demand management system includes a relay configured to be electrically connected...
US20140334056 ELECTRIC CHARGING APPARATUS AND FAILURE DETERMINATION METHOD THEREFOR  
An electric charging apparatus and a failure determination method therefor are provided. In the electric charging apparatus, a relay allows a current to flow inside the electric charging apparatus...
US20150018171 CONTROL DEVICE AND CONTROL METHOD FOR SOLENOID VALVE  
A control device for a solenoid valve that controls a solenoid valve included in a hydraulic control device using a control signal set through feedback control such that an actual current that...
US20090134715 Switching system  
The switching system for reducing standby power consumed by an electrical device includes a remote control device configured to selectively emit a radio frequency signal and a switching apparatus...
US20090212729 Method and device for controlling load and voltage in voice coils  
A method for sensing and compensating for variances in load and voltage in a closed loop voice coil system (95) is described. A load (55) in a system (95) which included a supply voltage (45) and...
US20110141648 ELECTRICAL SAFETY DEVICES AND SYSTEMS FOR USE WITH ELECTRICAL WIRING, AND METHODS FOR USING SAME  
Disclosed are systems and methods for monitoring an electrical flat wire. An appropriate safety device is utilized to monitor the electrical flat wire. The safety device includes a line side input...
US20130148251 RELAY CONTROL SYSTEM FOR ELECTRIC VEHICLE AND METHOD FOR CONTROLLING RELAY OF ELECTRIC VEHICLE  
A relay control system for an electric vehicle includes an electric power line, a relay, an operation member, a state sensor, a rotational speed detector, a shift position detector, and a relay...
US20150138685 PROTECTION MODULE FOR CONTROL AND PROTECTIVE SWITCHING DEVICE  
The present invention discloses a protection module for a control and protective switching device, comprising a control power supply processing unit, an auxiliary power supply processing unit, a...
US20170154746 SWTICHING PHASE OFFSET FOR CONTACTOR OPTIMIZATION  
A system and methods providing for minimizing the arc energy delivered to the pads of a plurality of contactors using a single control coil based on monitoring the electrical sine waves of the...
US20170144554 METHODS OF OPERATING CONTACTORS IN HIGH VOLTAGE CIRCUITS OF VEHICLES  
Methods of controlling a contactor in a high voltage electrical circuit of a vehicle include delaying a contactor opening if a valid open command is not received, inhibiting closing of a contactor...
US20170138292 System and Method for a Synchronized Driver Circuit  
According to an embodiment, a controller system that is configured to drive a power switch includes a driver integrated circuit (IC), which includes an interface circuit, a synchronization...
US20170053760 SELF-LEARNING RELAY TURN-OFF CONTROL SYSTEM AND METHOD  
An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected...
US20170004944 CONSTANT VOLTAGE SUPPLYING CIRCUIT FOR CIRCUIT BREAKER  
The constant voltage supplying circuit for a circuit breaker according the invention comprises: a first switching device; a constant current source configured to supply a constant current; a...

Matches 1 - 50 out of 60 1 2 >