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| Number | Title | Issue Date |
| 8072342 | Overcurrent protection circuit An overcurrent protection circuit connected between a voltage input and a voltage output of an electronic device to protect against excessive current is disclosed. The overcurrent protection circuit includes first to fifth resistors, a relay comprising a coil and a ... | 12/06/2011 |
| 7999689 | Household appliance operation sensing and control having a remotely controlled AC power receptacle and AC current sensor Device operation sensing and control apparatus for use in combination with a wireless security panel which communicates with a remote operations center, to facilitate independent at-home living of, for example, semi-autonomous elderly persons. One apparatus embodime... | 08/16/2011 |
| 7956763 | Faulted circuit indicator device having an improved clamping mechanism A faulted circuit indicator device for mounting on an overhead conductor cable for electrical power distribution systems to detect an abnormally high electric current therein includes a housing having an enclosure formed therein and current sensing circuitry for det... | 06/07/2011 |
| 7902992 | Status indicator The sensitivity and accuracy of a status indicator for sensing a current in an electrical circuit is improved by shifting the reference level of the transformer output to maximize the input signal to a precision voltage detector and by reducing the hysteresis of the... | 03/08/2011 |
| 7855655 | Current switch with automatic calibration A current switch is automatically calibrated when a flow of electric current is initiated in a power cable. ... | 12/21/2010 |
| 7696892 | Protection device for an oscillating power circuit A protection device for an oscillating power circuit, namely for a demining coil, such device incorporating circuit breaking means positioned between an alternating current supply network and the power circuit, such device wherein it comprises at least one means to ... | 04/13/2010 |
| 7683798 | Current monitoring device for high voltage electric power lines A current monitoring device (CMD) with a set of electromagnetic field sensors located within one or more grounded housings positioned within the combined electromagnetic fields generated by one or more electric power lines. The CMD includes electronics, typically lo... | 03/23/2010 |
| 7656304 | Method and apparatus for sensing a current in a circuit Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor coupled to an input of the current sense circuit. The current sense resistor is couple... | 02/02/2010 |
| 7633401 | Self-diagnostic system for recliner and lift-chair manual controllers A diagnostic system for use in the electronic control circuit for motor actuated lift and/or recline mechanisms for chair wherein a hand controller is used to operate said lift and/or recline mechanisms, and wherein a series of LED indicators are situated at strateg... | 12/15/2009 |
| 7511628 | Status indicator circuit for a dimmer switch A load control device for controlling the amount of power delivered to an electrical load from an AC power source comprises a semiconductor switch having a control input, a triggering circuit, a timing circuit, and a status indicator circuit. Preferably, the status ... | 03/31/2009 |
| 7439874 | Load status indicator A load status indicator is disclosed for determining whether power is available to, and current is flowing through, a load. A first visual status indicator may light up when power is available to the load but current is not flowing through the load. A second visual ... | 10/21/2008 |
| 7423546 | Device, system and method for monitoring a household electric appliance A device is described, for monitoring a household electric user (COT, LB, AU), in particular a household appliance, presenting an electric load, where said monitoring device (AI) is connected between a source of electric energy (PDC) and said electric load, said mon... | 09/09/2008 |
| 7403129 | Electrical switching apparatus and method employing acoustic and current signals to distinguish between parallel and series arc faults A circuit breaker includes a first lug and second and third acoustic lugs electrically connected to a power circuit. Separable contacts are electrically connected in series between the first lug and the second acoustic lug. An operating mechanism opens and closes th... | 07/22/2008 |
| 7403130 | Removing an automatic circuit recloser from service prior to battery failure An automatic circuit recloser is automatically removed from service prior to battery failure. Logic implemented on the automatic circuit recloser is used to determine whether a battery of the automatic circuit recloser may power operation of the automatic circuit re... | 07/22/2008 |
| 7403106 | Seatbelt apparatus The disclosed detection circuit for a seatbelt apparatus may include an attachment detection switch, first and second resistance elements, and an LED. The resistance value of the first resistance element may be set to a value which allows a current smaller than the ... | 07/22/2008 |
| 7400227 | Fire alarm notification power supply with configurable notification appliance circuits and auxiliary power circuits apparatus and method A power supply for providing excitation to notification appliance circuits (NACs) in fire alarm applications meets revised national and international requirements for both NAC drive and auxiliary load drive tasks with a single circuit configuration. The requirements... | 07/15/2008 |
| 7397384 | Track lighting system current limiting device A current limiting system in accordance with the present invention comprises an accessory or canopy mount device that is permanently installed between a source of electrical power 1 and a track lighting system 2. The system may be installed integrally ... | 07/08/2008 |
| 7391335 | Aerospace light-emitting diode (LED)-based lights life and operation monitor compensator A system (10) and method for monitoring the operational life and/or performance of one or more light-emitting diodes (LEDs) (20) based on sensed parameters are disclosed. The remaining life of each LED may be predicted by counting the clock cycles duri... | 06/24/2008 |
| 7385518 | Compact fused disconnect switch A fused disconnect switch assembly includes a pull out fuse assembly and a switch housing assembly. The fuse assembly includes a line side conducting portion, a load side conducting portion, and a fuse element therebetween. The switch housing assembly includes a fus... | 06/10/2008 |
| 7378977 | Current overload detecting system and method A current overload detecting system and method applicable in a data processing device connected with a plurality of electronic devices is disclosed, each of the electronic devices having a USB interface. The data processing device has a plurality of USB ports corres... | 05/27/2008 |
| 7373278 | Method of latent fault checking a cooling module A method of latent fault checking a cooling module of an embedded computer chassis may include prior to detection of an active fault in the cooling module, performing a fan controller latent fault checking algorithm and a full-speed latent fault checking algorithm. ... | 05/13/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7346981 | Method for fabricating microelectromechanical system (MEMS) devices A process for fabricating a MEMS device comprises the steps of depositing and patterning on one side of a wafer a layer of material having a preselected electrical resistivity; bonding a substrate to the one side of the wafer using an adhesive bonding agent, the sub... | 03/25/2008 |
| 7339458 | Power line communications interface and surge protector There is provided a system that includes an AC power input port for connection to an AC power line, an AC power output port for providing power from the AC power line, an AC power surge suppression circuit for limiting voltage at the AC power output port, a data por... | 03/04/2008 |
| 7336192 | System and device for monitoring at least one household electric user, in particular a household appliance A system that monitors at least a household electric user, in particular a household appliance, includes a monitoring device that is connected between a source of electric energy and the electric user, the monitoring device including a metering means for detecting o... | 02/26/2008 |
| 7336193 | Device for monitoring the leakage current of a surge arrester A device for monitoring a leakage current of a surge arrester has a measuring element for detecting a leakage current in a leakage current circuit. A filter assembly filters the leakage current in order to extract a third harmonic oscillation which is evaluated by a... | 02/26/2008 |
| 7330126 | Power supply controller A power supply controller is used in a device including at least one component and at least one control board for controlling an operation of each component, and includes: a power supply section; and a power supply board for independently supplying a power supply vo... | 02/12/2008 |
| 7327275 | Bathing system controller having abnormal operational condition identification capabilities A controller suitable for identifying an abnormal operational condition in a bathing system is provided. The controller includes a memory unit adapted for storing measurements indicative of electrical currents drawn by the bathing system under normal operating condi... | 02/05/2008 |
| 7326947 | Current transfer ratio temperature coefficient compensation method and apparatus An optocoupler system includes a buffer, isolation, and a detector. The system includes a current transfer ratio (CTR) with a temperature coefficient. The buffer includes a light source that generates light that passes through the isolation. A detector receives ligh... | 02/05/2008 |
| 7323859 | Auto-measuring universal meter An auto-measuring universal meter is disclosed. The auto-measuring universal meter includes a main unit having a display and a single button. A pair of test probes is electrically connected to the main unit in a removable manner to detect a first input signal; an in... | 01/29/2008 |
| 7324006 | Remote display ammeter for power plug or power strip A power strip is providing including a housing coupled to a first end portion of a power supply cord, the housing having an electrical receptacle mounted thereto and connected to the power supply cord, the power supply cord having a second end connectable to a power... | 01/29/2008 |
| 7321312 | Non-volatile fault indication In a computer system a non-volatile fault indicator in a positional relationship with at least one system component is settable to maintain a fault indication for the component after powering down of the computer system. ... | 01/22/2008 |
| 7319304 | Shunt connection to a PCB of an energy management system employed in an automotive vehicle A method of coupling a shunt to a printed circuit board (PCB) of an energy management system is provided. The method includes coupling flexible electrical connectors to the shunt and soldering the flexible electrical connectors to connection points on the PCB of the... | 01/15/2008 |
| 7317400 | Self light emitting type display module, electronic appliance loaded with the same module and verification method of faults in the same module Reverse bias voltage VM is applied to any one of self light emitting elements arranged on a light emitting panel 1 under detection mode. Current corresponding to weak current flowing to the element is supplied to a transistor Q3 by the operation of a c... | 01/08/2008 |
| 7315169 | Microprocessor controlled fault indicator having inrush restraint circuit A fault indicator for indicating the occurrence of a fault in an electrical conductor has a housing, a high capacity battery, at least one light emitting diode (LED) visible from the exterior of the fault indicator upon the occurrence of a fault and which may be aut... | 01/01/2008 |
| 7315251 | Alert for indicating field replaceable unit status and configuration The present invention is a method and system for indicating field replaceable unit status and configuration. A visible alert may be mounted on a card, in proximity to a location for a field replaceable unit. The visible alert may indicate a failed replaceable unit o... | 01/01/2008 |
| 7315255 | Load status indicator A load status indicator is disclosed wherein a green light-emitting diode of a bi-color light-emitting diode lights up when power is available to but not being used by a monitored device, whereas a red light-emitting diode of the bi-color light-emitting diode lights... | 01/01/2008 |
| 7312695 | Apparatus and method for displaying operating characteristics on status indicators A user interface for a load control device allows a user to control an operating characteristic of a load to a plurality of discrete levels. The user interface comprises an adjustment member for allowing the user to select one of the discrete levels and a linear arr... | 12/25/2007 |
| 7310049 | Status indicator A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location. ... | 12/18/2007 |
| 7310048 | Method and apparatus for sensing a current in a circuit Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor coupled to an input of the current sense circuit. The current sense resistor is couple... | 12/18/2007 |
