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| Number | Title | Issue Date |
| 8116050 | Semiconductor integrated circuit To provide a semiconductor integrated circuit including: a detection circuit that detects an occurrence of latch up and can be configured while adopting a layout configuration that suppresses the occurrence of latch up; and a recovery unit that enables a recovery fr... | 02/14/2012 |
| 8064178 | Method and apparatus for balancing current through an interrupt device Systems and methods are provided for balancing current through a first conductor and a second conductor. A method comprises determining if a first current through the first conductor is greater than a second current through the second conductor by more than a thresh... | 11/22/2011 |
| 7433165 | Auto-resetting span-power protection Systems and methods for auto-resetting span power protection are provided. In one embodiment, a method for deactivating a protective device is provided. The method comprises determining when an overload condition occurs on a communication medium; when the overload c... | 10/07/2008 |
| 7414867 | Power conversion device An insulated gate bipolar transistor and a protective circuit are incorporated. The protective circuit has first and second Zener diodes connected in series in directions opposite to each other between the gate and the current sense terminal of the insulated gate bi... | 08/19/2008 |
| 7337081 | Metering device with control functionality and method thereof A metering device of a power substation and method are provided for operating on a secondary analog waveform output by a transformer assembly receiving a primary waveform. The method includes stepping down the secondary waveform and generating a corresponding output... | 02/26/2008 |
| 7317604 | Over-current protection device An over-current protection device is constituted of a current detection unit for detecting a current from a power-supply source to a load having a magnetism detection element with a magnetic impedance (MI) effect, an AC-current supply device for supplying an AC curr... | 01/08/2008 |
| 7298601 | Over-voltage protection for voltage regulator modules of a parallel power system A protection circuit for a parallel power system having at least two parallel coupled voltage regulators is disclosed. The protection circuit includes at least two isolation control circuits, each control circuit being coupled to a respective voltage regulator. Each... | 11/20/2007 |
| 7286332 | Apparatus for protecting bicycle electrical components An electrical control apparatus comprises a current sensor and a current inhibiting circuit that inhibits current flow between first and second terminals of a bicycle dynamo when current sensed by the current sensor is below a selected value. ... | 10/23/2007 |
| 7280335 | Protection circuit and method for protecting a switch from a fault A protection circuit for protecting a switch from a fault includes a first sensing circuit and a second sensing circuit. The first sensing circuit senses a low-side load current through a switch that includes a first terminal, a second terminal and a control termina... | 10/09/2007 |
| 7274548 | Abnormal current determining method, electronic apparatus, and computer program of same A cellular telephone 1 measures a current value after being turned on, and performs addition and subtraction of a predetermined margin to and from the measured value, and thereby sets up determination thresholds for an overcurrent and an undercurrent, namely,... | 09/25/2007 |
| 7267430 | Heater chip for inkjet printhead with electrostatic discharge protection An inkjet printhead heater chip includes a resistor layer, a dielectric layer on the resistor layer and a cavitation layer on the dielectric layer. A grounded-gate MOSFET electrically attaches to the cavitation layer to protect the dielectric layer from breakdown du... | 09/11/2007 |
| 7265952 | Two-terminal protecting circuit An integrated circuit provides a load with back-flow and open-circuit protection and includes a load, a trigger circuit, and a shunt circuit. The integrated circuit provides large-size LED displays having series LED connection with back-flow and open-circuit protect... | 09/04/2007 |
| 7257466 | Intelligent control devices A control device operates to selectively provision power. The control device can be implemented as part of an electrical apparatus, such as a computer, television, VCR, hairdryer or other device which operates on AC power. The control device can be also implemented ... | 08/14/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 7214985 | Integrated circuit incorporating higher voltage devices and low voltage devices therein An integrated circuit formed on a semiconductor substrate and configured to accommodate higher voltage devices and low voltage devices therein. In one embodiment, the integrated circuit includes a transistor having a gate located over a channel region recessed into ... | 05/08/2007 |
| 7203047 | Combination current sensor and relay A protection device for monitoring current in a power cable to an electrical device and for controlling a remotely located starter for the electrical device in response to a system controller. The device includes a transformer magnetically linked with the power cabl... | 04/10/2007 |
| 7193829 | Combination current sensor and relay A protection device for monitoring current in a power cable to an electrical device and for controlling a remotely located starter for the electrical device in response to a system controller. The device includes a transformer magnetically linked with the power cabl... | 03/20/2007 |
| 7189319 | Axial current meter for in-situ continuous monitoring of corrosion and cathodic protection current First and second axial current meters (ACM) are mechanically connected to a well casing just above and below a corrosive zone and a master axial current meter (MACM) is connected to the casing at the earth's surface, the MACM periodically obtaining measurements of a... | 03/13/2007 |
| 7190563 | Electrostatic discharge protection in a semiconductor device An electrostatic discharge (ESD) protection circuit for protecting a circuit from an ESD event, the ESD protection circuit comprises a metal-oxide semiconductor (MOS) device including a gate terminal, a first source/drain terminal, a second source/drain terminal and... | 03/13/2007 |
| 7151656 | Arc fault circuit interrupter system A system for determining whether arcing is present in an electrical circuit in response to a sensor signal corresponding to current in the circuit includes a circuit for analyzing the sensor signal to determine the presence of broadband noise in a predetermined rang... | 12/19/2006 |
| 7136265 | Load recognition and series arc detection using bandpass filter signatures A method and system for determining whether arcing is present in an electrical circuit includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband n... | 11/14/2006 |
| 7113379 | DC-DC converter A switching power supply unit includes an overcurrent protection circuit section and a latch-stop release signal output circuit section. The overcurrent protection circuit section performs an overcurrent protection operation for latching and stopping the switching o... | 09/26/2006 |
| 7079365 | Electrical fault detection system A microcontroller-based system to detect ground-fault and grounded-neutral conditions in a monitored circuit of an electrical distribution system having line and neutral conductors. The system includes a single sensor producing an output signal responsive to current... | 07/18/2006 |
| 7068480 | Arc detection using load recognition, harmonic content and broadband noise A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined ran... | 06/27/2006 |
| 7064392 | Semiconductor device In an N-channel type field effect transistor constituting an input/output protection circuit, an N-type well 1a with a lower dopant concentration than the source region 3c is formed under the source region 3c. ... | 06/20/2006 |
| 7058526 | Method, apparatus and computer program product for implementing enhanced power system with optimized fuse placement and sizing A method, apparatus and computer program product are provided for implementing power system performance. Power supply system data are processed and a power path in a power supply system having a predefined component failure mode is identified for placement of a fuse... | 06/06/2006 |
| 7035066 | Arc-default detecting circuit breaker system An arc-fault detecting circuit-breaker system is operable with a protected electrical circuit that operates with direct current or alternating current. A normally closed line circuit breaker has an electrical input and an electrical output, and an electrical line co... | 04/25/2006 |
| 7031131 | Overload current protection apparatus A current sensor which constitutes an overload protection apparatus and senses a current supplied from a power source to a load is constituted by providing a magnetic sensor having the effect of magnetic impedance (MI), an AC supply means which impresses AC on this ... | 04/18/2006 |
| 7012792 | Semiconductor integrated circuit A semiconductor integrated circuit of the present invention has an output field-effect transistor formed on a main surface of a semiconductor substrate; an overcurrent detection circuit detecting an overcurrent of the output field-effect transistor; and an overcurre... | 03/14/2006 |
| 6958921 | Push/pull-type control signal generating circuit and method thereof A push/pull-type control signal generating circuit outputs two control signals to control directly and drive switching actions of two electronic switches of a push/pull-type circuit architecture. The push/pull-type control signal generating circuit has a first AND-g... | 10/25/2005 |
| 6950292 | Combination current sensor and relay A protection device for monitoring current in a power cable to an electrical device and for controlling a remotely located starter for the electrical device in response to a system controller. The device includes a transformer magnetically linked with the power cabl... | 09/27/2005 |
| 6927546 | Load control system and method A load control systems and methods. One embodiment of a load control system comprises at least two triac devices connected in parallel to a load, the at least two triac devices operable to deliver current to the load. At least one driver circuit is linked to the at ... | 08/09/2005 |
| 6927988 | Method and apparatus for measuring fault diagnostics on insulated gate bipolar transistor converter circuits A method for diagnosing faults using a load. In the method IGBTs are controlled such that certain currents are expected. If the currents are not as expected, a fault may be diagnosed. ... | 08/09/2005 |
| 6909619 | Spike control apparatus for DC-DC converter There are disclosed a synchronous rectifying type of DC—DC converter, a DC—DC converter control circuit constituting such a type of DC—DC converter, a monitor circuit for monitoring an operation of a DC—DC converter, and an electronic equipment having a DCâ€... | 06/21/2005 |
| 6906900 | Structure and method of thermally protecting power devices for airbag deployment System and method protects power drivers (10) and (12) that are used for airbag deployment. Temperature sensors (38) are strategically located on the integrated circuit (36) to detect temperature levels in power drivers (10) and ( | 06/14/2005 |
| 6816758 | Programmable controller for remotely controlling input power through a switch to a load and an associated method of operation A programmable controller is provided that is capable of interfacing with a remote master controller, where the programmable controller is capable of controlling an input current to at least one load that is proximate the programmable controller. The programmable co... | 11/09/2004 |
| 6816349 | Integrated power switch with current limit control and a method of use An integrated power switch is disclosed. The power switch comprises a power transistor for providing an output current. The power transistor includes a grounded body. The power switch includes a sense transistor coupled to the power transistor. The sense transistor ... | 11/09/2004 |
| 6760437 | Analog modem overcurrent protection An overcurrent protection circuit for an analog modem which uses passive-device features during normal operation to minimize modem signal noise and distortion, and active-device features when inadvertently connected to a line having excessive line current. ... | 07/06/2004 |
| 6741437 | Safety device for electrical storage cell battery and battery equipped with the device A safety device for a battery of electrical storage cells composed of modules connected in series each including a storage cell or a group of storage cells connected in parallel. A circuit individually short circuits a module if it should fail and maintains the elec... | 05/25/2004 |
| 6693782 | Surge suppression for current limiting circuits A limiting circuit for controlling overshoot in a charge current in a battery recharging system includes a current amplifier receiving input indicative of charge current in a rechargeable battery circuit and generating a current error signal, a voltage am... | 02/17/2004 |
