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38results about How to "Large voltage drop" patented technology

Integration of very short electric pulses for minimally to noninvasive electroporation

The present invention provides methods, devices, and systems for in vivo treatment of cell proliferative disorders. The invention can be used to treat solid tumors, such as brain tumors. The methods rely on non-thermal irreversible electroporation (IRE) or supra-poration to cause cell death in treated tumors. In embodiments, the methods comprise the integration of ultra-short electric pulses, both temporally and spatially, to achieve the desired modality of cell death.
Owner:VIRGINIA TECH INTPROP INC

System for scheduling battery charge and discharge in a reconfigurable battery

Effective scheduling of battery charge and discharge activities, by making the most of battery characteristics, can extend the battery pack's operation-time and lifetime. A system and method for scheduling battery activities is disclosed. This framework dynamically adapts battery activities to load demands and to the condition of individual battery cells, thereby extending the battery pack's operation-time and making them robust to anomalous voltage imbalances. The scheduling framework includes two components. An adaptive filter estimates the upcoming load demand. Based on the estimated load demand, a scheduler can determine the number of parallel-connected battery cells to be discharged. The scheduler also effectively partitions the battery cells in a pack, allowing the battery cells to be simultaneously charged and discharged in coordination with a reconfigurable battery circuit.
Owner:RGT UNIV OF MICHIGAN

Light-emitting display and method of manufacturing the same

A light-emitting display capable of maintaining low power consumption and improving display quality irrespective of the configuration of an auxiliary wiring is provided. A second electrode 20 and an auxiliary wiring 18B are electrically connected to each other through a conductive contact section 15B. Moreover, only a part of the auxiliary wiring 18B is connected to the contact section 15B. Even if the surface of the auxiliary wiring 18B is oxidized, an increase in connection resistance is prevented. Moreover, a restriction on layout is not imposed at the time of forming the contact section 15B.
Owner:JOLED INC

Circuit for detection and control of LED string operation

A circuit is disclosed for determining which of a multiplicity of LED strings in an illumination system has a fault. A group of circuits determines the maximum, minimum, midpoint between maximum and minimum, and average voltage of the group of LED string voltages in use, and examines the statistical properties of the LED string voltages. Comparators are used to find the strings which have the highest and lowest operating voltages, and to compare the midpoint and average voltages to determine whether the highest or lowest voltage string is responsible for causing a fault in the illumination system operation. Memory means are used to keep the said determined string turned off to prevent faulty operation.
Owner:MICROCHIP TECH INC

Superconducting FCL using a combined inducted magnetic field trigger and shunt coil

A single trigger / shunt coil is utilized for combined induced magnetic field triggering and shunt impedance. The single coil connected in parallel with the high temperature superconducting element, is designed to generate a circulating current in the parallel circuit during normal operation to aid triggering the high temperature superconducting element to quench in the event of a fault. The circulating current is generated by an induced voltage in the coil, when the system current flows through the high temperature superconducting element.
Owner:SUPERPOWER INC

Radio Communication Terminal

A radio communication terminal has a plurality of matching circuits that optimize the efficiency of a power amplifier for a range of different battery voltages. A first matching circuit optimizes the efficiency of the power amplifier for a battery voltage higher than a predetermined threshold value. A second matching circuit optimizes the efficiency of the power amplifier at a voltage lower than the threshold value. A control section compares a detection result of a battery voltage from a voltage monitor section with the threshold value, and performs switching between the plurality of matching circuits.
Owner:SONY MOBILE COMM INC

Signal-level based control of power grid load systems

The present invention relates to a load control system in which a power cable of a DC or AC is used for on / off control and dimming of connected load devices without adding significant hardware structure. The control is achieved through a change in the DC or AC bus voltage. A grid controller can perform on / off control and dimming for an entire group of connected load devices by changing the bus voltage. Connected load devices that do understand or want to make use of this feature will be unaffected. In order to reduce the effects of voltage drop, a calibration procedure is provided. The calibration procedure first triggers the connected load devices into a calibration mode and then initiates a number of predefined output level commands that allow the load devices to build an individual correction for the undesired voltage drop.
Owner:SIGNIFY HLDG BV

Belt welding apparatus and method

Apparatus and method are disclosed for the welding of thermoplastic endless belts (28). Direct current is passed through a ni-chrome wire (27) to produce enough heat such that the thermoplastic melting point of the belt material is reached. The wire is mechanically moved through the abutting thermoplastic belt. The free ends being welded are securely held together with clamping members (2) and (4). In another embodiment a ni-chrome ribbon (54) is embedded in an electrically insulated screen to produce a heated planar surface. The invention is particularly suitable for the welding of polyurethane thermoplastic belts. Because the invention is hand held and it uses battery power, it is especially adapted for welding belts in the food processing industry.
Owner:ACORS RONNIE B

Organic electroluminescent display panel and display apparatus

The present invention discloses an organic electroluminescent display panel, comprising: a base substrate; a top-emitting type organic electroluminescent structure located on the base substrate, the organic electroluminescent structure comprising an anode, a light emitting layer and a cathode arranged in this order from the base substrate; and a packaging film covering the organic electroluminescent structure; the organic electroluminescent display panel further comprises a secondary electrode provided on the packaging film and electrically connected with the cathode through a via hole penetrating through the packaging film. Since the secondary electrode is additionally provided on the packaging film and is electrically connected with the cathode through the via hole penetrating through the packaging film, the secondary electrode electrically connected with the cathode can increase an equivalent thickness of the cathode and thus reduce the resistance of the cathode, which can avoid the problem of large voltage drop due to large resistance of the cathode when a thinner metal is used as the cathode, thereby can avoid damage of the organic electroluminescent display panel due to the larger voltage drop.
Owner:BOE TECH GRP CO LTD

Field-effect transistor with spin-dependent transmission characteristics and non-volatile memory using the same

When a gate voltage VGS is applied, the Schottky barrier width due to the metallic spin band in the ferromagnetic source is decreased, and up-spin electrons from the metallic spin band are tunnel-injected into the channel region. However, down-spin electrons from the nonmagnetic contact (3b) are not injected because of the energy barrier due to semiconductive spin band of the ferromagnetic source (3a). That is, only up-spin electrons are injected into the channel layer from the ferromagnetic source (3a). If the ferromagnetic source (3a) and the ferromagnetic drain (5a) are parallel magnetized, up-spin electrons are conducted through the metallic spin band of the ferromagnetic drain to become the drain current. Contrarily, if the ferromagnetic source (3a) and the ferromagnetic drain (5a) are antiparallel magnetized, up-spin electrons cannon be conducted through the ferromagnetic drain (5a) because of the energy barrier Ec due to the semiconductive spin band in the ferromagnetic drain (5a). Thus, a high-performance high-degree of integration nonvolatile memory composed of MISFETs operating on the above operating principle can be fabricated.
Owner:JAPAN SCI & TECH CORP

Starter provided with electromagnetic solenoid integrating rush current suppression function

An electromagnetic solenoid that controls a motor current of a starter includes: a first switch including a pair of first fixed contacts and a first movable contact, intermitting the motor current; a suppression resistor that suppresses the motor current; a second switch including a pair of second fixed contacts and a second movable contact, making a short circuit path to bypass the suppression resistor; a regulation member being driven by a sub solenoid, regulating the second switch being closed and releasing the second switch from being regulated after predetermined time elapses when a plunger is pulled by a main electromagnet. The regulation member is disposed between a regulated position and a released position to regulate the second switch.
Owner:DENSO CORP

Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes

A compensation circuit is disclosed for compensating bias levels of an operational circuit in response to variations in a supply voltage. The compensation mechanism identifies variations in the supply voltage by comparing the voltage of a selected node of the operation circuit with a relatively constant or fixed reference voltage. Based on the results of the comparison, the compensation mechanism adjusts selected bias levels in the operational circuit, preferably using current stealing circuitry, so that the functionality and performance of the operational circuit can be substantially maintained. A biasing circuit for biasing one or more differential pairs is also disclosed.
Owner:HONEYWELL INC

Method and apparatus for limiting in-rush current to a starter motor of a vehicle

A system and method for limiting engine starting current of a starter motor of an engine is described. In one example, starter motor current is controlled according to vehicle speed. The method may allow vehicle system voltage to remain at a higher level during automatically initiated engine starts.
Owner:FORD GLOBAL TECH LLC

Enhancement of the efficiency of energy recovery during spindle motor step-up phases for parking the R/W head of a disk storage device upon external supply failure

Energy recovery during recirculation phases of the phase windings of a multiphase spindle motor is increased when all the MOSFETs of the output bridge stage associated therewith are turned off (tristated) for charging a hold capacitor. This is accomplished by allowing the recirculation of the motor currents through the same MOSFETs of the output bridge stage that are turned on during the current recirculation phases. Recirculation of the currents and the charging of the hold capacitor takes place through fully saturated power MOSFETs.
Owner:STMICROELECTRONICS SRL

Battery Energy Storage, Battery Energy Storage System, Method, Computer Program And Computer Program Product

A battery energy storage arranged to be connected to a capacitor link, which is connected in parallel to a power converter. The battery energy storage includes a battery module and a direct current energy source connected in series with a voltage source converter. The voltage source converter is adapted to insert a positive voltage when the voltage of the battery module falls below a first threshold value, and to insert a negative voltage when the voltage of the battery module exceeds a second threshold value. The direct current energy source is adapted to be either charged or discharged during the voltage insertion by the voltage source converter. The disclosure also provides a battery energy storage system including such battery energy storage.
Owner:ABB RES LTD

Field-effect transistor with spin-dependent transmission characteristics and non-volatile memory using the same

When a gate voltage VGS is applied, the Schottky barrier width due to the metallic spin band in the ferromagnetic source is decreased, and up-spin electrons from the metallic spin band are tunnel-injected into the channel region. However, down-spin electrons from the nonmagnetic contact (3b) are not injected because of the energy barrier due to semiconductive spin band of the ferromagnetic source (3a). That is, only up-spin electrons are injected into the channel layer from the ferromagnetic source (3a). If the ferromagnetic source (3a) and the ferromagnetic drain (5a) are parallel magnetized, up-spin electrons are conducted through the metallic spin band of the ferromagnetic drain to become the drain current. Contrarily, if the ferromagnetic source (3a) and the (ferromagnetic drain (5a) are antiparallel magnetized, up-spin electrons cannot be conducted through the ferromagnetic drain (5a) because of the energy barrier Ec due to the semiconductive spin band in the ferromagnetic drain (5a). Thus, a high-performance high-degree of integration nonvolatile memory composed of MISFETs operating on the above operating principle can be fabricated.
Owner:JAPAN SCI & TECH CORP +1

Substrate for semiconductor device, semiconductor device, and electronic apparatus

ActiveUS20110101436A1Prevent and reduce and generation of leakageReduce leakageTransistorSolid-state devicesDevice materialEngineering
A substrate for a semiconductor device includes: a base substrate; a semiconductor layer that has a source region, a drain region, a plurality of channel regions, and at least one intermediate region; a source electrode being in contact with the source region; a drain electrode being in contact with the drain region; a gate electrode that overlaps the plurality of channel regions, the intermediate region, and each of a part of the source electrode and a part of the drain electrode; and a floating electrode being in contact with the intermediate region. The size of an area where the floating electrode and the gate electrode overlap each other is smaller than the sum of the size of an area where the source electrode and the gate electrode overlap each other and the size of an area where the drain electrode and the gate electrode overlap each other.
Owner:138 EAST LCD ADVANCEMENTS LTD

Fault direction judgment method suitable for wind power access system

The invention provides a fault direction judgment method suitable for a wind power access system and belongs to the technical field of power transmission line protection of the wind power access system. The technical problem is that the invention provides a non-earth-fault direction judgment method which is suitable for the wind power access system, and can effectively prevent direction misjudgement caused when a direction element is applied to the wind power side of a link line of the wind power access system. The technical scheme is characterized in that the method comprises the following steps: to begin with, collecting current and voltage at the protection installation place of the wind power side of the link line of the wind power access system; after obtaining the sampling value of a voltage fault component, obtaining positive-sequence component discrete values of the current, voltage and fault voltage; and finally, carrying out judgment on the fault according to the numerical values. The fault direction judgment method is suitable for an electric system.
Owner:STATE GRID CORP OF CHINA +2

Intelligent rail-holding high-temperature superconducting maglev train system

The invention discloses an intelligent rail-holding high-temperature superconducting maglev train system, which is characterized in that a plurality of magnetic circuits of four electromagnetic rails of an intelligent rail-holding subsystem are linearly arranged, a plurality of single coils are connected in series in the same direction, the four electromagnetic rails generate a continuous and uniform magnetic field in the rail direction, pinning magnetic flux generated by 16 monitoring type intelligent Dewars of an independent system unit surrounds the four electromagnetic rails, the acting force of automatic suspension, automatic stabilization and automatic guiding of the maglev train is enhanced, the electromagnetic field intensity of four electromagnetic rails and a middle electromagnetic rail of a section can be controlled and the electromagnetic field can be turned off under the control of a photoelectric proximity switch and a wireless remote control receiving module of a plurality of section converters, the four electromagnetic rails outside the section and the middle electromagnetic rail are all in a power-off state; and a moving magnetic field generated by the electromagnetic rails in the section drive a variable-frequency linear generator rotor, and the linear generator rotor induces alternating current.
Owner:朱幕松

Amplitude modulation driver

A circuit includes a first semiconductor device and a second semiconductor device. The first semiconductor device has a first source region, a first gate region, and a first drain region. The first gate region and the first drain region are separated by a first distance. The second semiconductor device has a second source region, a second gate region, and a second drain region. The second gate region and the second drain region separated by a second distance. The first distance is greater than the second distance.
Owner:PANASONIC CORP

Starter provided with electromagnetic solenoid integrating rush current suppression function

An electromagnetic solenoid that controls a motor current of a starter includes: a first switch including a pair of first fixed contacts and a first movable contact, intermitting the motor current; a suppression resistor that suppresses the motor current; a second switch including a pair of second fixed contacts and a second movable contact, making a short circuit path to bypass the suppression resistor; a regulation member being driven by a sub solenoid, regulating the second switch being closed and releasing the second switch from being regulated after predetermined time elapses when a plunger is pulled by a main electromagnet. The regulation member is disposed between a regulated position and a released position to regulate the second switch.
Owner:DENSO CORP

Organic electroluminescent display panel and display apparatus

The present invention discloses an organic electroluminescent display panel, comprising: a base substrate; a top-emitting type organic electroluminescent structure located on the base substrate, the organic electroluminescent structure comprising an anode, a light emitting layer and a cathode arranged in this order from the base substrate; and a packaging film covering the organic electroluminescent structure; the organic electroluminescent display panel further comprises a secondary electrode provided on the packaging film and electrically connected with the cathode through a via hole penetrating through the packaging film. Since the secondary electrode is additionally provided on the packaging film and is electrically connected with the cathode through the via hole penetrating through the packaging film, the secondary electrode electrically connected with the cathode can increase an equivalent thickness of the cathode and thus reduce the resistance of the cathode, which can avoid the problem of large voltage drop due to large resistance of the cathode when a thinner metal is used as the cathode, thereby can avoid damage of the organic electroluminescent display panel due to the larger voltage drop.
Owner:BOE TECH GRP CO LTD

Pluggable transceiver module

A pluggable module connected to the backplane or other connection interface of an information system unit so as to provide additional functionality thereto (such as a communications interface to an electrical or fiber optics cable), and arranged to draw electrical power from the system. In order to prevent excessive in-rush current on connection, the module is provided with power control circuitry which is adapted to incrementally increase the supply voltage to components within the module in a manner so as to avoid power supply glitches in the system, such as a substantial voltage drop, and / or excessive current flow.
Owner:SUMITOMO ELECTRIC DEVICE INNOVATIONS U S A

Guided wave Radar level gauge with explosion proof housing and floating barrier

A guided wave radar level gauge comprising a housing providing explosion proof protection and having an intrinsically safe output, a transmission line probe connected to the IS output. The housing encloses radar level gauge circuitry which is incompatible with intrinsic safety requirements, a microwave unit connected to the IS output, an electrical barrier connected between the RLG circuitry and the microwave unit, the electrical barrier having a barrier ground potential which is independent from the grounded housing wall, and a set of blocking capacitors connected between the microwave unit and the IS output.
Owner:ROSEMOUNT TANK RADAR

Circuit for detection and control of LED string operation

A circuit is disclosed for determining which of a multiplicity of LED strings in an illumination system has a fault. A group of circuits determines the maximum, minimum, midpoint between maximum and minimum, and average voltage of the group of LED string voltages in use, and examines the statistical properties of the LED string voltages. Comparators are used to find the strings which have the highest and lowest operating voltages, and to compare the midpoint and average voltages to determine whether the highest or lowest voltage string is responsible for causing a fault in the illumination system operation. Memory means are used to keep the said determined string turned off to prevent faulty operation.
Owner:MICROCHIP TECH INC

A fault direction judgment method suitable for wind power access system

The invention provides a fault direction judgment method suitable for a wind power access system and belongs to the technical field of power transmission line protection of the wind power access system. The technical problem is that the invention provides a non-earth-fault direction judgment method which is suitable for the wind power access system, and can effectively prevent direction misjudgement caused when a direction element is applied to the wind power side of a link line of the wind power access system. The technical scheme is characterized in that the method comprises the following steps: to begin with, collecting current and voltage at the protection installation place of the wind power side of the link line of the wind power access system; after obtaining the sampling value of a voltage fault component, obtaining positive-sequence component discrete values of the current, voltage and fault voltage; and finally, carrying out judgment on the fault according to the numerical values. The fault direction judgment method is suitable for an electric system.
Owner:STATE GRID CORP OF CHINA +2
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