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How much financial risk can you tolerate in current coronavirus-hit economy? Find out

The stock market, bond market and other financial markets are feeling the negative effect of coronavirus. ET wealth presents a quiz to help you assess your risk appetite in the current market scenario.




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Ulip holders may get option to stagger maturity payments to cushion current stock market impact

Where unit-linked policies mature and fund value is to be paid in lumpsum, Life Insurers may offer staggered settlement option to policyholders. This onetime option is regardless of whether such option exists or not in the specific product.




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Economy likely to show negative growth in current year: Montek Singh Ahluwalia

The rationale behind the lockdown was not that it would prevent infections but that it would allow us to build the health infrastructure to be able to cope with larger numbers infected, opined Montek Singh Ahluwalia




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Nicolás Maduro Moros and 14 Current and Former Venezuelan Officials Charged with Narco-Terrorism, Corruption, Drug Trafficking and Other Criminal Charges

Former President of Venezuela Nicolás Maduro Moros, Venezuela’s vice president for the economy, Venezuela’s Minister of Defense, and Venezuela’s Chief Supreme Court Justice are among those charged in New York City; Washington, DC; and Miami, along with current and former Venezuelan government officials as well as two Fuerzas Armadas Revolucionarias de Colombia (FARC) leaders, announced U.S. Attorney General William P. Barr, U.S. Attorney Geoffrey S. Berman of the Southern District of New York, U.S. Attorney Ariana Fajardo Orshan of the Southern District of Florida, Assistant Attorney General Brian A. Benczkowski of the Justice Department’s Criminal Division, Acting Administrator Uttam Dhillon of the U.S. Drug Enforcement Administration (DEA) and Acting Executive Associate Director Alysa D. Erichs of U.S. Immigration and Customs Enforcement’s Homeland Security Investigations (HSI).




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Fire crews are actively working to suppress the lightning ignited Imperial Fire. Currently the fire is estimated to be three (3) acres in size and is located along the Cape Royal Road near Vista Encantada.

Fire crews are actively working to suppress the lightning ignited Imperial Fire. Currently the fire is estimated to be three (3) acres in size and is located along the Cape Royal Road near Vista Encantada. https://www.nps.gov/grca/learn/news/imperial-fire-being-suppressed-on-north-rim-of-grand-canyon-national-park-20180718.htm




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Current Grand Canyon National Park Closures as of August 8, 2018

This is a summary of current fire related closures for Grand Canyon National Park. Today, new temporary trail closures were implemented that include the Nankoweap Trail, the Point Imperial Trail, and Fire Point on the North Rim. https://www.nps.gov/grca/learn/news/2018-08-08-current-grand-canyon-national-park-closures.htm




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Preliminary Findings Indicate No Current Uranium Ore Exposure at Grand Canyon

Preliminary findings of an interagency safety review conducted last week at Grand Canyon National Park indicate no current exposure concerns for park employees and visitors from uranium ore samples previously stored in buckets at the park's Museum Collection building. https://www.nps.gov/grca/learn/news/preliminary-findings-indicate-no-current-uranium-ore-exposure.htm




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A vertical slide with current page override.

A vertical sliding menu with current page styling and the ability to override the current page style when hovering other items.




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A dropdown menu with current page override.

A dropdown menu with current page styling and the ability to override the current page style when hovering other items.




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Dropline menu with current page override

A CSS only dropline menu with current page selection and override when hovering other tabs.




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Wood energy for residential heating in Alaska: current conditions, attitudes, and expected use.

This study considered three aspects of residential wood energy use in Alaska: current conditions and fuel consumption, knowledge and attitudes, and future use and conditions. We found that heating oil was the primary fuel for home heating in southeast and interior Alaska, whereas natural gas was used most often in south-central Alaska (Anchorage). Firewood heating played a much more important role as a secondary (vs. primary) heating source in all regions of Alaska. In interior Alaska, there was a somewhat greater interest in the use of wood energy compared to other regions. Likewise, consumption of fossil fuels was considerably greater in interior Alaska.




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Nontimber forest products in the United States: Montreal Process indicators as measures of current conditions and sustainability.

The United States, in partnership with 11 other countries, participates in the Montreal Process. Each country assesses national progress toward the sustainable management of forest resources by using a set of criteria and indicators agreed on by all member countries. Several indicators focus on nontimber forest products (NTFPs). In the United States, permit and contract data from the U.S. Forest Service and the Bureau of Land Management, in addition to several other data sources, were used as a benchmark to assess harvest, value, employment, exports and imports, per capita consumption, and subsistence uses for many NTFPs. The retail value of commercial harvests of NTFPs from U.S. forest lands is estimated at $1.4 billion annually. Nontimber forest products in the United States are important to many people throughout the country for personal, cultural, and commercial uses, providing food security, beauty, connection to culture and tradition, and income.




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KCMP (89.3 The Current)/Minneapolis’ Jim McGuinn And Glassnote’s Nick Petropoulos Collaborate On Videos To Support Charity

While sheltering-at-home in UPSTATE NEW YORK, GLASSNOTE Head Of Promotion NICK PETROPOULOS sent KCMP (89.3 THE CURRENT)/MINNEAPOLIS PD JIM MCGUINN a song of guitar riffs and an email about … more




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DHS: Secret Service has 11 Current Virus Cases

According to the DHS document, along with the 11 active cases there are 23 members of the Secret Service who have recovered from COVID-19 and an additional 60 employees who are self-quarantining. No details have been provided about which members of the Secret Service are infected or if any have recently been on detail with the president or vice president.




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Finite dimensional simple modules of $(q, mathbf{Q})$-current algebras. (arXiv:2004.11069v2 [math.RT] UPDATED)

The $(q, mathbf{Q})$-current algebra associated with the general linear Lie algebra was introduced by the second author in the study of representation theory of cyclotomic $q$-Schur algebras. In this paper, we study the $(q, mathbf{Q})$-current algebra $U_q(mathfrak{sl}_n^{langle mathbf{Q} angle}[x])$ associated with the special linear Lie algebra $mathfrak{sl}_n$. In particular, we classify finite dimensional simple $U_q(mathfrak{sl}_n^{langle mathbf{Q} angle}[x])$-modules.




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A regularity criterion of the 3D MHD equations involving one velocity and one current density component in Lorentz. (arXiv:2005.03377v1 [math.AP])

In this paper, we study the regularity criterion of weak solutions to the three-dimensional (3D) MHD equations. It is proved that the solution $(u,b)$ becomes regular provided that one velocity and one current density component of the solution satisfy% egin{equation} u_{3}in L^{frac{30alpha }{7alpha -45}}left( 0,T;L^{alpha ,infty }left( mathbb{R}^{3} ight) ight) ext{ with }frac{45}{7}% leq alpha leq infty , label{eq01} end{equation}% and egin{equation} j_{3}in L^{frac{2eta }{2eta -3}}left( 0,T;L^{eta ,infty }left( mathbb{R}^{3} ight) ight) ext{ with }frac{3}{2}leq eta leq infty , label{eq02} end{equation}% which generalize some known results.




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Recurrent Neural Network Language Models Always Learn English-Like Relative Clause Attachment. (arXiv:2005.00165v3 [cs.CL] UPDATED)

A standard approach to evaluating language models analyzes how models assign probabilities to valid versus invalid syntactic constructions (i.e. is a grammatical sentence more probable than an ungrammatical sentence). Our work uses ambiguous relative clause attachment to extend such evaluations to cases of multiple simultaneous valid interpretations, where stark grammaticality differences are absent. We compare model performance in English and Spanish to show that non-linguistic biases in RNN LMs advantageously overlap with syntactic structure in English but not Spanish. Thus, English models may appear to acquire human-like syntactic preferences, while models trained on Spanish fail to acquire comparable human-like preferences. We conclude by relating these results to broader concerns about the relationship between comprehension (i.e. typical language model use cases) and production (which generates the training data for language models), suggesting that necessary linguistic biases are not present in the training signal at all.




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Co-current catalyst flow with feed for fractionated feed recombined and sent to high temperature reforming reactors

A process is presented for the increasing the yields of aromatics from reforming a hydrocarbon feedstream. The process includes splitting a naphtha feedstream into a light hydrocarbon stream, and a heavier stream having a relatively rich concentration of naphthenes. The heavy stream is reformed to convert the naphthenes to aromatics and the resulting product stream is further reformed with the light hydrocarbon stream to increase the aromatics yields. The catalyst is passed through the reactors in a sequential manner.




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Method for quenching paraffin dehydrogenation reaction in counter-current reactor

A process is presented for quenching a process stream in a paraffin dehydrogenation process. The process comprises cooling a propane dehydrogenation stream during the hot residence time after the process stream leaves the catalytic bed reactor section. The process includes cooling and compressing the product stream, taking a portion of the product stream and passing the portion of the product stream to the mix with the process stream as it leaves the catalytic bed reactor section.




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Apparatuses enabling concurrent communication between an interface die and a plurality of dice stacks, interleaved conductive paths in stacked devices, and methods for forming and operating the same

Various embodiments include apparatuses, stacked devices and methods of forming dice stacks on an interface die. In one such apparatus, a dice stack includes at least a first die and a second die, and conductive paths coupling the first die and the second die to the common control die. In some embodiments, the conductive paths may be arranged to connect with circuitry on alternating dice of the stack. In other embodiments, a plurality of dice stacks may be arranged on a single interface die, and some or all of the dice may have interleaving conductive paths.




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Method of reducing downward flow of air currents on the lee side of exterior structures

A method of reducing the downward flow of air currents on the leeward side of an emissions emitting structure including the step of using a system that includes components chosen from the group consisting of one or more mechanical air moving devices; physical structures; and combinations thereof to create an increase in the air pressure within a volume of air on the leeward side of an emissions emitting structure having emissions that become airborne. The increased air pressure prevents or lessens downward flow of emissions that would occur without the use of the system and increases the safety by which one can travel a road or other transportation route that might otherwise be visually obscured by the emissions and the safety of the property and those within the area where emissions occur.




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Prediction of dynamic current waveform and spectrum in a semiconductor device

A method for accurately determining the shape of currents in a current spectrum for a circuit design is provided. The method includes determining timing and power consumption characteristics. In one embodiment, timing characteristics are provided through a electronic design automation tool. The timing characteristics yield a current pulse time width. In another embodiment, power consumption characteristics are provided by an EDA tool. The power consumption characteristics yield a current pulse amplitude. The shape of the current pulse is obtained by incrementally processing a power analyzer tool over relatively small time increments over one or more clock cycles while capturing the switching nodes of a simulation of the circuit design for each time increment. In one embodiment, the time increments are one nanosecond or less.




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Fast-cycling, conduction-cooled, quasi-isothermal, superconducting fault current limiter

Fault Current Limiters (FCL) provide protection for upstream and/or downstream devices in electric power grids. Conventional FCL require the use of expensive conductors and liquid or gas cryogen handling. Disclosed embodiments describe FCL systems and devices that use lower cost superconductors, require no liquid cryogen, and are fast cycling. These improved FCL can sustain many sequential faults and require less time to clear faults while avoiding the use of liquid cryogen. Disclosed embodiments describe a FCL with a superconductor and cladding cooled to cryogenic temperatures; these are connected in parallel with a second resistor across two nodes in a circuit. According to disclosed embodiments, the resistance of the superconducting components and its sheath in the fault mode are sufficiently high to minimize energy deposition within the cryogenic system, minimizing recovery time. A scheme for intermediate heat storage also is described which allows a useful compromise between conductor length enabled energy minimization and allowable number of sequential faults to enable an overall system design which is affordable, and yet allows conduction cooled (cryogen free) systems which have fast recovery and allows for multiple sequential faults.




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Superconducting direct-current electrical cable

A superconductive electrical direct current cable with at least two conductors insulated relative to each other is indicated, where the cable is placed with at least two conductors insulated relative to each other, where the conductors are arranged in a cryostat suitable for guidance of the cooling agent, wherein the cryostat is composed of at least one metal pipe which is surrounded by a circumferentially closed layer with thermally insulating properties. In the cryostat is arranged a strand-shaped carrier composed of insulating material, where the carrier has at least two diametrically oppositely located outwardly open grooves in each of which is arranged one of the conductors. Each conductor is composed of a plurality of superconductive elements.




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Inductive fault current limiter with divided secondary coil configuration

An inductive fault current limiter (1), has a normally conducting primary coil assembly (2) with a multiplicity of turns (3), and a superconducting, short-circuited secondary coil assembly (4). The primary coil assembly (2) and the secondary coil assembly (4) are disposed at least substantially coaxially with respect to each other and at least partially interleaved in each other. The secondary coil assembly (4) has a first coil section (4a) disposed radially inside the turns (3) of the primary coil assembly (2) and a second coil section (4b) disposed radially outside the turns (3) of the primary coil assembly (2). The fault current limiter has an increased inductance ratio.




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Device, method, and graphical user interface for managing concurrently open software applications

A method includes displaying a first application view. A first input is detected, and an application view selection mode is entered for selecting one of concurrently open applications for display in a corresponding application view. An initial group of open application icons in a first predefined area and at least a portion of the first application view adjacent to the first predefined area are concurrently displayed. The initial group of open application icons corresponds to at least some of the concurrently open applications. A gesture is detected on a respective open application icon in the first predefined area, and a respective application view for a corresponding application is displayed without concurrently displaying an application view for any other application in the concurrently open applications. The open application icons in the first predefined area cease to be displayed, and the application view selection mode is exited.




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Counter-current multistage fischer tropsch reactor systems

The invention discloses an improved multistage fischer tropsch process scheme for the production of hydrocarbon fuels comprising feeding gaseous phase syngas and liquid stream hydrocarbons in a counter current manner such as herein described into the reaction vessel at a number of stages containing reaction catalysts; wherein fresh syngas enters into the stage where the product liquid stream leaves and the fresh liquid stream enters into the stage where the unreacted syngas leaves; wherein further the temperature of each stage can be controlled independently. More particularly the invention relates to improving the heat release in different reactors, product selectivity and reactor productivity of FT reactors.




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Fluid mixer using countercurrent injection

A method and apparatus for mixing fluids, such as beverage syrup and water, uses countercurrent injection to improve blending of the fluids. A mixing chamber has a first inlet through which a first fluid is fed to the mixing chamber, and a second inlet through which a countercurrent injection nozzle extends and is operative to inject a second fluid into a stream of the first fluid. The countercurrent injection nozzle is equipped with a check valve to control the flow of fluid into the mixing chamber. The mixing chamber may include additional inlets that may be fitted with countercurrent injection nozzles to permit the countercurrent injection of other fluid, such as flavorings, into the stream of the first fluid.




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Eddy current minimizing flow plug for use in flow conditioning and flow metering

An eddy-current-minimizing flow plug has an outer radial wall with open flow channels formed between the plug's inlet and outlet. The plug has a central region coupled to the inner surface of the outer radial wall. Each open flow channel includes (i) a first portion originating at the inlet and converging to a location in the plug where convergence is contributed to by changes in thickness of the outer radial wall and divergence of the central region, and (ii) a second portion originating in the plug and diverging to the outlet where divergence is contributed to by changes in thickness of the outer radial wall and convergence of the central region. For at least a portion of the open flow channels, a central axis passing through the first and second portions is non-parallel with respect to the given direction of the flow.




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High sensitivity eddy current monitoring system

A method of chemical mechanical polishing a substrate includes polishing a metal layer on the substrate at a polishing station, monitoring thickness of the metal layer during polishing at the polishing station with an eddy current monitoring system, and controlling pressures applied by a carrier head to the substrate during polishing of the metal layer at the polishing station based on thickness measurements of the metal layer from the eddy current monitoring system to reduce differences between an expected thickness profile of the metal layer and a target profile, wherein the metal layer has a resistivity greater than 700 ohm Angstroms.




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Controller that determines average output current of a switching circuit

A switching circuit (400) comprising an inductive component (406) including at least one winding; and a switch (404) is configured to transfer power from a voltage source (402) to the inductive component (406) in accordance with a switch control signal (412). The switching circuit (400) also comprises a controller (408) configured to integrate the voltage across the inductive component (406) in order to generate a signal representative of magnetic flux in the inductive component (406); and use the signal representative of the magnetic flux in the inductive component to account for a peak magnetization current value in order to control the switch (404).




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Alternating-current/direct-current converter

An alternating-current/direct-current converter includes a rectifier, a reactor, a capacitor, and a switching rectifier. The rectifier is configured to rectify alternating-current voltage output from an alternating-current power source, thereby converting the alternating-current voltage into direct-current voltage, and to output the direct-current voltage. The capacitor includes terminals. The switching rectifier is coupled to the AC power source and switchable to output the direct-current voltage to the capacitor.




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Full bridge DC-DC converter that applies current doubler

A full bridge DC-DC converter to which a current doubler is applicable is provided and includes a transformer and a switching circuit that converts a high direct current voltage into a high alternating current voltage and then outputs the high alternating current voltage to the primary side of the transformer. In addition, an output circuit receives and processes the output of the secondary side of the transformer and supplies the processed output to an electric load. The output circuit includes a first inductor, a first contact resistor, a second inductor, a second contact resistor, a first diode, a third contact resister, a second diode, and a fourth contact resister.




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Circuits and methods for determining peak current

Embodiments include circuits and methods to determine peak current for current regulation. A control signal circuit monitors a current on the primary side of a transformer based a turn on time of a switch coupled to the primary side. The control signal circuit determines whether the monitored current exceeds an over-current protection threshold, and determines a duration that the monitored current exceeds the over-current protection threshold. The control signal circuit determines a peak primary current in the primary side based on the over-current protection threshold, the duration that the monitored current exceeds the over-current protection threshold, and the turn on time of the switch. The control signal circuit controls the turn on time for the switch based on the determined peak primary current.




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Low forward voltage rectifier using capacitive current splitting

A Low Forward Voltage Rectifier (LFVR) circuit includes a bipolar transistor, a parallel diode, and a capacitive current splitting network. The LFVR circuit, when it is performing a rectifying function, conducts the forward current from a first node to a second node provided that the voltage from the first node to the second node is adequately positive. The capacitive current splitting network causes a portion of the forward current to be a base current of the bipolar transistor, thereby biasing the transistor so that the forward current experiences a low forward voltage drop across the transistor. The LFVR circuit sees use in as a rectifier in many different types of switching power converters, including in flyback, Cuk, SEPIC, boost, buck-boost, PFC, half-bridge resonant, and full-bridge resonant converters. Due to the low forward voltage drop across the LFVR, converter efficiency is improved.




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Continuous counter-current organosolv processing of lignocellulosic feedstocks

A modular process for organosolv fractionation of lignocellulosic feedstocks into component parts and further processing of said component parts into one or more of a de-lignified cellulose stream, a sugar stream, small-chain alcohol streams and four structurally distinct classes of lignin derivatives. The modular process comprises a first processing module configured for digesting lignocellulosic feedstocks with an organic solvent thereby producing a cellulosic solids fraction and a liquid fraction, a second processing module configured for recovering small-chain alcohols and optionally a first class of lignin derivatives from the cellulosic solids fraction, a third processing module configured for recovering from the liquid fraction at least one of a second class and a third class of lignin derivatives or mixtures thereof, and waste stream comprising a fourth class of lignin derivatives. The fourth processing module may optionally recover the fourth class of lignin derivatives.




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Wall elements for water-cooled, current-conducting electrode bearing arms and electrode bearing arms produced from such wall elements

A support arm for a water-cooled, current-conducting electrode includes wall elements, wherein each wall element is a flat conductive metal with a hollowed out recess on its outer surface extending over its length. The support arm further includes a cover extending over each recess to define a closed cooling channel within each wall element when the cover is welded to the wall element. The cover includes with an inlet port and an outlet port for cooling water.




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Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and improved center shield

A two-dimensional magnetic recording (TDMR) read head has upper and lower read sensors wherein the lower read sensor has its magnetization biased by side shields of soft magnetic material. The center shield between the lower and upper sensors may be an antiparallel structure (APS) with two ferromagnetic layers separated by an antiparallel coupling (APC) layer. The center shield has a central region and two side regions, but there is no antiferromagnetic (AF) layer in the central region. Instead the two side regions of the upper ferromagnetic layer in the APS are pinned by AF tab layers that are electrically isolated from the upper sensor. The upper ferromagnetic layer and the APC layer in the APS may also be located only in the side regions. The thickness of the center shield can thus be made thinner, which reduces the free layer to free layer spacing.




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Reinforced isolation for current sensor with magnetic field transducer

A current sensor packaged in an integrated circuit package to include a magnetic field sensing circuit, a current conductor and an insulator that meets the safety isolation requirements for reinforced insulation under the UL 60950-1 Standard is presented. The insulator is provided as an insulation structure having at least two layers of thin sheet material. The insulation structure is dimensioned so that plastic material forming a molded plastic body of the package provides a reinforced insulation. According to one embodiment, the insulation structure has two layers of insulating tape. Each insulating tape layer includes a polyimide film and adhesive. The insulation structure and the molded plastic body can be constructed to achieve at least a 500 VRMS working voltage rating.




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Surface mountable over-current protection device

A surface-mountable over-current protection device comprises one PTC material layer, first and second connecting conductors, first and second electrodes and an insulating layer. The PTC material layer has a resistivity less than 0.2 Ω-cm, and comprises crystalline polymer and conductive filler dispersed therein. The first and second connecting conductors are capable of effectively dissipating heat generated from the PTC material layer. The first and second electrodes are electrically connected to first and second surfaces of the PTC material layer through the first and second connecting conductors, respectively. The dissipation factor depending on the ratio of the total area of the electrodes and the conductors to the area of the PTC material layer is greater than 0.6. At 25° C., the value of the hold current of the device divided by the product of the area of the PTC material layer and the number of the PTC material layer is greater than 1A/mm2.




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Surface mountable over-current protection device

A surface mountable over-current protection device having upper and lower surfaces comprises a PTC device, first and second electrodes, and first and second circuits. The PTC device comprises a PTC material layer and first and second conductive layers. The PTC material layer is disposed between the conductive layers and comprises crystalline polymer and conductive filler dispersed therein. The first electrode comprises a pair of first metal foils, whereas the second electrode comprises a pair of second metal foils. The first circuit connects the first electrode and conductive layer, and has a first planar line extending horizontally. The second circuit connects the second electrode and conductive layer, and has a second planar line extending horizontally. At least one of the planar lines has a thermal resistance sufficient to mitigate heat dissipation by which the over-current protection device undergoes a test at 25° C. and 8 amperes can trip within 60 seconds.




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Over-current protection device and method of making the same

An over-current protection device has a PTC device, first and second electrodes and an insulation layer. The PTC device comprises first and second electrically conductive members and a PTC layer laminated between the first and second electrically conductive members. The first and second electrodes are electrically connected to the first and second electrically conductive members, respectively. The insulation layer is disposed on a surface of the first electrically conductive member. The device is a stack structure extending along a first direction, and comprises at least one hole extending along a second direction substantially perpendicular to the first direction. The value of the covered area of the hole divided by the area of the form factor of the over-current protection device is not less than 2%, and the value of the thickness of the device divided by the number of the PTC devices is less than 0.7 mm.




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Apparatus and method for improved current shunt sensing

An apparatus and method for improved current shunt sensing in an electrical system, such as a renewable energy electrical system, is disclosed. A current shunt according to aspects of the present disclosure includes a conductive portion that is placed in series with an electrical system The current shunt includes a sensing element that is used to measure the voltage across the conductive portion of the current shunt. The sensing element has an increased width relative to the width of the conductive portion of the shunt. The increased width of the sensing element provides for improved current shunt sensing that results in more accurate voltage (and thus current) measurements across a wide range of frequencies.




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Surface mountable over-current protection device

A surface-mountable over-current protection device comprises a PTC material layer, first and second conductive layers, first and second electrodes, first and second electrically conductive connecting members. The PTC material layer has a resistivity less than 0.18 Ω-cm. The conductive layers are in contact with opposite surfaces of the PTC material layer. The first electrode comprises pair of first metal foils and is insulated from the second conductive layer. The second electrode comprises a pair of second metal foils and is insulated from the first conductive layer. The first electrically conductive connecting member connects to the first metal foils and conductive layer. The second electrically conductive connecting member connects to the second metal foils and conductive layer. The first electrically conductive connecting member comprises 40%-100% by area of the first lateral surface, and the second electrically conductive connecting member comprises 40%-100% by area of the second lateral surface.




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Over-current protection device

An over-current protection device comprises a PTC material layer, a first electrode layer and a second electrode layer. The PTC material layer has opposite first and second surfaces and opposite first and second lateral surfaces. The first electrode layer is in physical contact with the first surface of the PTC material layer and extends to the first lateral surface. The second electrode layer is in physical contact with the first surface of the PTC material layer and extends to the second lateral surface. The second electrode layer is insulated from the first electrode layer by a first separation. The first electrode layer and the second electrode layer are substantially laterally symmetrical, and serve as interfaces for current flowing in and out of the device when the over-current protection device is in use.




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Surface mountable over-current protection device

A surface mountable over-current protection device comprises one PTC material layer, first and second conductive layers, first and second electrodes, and an insulating layer. The PTC material layer comprises crystalline polymer and conductive filler dispersed therein. The first and second conductive layers are disposed on first and second planar surfaces of the PTC material layer, respectively. The first and second electrodes are electrically connected to the first and second conductive layers. The insulating layer is disposed between the first and the second electrodes for insulation. At the melting point of the crystalline polymer, the CTE of the crystalline polymer is greater than 100 times the CTE of the first or second conductive layer, and the first and/or second conductive layers has a thickness which is large enough to obtain a resistance jump value R3/Ri less than 1.4.




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Current sensing circuit disconnect device and method

A device and method are provided for saving power and electricity in a charging device such for external power supplies and battery chargers having a primary circuit and a secondary circuit where a switch is located in the primary circuit and a current sensing device in the secondary circuit to sense when there is a drop in current in the secondary circuit or no current in the secondary circuit because the load or a cell phone is charged and when this occurs the switch in the primary circuit is opened and the primary circuit no longer draws power from the source of power until the switch in the primary circuit is closed by activation of a user of the charging device.




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Transfer switch with ground current indication

A transfer switch configured to detect a ground current is configured to selectively connect a first power source or a second power source to a load. Each of the power sources includes at least one “hot” lead and one neutral lead, and the transfer switch is configured to switch both the “hot” and the neutral leads. If the neutral switching portion of the transfer switch fails, current may be supplied to the load via the “hot” lead of one of the power sources and return from the load via a ground conductor and the neutral lead of the other power source. The transfer switch includes a current sensor, detecting current on the ground conductor, in order to detect such a condition. The signal from the current sensor is provided to a control circuit, which, in turn, activates an indicator if the current on the ground conductor exceeds a predefined level.




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Method and apparatus for processing a motor signal, having current ripple, of a DC motor

In order to process a motor signal (Ia, Um) of a DC motor (4), in particular of an adjustment drive of a motor vehicle, the armature current (Ia) and the motor voltage (Um) of the DC motor (4) are detected and used for determining the back-emf (E) of the DC motor (4), wherein the determined back-emf (E) is used to generate a useful signal (Sf, SEFL), which is in particular speed-proportional, from the armature current signal (Ia) for position sensing or for evaluating an excess force limitation.




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Spindle speed detection through current sensing during boost braking

A circuit includes a comparator having input terminals configured to be coupled across a drive transistor adapted to drive a phase of a motor. The comparator senses a drive current of the motor phase, said sensed drive current represented by a periodic signal whose period is indicative of motor speed. A motor speed calculation circuit receives the periodic signal and processes the periodic signal to determine a speed of the motor.