rre

Frequency domain bitmap triggering using color, density and correlation based triggers

An RF test and measurement device, including a front end for receiving a time-varying signal and a real-time engine for generating digital frequency domain spectrums based on the time-varying signal. The device also includes a memory subsystem containing a frequency domain bitmap which is updated through sequential receipt and storage of the digital frequency domain spectrums. The real time engine is further configured to monitor the frequency domain bitmap for occurrence of a signal characteristic, and in response to detection of the signal characteristic, cause a capture of the time-varying signal into a storage location of the RF test and measurement device.




rre

Nuclear reactor green and sintered fuel pellets, corresponding fuel rod and fuel assembly

A sintered fuel pellet for a water nuclear reactor fuel rod including a peripheral wall extending along a central axis and two end faces. At least one of the end faces includes at least a first chamfer extending from the peripheral wall towards the central axis with a first non-zero slope with respect to a plane perpendicular to the central axis and a second chamfer extending from the first chamfer towards the central axis with a second non-zero slope with respect to a plane perpendicular to the central axis, wherein the first slope is different from the second slope.




rre

Transmitter having voltage driver and current driver

A circuit includes a first power node at a first voltage level, a second power node at a second voltage level, a first voltage driver, a first current driver, and a control unit. The first voltage driver is configured to electrically couple a first output node to the first power node when a first input signal at the first input node is at a first logic state, and electrically couple a first output node to the second power node when the first input signal is at a second logic state. The first current driver is configured to inject or extract a first adjustment current into or out of a first output node. The control unit is configured to generate a measurement result of the first voltage level, and to set the first adjustment current according to the measurement result.




rre

Path display apparatus considering correction data

A path display apparatus includes a first position command acquiring unit that acquires first position command for motors, a first position feedback acquiring unit that acquires first position feedback of each of the motors, a correction data acquiring unit that acquires correction data generated for each of the motors, a second position command calculating unit that subtracts the correction data from the first position command to calculate a second position command, a second position feedback calculating unit that subtracts the correction data from the first position feedback to calculate second position feedback, a command path display unit that displays a command path of the tip point of the tool, based on the second position command; and a feedback path display unit that displays a feedback path of the tip point of the tool, based on the second position feedback.




rre

Machine tool comprising a machine spindle, a tool holder and a contact point for electric current or data transmission

A machine tool having a motor-driven machine spindle which can be rotated about a spindle axis. The machine spindle has a tool holder arranged at the face. A tool is exchangeably arranged on the machine spindle. The tool has a coupling element which is compatible with the tool holder of the machine spindle. The coupling element has a rear surface pointing toward the machine spindle. The machine tool has at least one galvanic contact point for the electric current or data transmission, the point being arranged between the machine spindle and the tool and rotating together with the machine spindle. The galvanic contact point has a contact element which is arranged at the face of the tool holder on the spindle side, and a contact element which is arranged on the rear surface of the coupling element on the tool side.




rre

System and method for correcting for metal artifacts using multi-energy computed tomography

A method is provided. The method includes acquiring a first dataset at a first energy spectrum and a second dataset at a second energy spectrum. The method also includes extracting a metal artifact correction signal using the first dataset and the second dataset or using a first reconstructed image and a second reconstructed image generated respectively from the first and the second datasets. The method further includes performing metal artifact correction on the first reconstructed image using the metal artifact correction signal to generate a first corrected image.




rre

Data transmission apparatus having frequency synthesizer with integer division factor, corresponding method, and data transmission system

A data transmission apparatus disposed within two network layers operative at different data rates is provided. The data transmission apparatus is coupled to a clock generator which provides a reference clock for a lower network layer and is coupled to a frequency synthesizer with an integer division factor that generates a divided clock for an upper network layer according to the reference clock and the integer division factor. The data transmission apparatus includes a first processing circuit and a second processing circuit. The first processing circuit corresponding to the upper network layer receives and transmits data by using the divided clock as its operation frequency. The second processing circuit corresponding to the lower network layer receives and transmits data from the first processing circuit by using the reference clock as an operation frequency for encoding data. The divided clock is generated from the frequency synthesizer with the integer division factor.




rre

Memory training results corresponding to a plurality of memory modules

Methods, apparatuses, and computer program products for improving memory training results corresponding to a plurality of memory modules are provided. Embodiments include detecting a hardware configuration change upon initiating a boot sequence of a system that includes the plurality of memory modules; generating for a plurality of training iterations, reference training values corresponding to aligning of a data strobe (DQS) signal with a data valid window of data (DQ) lines of the plurality of memory modules; identifying for each training iteration, any outer values within the reference training values generated for that training iteration; eliminating the identified outer values from the reference training values; generating a final reference training value based on an average of the remaining reference training values; and using the final reference training value as the DQ-DQS timing value for the boot sequence of the system.




rre

Liquid crystal pixel correction using pixel boundary detection

A video processing circuit detects a risk boundary that is a part of a boundary between a dark pixel and a bright pixel, and is determined in accordance with the tilt azimuth of liquid crystal molecules from a boundary changed over the previous frame to the current frame and, for at least one side of dark pixels and bright pixels brought into contact with the detected risk boundary, corrects a video signal designating the application voltage of a liquid crystal element corresponding to the pixel of the frame brought into contact with the risk boundary out of a plurality of frames from the current frame to k frames (here, k is a natural number) following the current frame such that a lateral direction electric field generated between the dark pixel and the bright pixel decreases.




rre

Methods, apparatus and systems for generating location-corrected searchable electronic records of underground facility locate and/or marking operations

Generating a corrected electronic record of a locate and/or marking operation. The operation comprises locating and/or identifying, using a physical locate mark, presence or absence of an underground facility within a dig area. At least a portion of the dig area may be excavated or disturbed. First information relating to a location of the facility and/or the mark is received. Based at least in part on the first information, the location of the facility and/or the mark is represented to generate an electronic visual representation of the operation. Second information relating to a corrected location of the facility and/or the mark is received. Based at least in part on the second information, the corrected location is represented to generate a corrected electronic visual representation of the operation. Third information relating to the corrected representation of the operation is transmitted and/or stored to generate the corrected electronic record of the operation.




rre

Available charging/discharging current calculation method and power supply device

A method includes steps of dividing resistance R into a physical and chemical resistances Ro and Rp, obtaining corrected open-circuit voltages Vo corresponding to setting currents Ia to Ix, acquiring predicted reaching voltages Va to Vx corresponding to the setting currents Ia to Ix, and creating a current-voltage curve. The corrected open-circuit voltages Vo are obtained to predict available maximum currents I—target in a particular time t2. The predicted reaching voltages Va to Vx are acquired based on corrected physical and chemical resistances Ro and Rp, and the corrected open-circuit voltages Vo. The current-voltage curve is creased based on the setting currents Ia to Ix and the predicted reaching voltages Va to Vx to acquire upper and lower limit voltages Vmax and Vmin, and upper and lower limit currents Imax and Imin at a temperature whereby assigning these limit currents to available maximum currents I—target in charging and discharging operations, respectively.




rre

System and method for non-sinusoidal current waveform excitation of electrical generators

An electrical generator includes a stator having fractional-slot concentrated windings and a rotor having field windings. A drive is provided having a circuit to control current flow to the field windings and a controller to input an initial DC field current demand to the circuit to cause the circuit to output an initial DC field current representative of a DC field current demand that would cause an electrical generator having sinusoidal stator windings to output a desired AC power. The controller receives feedback on the magnetic field generated by the initial DC field current, isolates an ideal fundamental component of the magnetic field based on the feedback and to generate a modified DC field current demand, and inputs the modified DC field current demand to the circuit, thereby causing the circuit to output an instantaneous non-sinusoidal current to the field windings to generate a sinusoidal rotating air gap magnetic field.




rre

Regulator/brush-holder assembly for a motor-vehicle alternator, manufacturing process and corresponding alternator

The regulator/brush-holder assembly (1) comprises a support (2) and an electrical circuit (5, 6) comprising a regulating element (5) connected by microwires to a trace circuit (6). The electrical circuit further includes a filtering circuit (10) separate from the regulating element and connected by microwires to the trace circuit. According to one particular embodiment, the filtering circuit comprises an insulating substrate (11) and surface-mounted components (C1, C2, S1, S2, V). A ground plane (19) and/or one or more ground pads may be provided for connection to a ground trace of the trace circuit. The filtration frequencies of the filter circuit extend from 100 kHz to 1 GHz.




rre

Electromagnetic device for generating electrical current and methods thereof

An AC current generator for generating an CA current and method therefor and includes a stator and a rotor. The stator includes an outer shell of non-magnetic material enclosing an evacuated chamber and having a distribution of a plurality of ferromagnets attached thereto. The rotor includes an inner core of non-magnetic material located at a stability location within said evacuated chamber and having a distribution of a plurality of diamagnets attached thereto. In addition, the AC current generator includes at least one magnetic flux detection unit located within at least one magnetic field generated by at least one group of ferromagnets of the plurality of ferromagnets. Displacing the rotor from the stability location towards the at least one group of ferromagnets generates a change in magnetic flux in the magnetic field thereby generating an AC current in the at least one magnetic flux detection unit.




rre

Direct current brushless motor

A motor includes a frame, a shaft rotatably mounted onto the frame, and at least one disc mounted onto the shaft. At least one permanent magnet is mounted on the disc, and at least one electromagnet and at least one coil are mounted to the frame in rotational magnetic proximity to the permanent magnet. A battery is connectable to the electromagnet and the coil for energizing the electromagnet and for receiving electrical current from the coil for charging the battery. A relay switch controls the transmission of electrical power from the battery to the electromagnet. A sensor generates a signal to the relay switch to activate electrical power to the electromagnet upon sensing that the permanent magnet is positioned with respect to the electromagnet such that a magnetic force generated by the electromagnet would be effective for inducing movement of the permanent magnet and consequent rotation of the disc.




rre

Current balance control in converter for doubly fed induction generator wind turbine system

Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can monitor the bridge current of each of the bridge circuits coupled in parallel and generate a feedback signal indicative of the difference in bridge current between the parallel bridge circuits. Command signals for controlling the bridge circuits can then be developed based on the feedback signal to reduce current imbalance between the bridge circuits. For instance, the pulse width modulation of switching devices (e.g. IGBTs) used in the bridge circuits can be modified to reduce current imbalance between the parallel bridge circuits.




rre

Current collector and energy transmission system

The invention relates to a current collector 1 for a device 2 that can be displaced with and against the driving direction F along a conductor line 5, comprising a current collector cart 8 for the guided displacement along a guide element 9 of the conductor line 5, and an energy transmission system. The invention solves the problem of providing a current collector and an energy transmission system, which enable an energy-conserving, contact-reliable and damage-free displacement of the current collector along a conductor line and a simple connection of the current collector to the conductor line, in that at least one first lever assembly 12L between the current collector cart 8 and displaceable device 2 is provided with a first drive lever arm 13L, the first end of which can be connected in a rotatable manner to the displaceable device 2 and the second end of which is connected in a rotatable manner to a second end of at least one first tension lever arm 14L, the first end thereof being connected in a rotatable manner to a current collector cart, wherein a first adjustment drive 15L is provided in order to be able to move the current collector cart 8 between a retracted position on the displaceable device 2 and an extended position away from the displaceable device 2, and wherein a first locking device 16; 18L; 15L is provided, in order to lock the first drive lever arm 13L when displacing the displaceable device 2 in the driving direction F in a predetermined extended position.




rre

Transport vehicle equipped with current collector

A transport vehicle equipped with a current collector, includes: a vessel to load a load; a current collector that extends to receive electric power from an overhead line and contracts and retracts so as to be disposed away from the overhead line; and a vehicle body that rotationally drives driving wheels by at least one of the electric power from the current collector and a self-propelled driving source and on which the vessel is placed; a pantograph position detector that detects a relative position of the current collector and the overhead line; and a control device that controls a driving direction of the vehicle body or gives an instruction of information with which a direction in which the vehicle body is to be operated can be recognized, so that the relative position is brought to a position where the current collector and the overhead line are connected.




rre

Animal deterrent device for joggers

An animal deterrent device consists essentially of a palm-sized handle of six to eight inches in length for hand gripping and defining a housing within the central portion thereof to house a plurality of generally rigid tubular sections telescoping one within the other within the housing and being adhered thereto by a fusible adhesive adhering an outer sleeve of the telescoping sections. A pocket clip is attached to the handle and the plurality of sections when fully protracted extending to a length of about three feet with the overall apparatus weighing less than six ounces. The apparatus may additionally have a loop attached for hand transporting of the apparatus. The apparatus is utilized by a jogger upon an attacking animal by extending the telescoping sections to form a rigid whip-like structure so as to engage the attacking animal with the extended telescoping sections.




rre

Structures for improving current carrying capability of interconnects and methods of fabricating the same

Interconnect structures and methods of fabricating the same are provided. The interconnect structures provide highly reliable copper interconnect structures for improving current carrying capabilities (e.g., current spreading). The structure includes an under bump metallurgy formed in a trench. The under bump metallurgy includes at least: an adhesion layer; a plated barrier layer; and a plated conductive metal layer provided between the adhesion layer and the plated barrier layer. The structure further includes a solder bump formed on the under bump metallurgy.




rre

Methods and apparatus for applying periodic voltage using direct current

Methods and apparatus for applying pulsed DC power to a plasma processing chamber are disclosed. In some implementations, frequency of the applied power is varied to achieve desired processing effects such as deposition rate, arc rate, and film characteristics. In addition, a method and apparatus are disclosed that utilize a relatively high potential during a reverse-potential portion of a particular cycle to mitigate possible nodule formation on the target. The relative durations of the reverse-potential portion, a sputtering portion, and a recovery portion of the cycle are adjustable to effectuate desired processing effects.




rre

A/D converter and solid-state imaging apparatus with offset voltage correction

Provided is an A/D converter including an input terminal, a reference signal line for supplying a reference signal which changes temporally, a comparator, a correction capacitor connected to an inverting input terminal of the comparator; and an output circuit which outputs digital data corresponding to an analog signal input to the input terminal. In a first state in which a total voltage of a first analog signal and an offset voltage of the comparator is held in the correction capacitor, a second analog signal input to the input terminal is supplied to a non-inverting input terminal of the comparator, and the second analog signal or the total voltage is changed using the reference signal, thereby outputting, from the output circuit, digital data.




rre

Image sensors having variable voltage-current characteristics and methods of operating the same

Image sensors and methods of operating the same. An image sensor includes a pixel array including a plurality of pixels. Each of the plurality of pixels includes a photo sensor, the voltage-current characteristics of which vary according to energy of incident light, and that generates a sense current determined by the energy of the incident light; a reset unit that is activated to generate a reference current, according to a reset signal for resetting at least one of the plurality of pixels; and a conversion unit that converts the sense current and the reference current into a sense voltage and a reference voltage, respectively.




rre

Method of investigating and correcting aberrations in a charged-particle lens system

A system of investigating aberrations in a charged particle lens system, wherein a charged particle beam is directed from a multitude of directions through a pivot point on a sample stage. An image figure is recorded for each of multiple focus settings at each beam direction setting, creating a set of registered images. This set of images is compared to reference images to derive aberrations present in the lens system without the use of an amorphous sample present.




rre

Apparatus for correcting belt-meandering for secondary battery

An apparatus of correcting belt-meandering for a secondary battery is disclosed. In one embodiment, the apparatus includes i) upper and lower rollers configured to receive a base material therebetween, wherein the base material comprises positive and negative electrode materials and an insulating material interposed between the electrode materials and ii) a driver portion configured to rotate the upper and lower rollers such that the base material is transferred in a first direction during the rotation. The apparatus may also include i) a support portion configured to support shafts of the driver portion and the upper and lower rollers and ii) a transverse moving mechanism configured to move the support portion in a second direction substantially perpendicular to the first direction.




rre

Circuit breaker with parallel rated current paths

A circuit breaker is provided which can be filled with a quenching gas and which has two contact arrangements, which can be moved relative to one another and along a longitudinal axis of the circuit breaker. The contact arrangements form a arcing contact system and a rated current contact system connected electrically in parallel with it. One of the contact arrangements includes inner rated current contacts and outer rated current contacts of the rated current contact system, where the inner rated current contacts overhang the outer rated current contacts in the direction of the longitudinal axis, and the outer rated current contacts coaxially surround the inner rated current contacts. The circuit breaker has a high current carrying capability as well as a reliable switching-on and -off behavior, such as during and after the occurrence of a short-circuit current in the circuit breaker.




rre

Electric current switching apparatus

To provide an electric current switching apparatus having a fixed-side electrode unit and a movable-side electrode unit that are arranged to align central axes thereof with each other and to face each other, in which a movable contact provided in the movable-side electrode unit reciprocates on the central axis to contact or separate from a fixed-side contact provided in the fixed-side electrode unit, thereby switching electric current flowing through these electrode units, the electric current switching apparatus including a plurality of permanent magnets that are provided in at least one of the fixed-side electrode unit and the movable-side electrode unit, that have bodies arranged on the central axis to align magnetizing directions thereof with the central axis, and that are arranged to cause same poles of adjacent ones of the permanent magnets to face each other as if butting with each other.




rre

High current vacuum interrupter with sectional electrode and multi heat pipes

An electrode assembly for a circuit breaker is provided. The electrode assembly includes a conductive assembly and a heat transfer assembly. The conductive assembly includes a stem portion and a contact portion. The heat transfer assembly includes a number of elongated bodies, a first heat transfer surface, and a second heat transfer surface. The first heat transfer surface is disposed on the conductive assembly. Each heat transfer assembly body includes a second heat transfer surface. Each heat transfer assembly body is coupled to the conductive assembly with the first heat transfer surface coupled to a number of second heat transfer surfaces.




rre

System and method for tactile currency identification

A tactile orientation indicator is positioned along the periphery of a bill, and a tactile denomination indicator is positioned elsewhere along the periphery of the bill. The user of the bill may then use their tactile senses to feel along the edges of the bill to orient the bill to a pre-determined orientation based on the location of the orientation indicator. The user then feels along the periphery of the bill to locate the denomination indicator. Using a predetermined system associating the location of the denomination indicator with a particular bill denomination, the user may then identify the denomination of the bill even if blind or otherwise visually impaired.




rre

Method and circuit arrangement for controlling current in motors

A method and circuit arrangement for controlling the motor current in an electric motor, in particular a stepper motor, by a chopper method is provided. In the method/circuit arrangement, the motor is operated with a coil current that follows a target coil current substantially more accurately at least at the zero crossing of the coil current. The method/circuit arrangement provides a good symmetry of the sinusoidal wave shape of the coil current with respect to the zero crossing of the coil current. The method is achieved in particular by the active control of the coil current both in the direction of a predefined target coil current and opposite the direction of the predefined target coil current with respect to upper or lower desired current values and a lowering or increasing of the upper or lower desired current values.




rre

Operational transconductance amplifier with increased current sinking capability

An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node. A voltage sensing circuit has a first input coupled to the input terminal and a second input coupled to the output terminal. An output of the voltage sensing circuit is coupled to the control terminal of the current sinking transistor. The voltage sensing circuit functions to sense a rise in the voltage at the output terminal which exceeds the voltage at the input terminal, and respond thereto by activating the current sinking transistor.




rre

System and method for pre-charging a current mirror

A system for pre-charging a current minor includes a controller configured to provide a first current and an additional current to a current minor to rapidly charge a capacitance associated with the current minor based on a reference voltage or control signals. A power amplifier module includes at least one current minor and a controller. A capacitor is coupled to the current minor. The controller provides a bias current in an amount proportional to an input to a voltage-to-current converter. The controller receives a control signal that directs the controller to apply one of a pre-charge voltage and a nominal voltage to the voltage-to-current converter.




rre

Thermally coupled current limiter

This disclosure relates generally to radio frequency (RF) amplification devices and methods of limiting an RF signal current. Embodiments of the RF amplification device include an RF amplification circuit and a feedback circuit. The RF amplification circuit is configured to amplify an RF input signal so as to generate an amplified RF signal that provides an RF signal current with a current magnitude. The feedback circuit is used to limit the RF signal current. In particular, a thermal sense element in the feedback circuit is configured to generate a sense current, and thermal conduction from the RF amplification circuit sets a sense current level of the sense current as being indicative of the current magnitude of the RF signal current. To limit the RF signal current, the feedback circuit decreases the current magnitude of the RF signal current in response to the sense current level reaching a trigger current level.




rre

Brake booster for an automotive brake system and corresponding automotive brake system

A brake booster with regenerative brake force generation comprising a force input element coupled to a brake pedal. A chamber arrangement having a vacuum chamber and a working chamber that are separated from one another by a movable wall. A control valve actuated in accordance with a displacement of the force input element. The working chamber is connectable selectively to the vacuum chamber and the atmosphere to generate and reduce a differential pressure at the movable wall. The control valve has a control valve housing that is connected for joint movement to the movable wall. In a first actuation phase of the brake booster from its rest position, the force input element is displaceable relative to the control valve housing by an idle travel, in which the control valve remains non-actuated to suppress a build-up of a differential pressure at the movable wall.




rre

Method for error correction in synchronized superposed operation of servomotors

In a method for performing a synchronized superposed operation of two servomotors, controllers for the servomotors perform the control for achieving the synchronized superposed operation by: calculating, for each of the servomotors, the difference, or differences, between the ideal speed and/or position deviations obtained from a control command and the actual speed and/or position deviations obtained from the rotation of the servomotor; calculating a speed correction quantity, or a speed correction quantity and a current correction quantity, from the discrepancy, or discrepancies, between the differences calculated for both of the servomotors; and adding the correction quantity, or quantities, to a speed command, or to a speed command and a current command, given to the subsidiary shaft side. Thus, a synchronized superposed operation of servomotors in which speeds and responses of the main shaft and the subsidiary shaft are well balanced therebetween can be achieved.




rre

Integer representation of relative timing between desired output samples and corresponding input samples

In general, this disclosure describes techniques for changing a sampling frequency of a digital signal. In particular, the techniques provide a more accurate way to determining a relative timing between a desired output sample and a corresponding input sample using a non-approximated integer representation of the relative timing. The relative timing between the desired output sample and corresponding input sample may be represented using a first component that identifies a latest input sample of the digital signal used to generate intermediate samples, a second component that identifies an intermediate sample, and a third component that identifies a timing difference between the desired output sample and the intermediate sample. Each of the components may be recursively updated using non-approximated integer values.




rre

Method for correcting calibration values in a calibration table of computed tomography apparatus

In a method for correcting a calibration table T(n,k) of a CT apparatus that contains calibration values, the CT apparatus having a detector system with N≧2 rows of detector elements following one another in the z-direction that include a first active row of detector elements in the z-direction and a last active row of detector elements in the z-direction, for correcting the calibration values of the aforementioned first and last active rows of detector elements, a reference vector R(k) is produced, the error is determined with respect to the first and last active rows of detector elements, and the error F(n,k) of the first and last active rows of detector elements is subtracted from the corresponding calibration values of the calibration table T(n,k) for determining corrected calibration values Tcor(n,k) with respect to the first and last active rows of detector elements.




rre

Rotary machine with pistons and a barrel

The invention relates to a rotary machine with pistons (22) and a turret (25), including: —a frame (2), through which a shaft (1) extends, having a geometrical axis x-x' and mounted in a stationary manner relative to the frame (2); —a thrust plate (9) rotatably mounted on the shaft (1); —an oscillating plate (15) bearing on the thrust plate (9); —a torsion bar (18), a first end of which is pivotably connected to the frame (2) and a second end of which is pivotably connected to the oscillating plate (15); —a spherical female bushing (14) rigidly connected to the oscillating plate (15) and pivotably connected around a spherical male knuckle centered on the shaft (1), the knuckle including a spherical male bushing (10) rotatably mounted relative to the shaft (1), characterized in that the rotary machine includes a means for rotating the spherical male bushing (10) about the geometric axis x-x'.




rre

Central datum feature on railroad coupler body and corresponding gauges

A coupler body for a railcar coupler, said coupler body comprising at least one central datum feature that does not wear during coupler use.




rre

Using synchronous converter in asynchronous mode to prevent current reversal during battery charging

Efficiency of a switch mode power supply (SMPS) is optimized by operating the SMPS in an asynchronous mode when current being supplied therefrom is less than a certain current value and operating the SMPS in a synchronous mode when the current being supplied therefrom is equal to or greater than the certain current value. When the SMPS is operating in the synchronous mode high-side and low-side power transistors alternately turn on and off. When the SMPS is operating in the asynchronous mode only the high-side power transistor turns on and off and the low-side power transistor remains off. When charging a battery with the SMPS discharge of the battery is eliminated when operating in the asynchronous mode at a low current output.




rre

Voltage-to-current sensing circuit and related DC-DC converter

The present disclosure is directed to a voltage-to-current sensing circuit having a bias terminal configured to receive a reference voltage, an offset terminal configured to receive an offset current, and an operational amplifier configured to output a low voltage signal. The device includes a first amplifier having first and second high voltage inputs configured to receive a first voltage difference across a sense component on a high voltage line and to generate a first current, a second amplifier having first and second low voltage inputs configured to receive a second voltage difference between the bias terminal and the offset terminal and to generate a second current, a summing circuit configured to provide an intermediate voltage corresponding to a sum of the first and the second currents, and a low-voltage transistor coupled to an output of the amplifier and controlled by the intermediate voltage to generate the output current.




rre

Interleaved two-stage power factor correction system

Methods and systems are described for providing power factor correction for high-power loads using two interleaved power factor correction stages. Each power factor correction stage includes a controllable switch that is operated to control the phasing of each power factor correction stage. The phasing of output current from the second power factor correction stage is shifted 180 degree relative to the output current from the first power factor correction stage.




rre

System for eliminating current surges in electronic systems and equipment having intermittent current consumption

The invention relates to a system for eliminating current surges that includes a first voltage regulator (7) having a current limit programmable to a value (I(limit)) that depends on the value of the intermittent current surges (IO(surge)) required by the intermittent load (3) and the relationship thereof to the work cycle, a second voltage regulator (9), a condenser (4) connected between the first and second regulators (7, 9), that loads when the current is no longer required and that unloads when there is a need for output current to provide current to the second regulator (9) which absorbs the changes in voltage produced by the loading/unloading of the condenser and provides a constant voltage for any value of the required output current surge, independently of voltage changes in the condenser (4), and a control loop between a sensor for the output current provided to the load and an input limit (15) for the input current (II) in the first regulator (7). Thus, the input current (I(limit)) (1) and the output voltage (VLoad) are constant for any value of the output current surge (IO(surge)).




rre

Voltage regulator with current limiter

A voltage regulator includes an amplifier having a first input coupled to a first reference voltage and a second input coupled to a voltage feedback signal; a multiplexer having a first input coupled to an output of the amplifier, a second input coupled to a voltage clamp signal, and a control input; and a control circuit having a first input coupled to an over current indicator, a second input coupled to a no over voltage indicator, a third input coupled to a timer signal, and an output coupled to the control input of the multiplexer.




rre

Current mirror circuits in different integrated circuits sharing the same current source

A current mirror circuit, receiving an input current and outputting a plurality of mirroring currents, comprising: a first transistor, wherein a control terminal and a first terminal of the first transistor are connected to a first mirroring current of the input current; at least one second transistor, wherein a control terminal and a first terminal of the at least one second transistor are connected to the at least one second mirroring current of the input current; and a plurality of third transistors, outputting the plurality of mirroring currents from first terminals of the plurality of third transistors, wherein control terminals of the plurality of third transistors are connected to control terminals of the first transistor and the at least one second transistor. The first transistor, the at least one second transistor and the plurality of third transistors are identical.




rre

Method for shaping a barrel spring made of metallic glass

The invention relates to a method for shaping a barrel spring made of a unitary ribbon of metallic glass that comprises calculating the theoretical shape to be given to said unitary ribbon of metallic glass so that each segment, once the spring is fitted in the barrel, is subjected to the maximum bending momentum, shaping said ribbon by imparting bends thereto characteristic of said free theoretical shape in order to take into account a potential reduction of the bends once the ribbon is released, relaxing the ribbon in order to set the shape thereof by heating the same, and cooling down said ribbon.




rre

Lead pin correction device and lead pin correction method

A lead pin correction device includes a holding unit holding an electronic device having lead pins; a pressing unit pressing the electronic device held by the holding unit in an extending direction of the lead pins; and a correction fixture including holes having a shape corresponding to a shape of the lead pins after correction. Further, the shape of the lead pins is corrected so as to fit the shape of the holes by inserting the lead pins into the holes by pressing the electronic device with the pressing unit while distal ends of the lead pins are inserted into the holes, the electronic device being held by the holding unit.




rre

Method for operating a railway section and corresponding railway section

A method for operating a railway section that includes section elements, which are each actuated by a processor that is reliable in terms of signaling and cyclically carries out a test routine. A railway section is configured for carrying out the method. In order to save energy and cost, the processor is operated selectively in active mode or sleep mode. From the sleep mode the processor is switched to the active mode for the duration of the test routine by way of a timer logic element that is reliable in terms of signaling.




rre

Disk-shaped bullet, bullet case and firearm with rectangular barrel for disk-shaped bullet

A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet fitting within the internal bore may be fired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.




rre

Disk-shaped bullet, bullet case and firearm with rectangular barrel for disk-shaped bullet

A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet fitting within the internal bore may be fired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.