Abstract: A method and a circuit arrangement for feeding n LED units (LED1 to LED5) of a lighting unit of a motor vehicle by way of a controlled power source (5) from a voltage source (2) having a fluctuating operating voltage (UB), in which the LED units (LED1 to LED5) are interconnected, and in particular k LED units (LED1 to LED5) of a series connection are short-circuited, when the operating voltage (UB) drops, taking a stored weighting with respect to the priority assigned to individual LED units into consideration, wherein current continues to flow simultaneously through (n?k) LED units.

Abstract: A Josephson parametric converter is provided. The Josephson parametric converter includes a multi-Josephson junction ring modulator having arrays of N Josephson junctions arranged in a ring configuration with ring nodes inter-dispersed between the arrays. The multi-Josephson junction ring modulator further has a center node inter-connecting the ring nodes. N is an integer having a value greater than one. The Josephson parametric also includes a first and a second resonator formed from lumped-element capacitors that shunt the multi-Josephson junction ring modulator and respectively enable a first and a second mode of the Josephson parametric converter.

Abstract: The embodiments of disclosure disclose a method and device for transmitting and receiving wireless power. The method includes: switching a state of a resonance element used for transmitting and receiving electromagnetic waves to an electromagnetic wave transmission state; boosting a first direct current output by a mobile device to a second direct current having a predetermined voltage; inverting the second direct current to an alternating current; converting the alternating current into an electromagnetic wave and transmitting the electromagnetic wave, wherein the electromagnetic wave is used for charging a to-be-charged device. The embodiments of the disclosure provide a solution for wirelessly charging peripherals through a terminal and thus solves a problem that there is no solution provided to wirelessly charge peripherals through the terminal in the related art.

Abstract: An integrated circuit has at least two power domains. A first power domain has circuitry coupled between a first power supply terminal and a second power supply terminal. A second power domain has circuitry coupled between a third power supply terminal and a fourth power supply terminal. A complementary voltage regulator includes N-type and P-type voltage regulators. The N-type voltage regulator is coupled between the first and third power supply terminals and controls a first voltage level at the second power supply terminal. The P-type voltage regulator is coupled between the third and fourth power supply terminals and controls a second voltage level at the third power supply terminal. The N-type voltage regulator produces a mid-level supply voltage to the P-type regulator and a “ground” for the circuits in the first power domain. The P-type regulator circuit produces a “ground” for the N-type regulator and a mid-level supply voltage for the circuits in the second power-domain.

Abstract: This invention provides a mobile terminal and a network searching method for overcoming crystal aging issue. The method includes the step of: searching network by invoking parameters stored in a first area of a volatile RAM; if the searching is failed, searching network by invoking parameters stored in a second area of the volatile RAM; if the searching is failed and the number of network searches is larger than a first predetermined value, reacquiring parameters and searching network; if the searching is succeeded, updating the parameters in the first area with the reacquired parameters. By this method, the invention can effectively solve the problems caused by crystal aging or defective crystals, and increases the robustness of the network searching.

Abstract: A switching regulator may include an inductor housing, a board, and one or more electrical components. The inductor housing may house an inductor and one or more wires. The board may include one or more board traces and one or more solder pads. The electrical components may include one or more chips, capacitors, voltage sources, and/or other electrical components. The inductor housing may be attached to the board to create a space between the inductor housing and the board. The space may be created underneath the inductor housing and above the board. One or more electrical components may be attached to the board. One or more electrical components may be disposed within the space.

Abstract: A charging control device includes a capacitor, a comparison unit and a switching unit. The capacitor is charged with a voltage converted from power received from a wireless power sending device. The comparison unit compares the voltage of the capacitor with a reference voltage, and generates an output signal according to the result of the comparison. The switching unit is connected to the front end of the capacitor and is switched by the output signal from the comparison unit so as to control whether to supply the converted voltage to a load terminal.

Abstract: A Josephson parametric converter is provided. The Josephson parametric converter includes a multi-Josephson junction ring modulator having arrays of N Josephson junctions arranged in a ring configuration with nodes inter-dispersed between the arrays. N is an integer having a value greater than one. The Josephson parametric converter includes a first and a second resonator formed from lumped-element capacitors that shunt the multi-Josephson junction ring modulator and respectively enable a first and a second mode of the Josephson parametric converter.

Abstract: A qubit system is provided wherein successive sets of M RF pulses are generated simultaneously, for application to qubit circuits in a plurality of N groups of M qubit circuits. M switching multiplexer circuits are used, each to pass a respective one of the M RF pulses in the set to a selected one of a plurality of N M to one RF combiners in a multiplexing mode. Combined RF pulses at M different RF frequencies are transmitted from each of the N combiners to a transmission structure for a respective one of the groups. Individual ones of the combined RF pulses are coupled from the transmission structure for the group to respective ones of the qubit circuits of the groups via respective frequency selective filters. In a broadcast mode the M switching multiplexer circuits are used to transmit the simultaneous pulses to all of RF combiners.

Abstract: A transmitter includes: a driver circuit having a pull-up circuit, and a pull-down circuit, coupled to an output pad; a digitally controlled impedance (DCI) calibration circuit having a first reference driver, a second reference driver, and a reference resistor, the DCI calibration circuit configured to: generate a value for a first code by calibrating a first impedance in the first reference driver against the reference resistor; generate a value for a second code by calibrating a second impedance in the second reference driver against the first impedance; and adjust the value of the first code to match the first impedance with the second impedance; and a pre-driver circuit configured to supply the first code and the second code to the driver circuit for adjusting output impedance of the pull-up circuit and the pull-down circuit.

Abstract: A method for smoothing current consumed by an electronic device is based on a series of current copying operations and on a current source delivering a reference current. The reference current is delivered in such a manner that current consumed as seen from the power supply depends on the reference current.

Abstract: A system for adjusting qubit frequency includes a qubit device having a Josephson junction and a shunt capacitor coupled to electrodes of the Josephson junction. A cantilevered conductor is separated from the shunt capacitor by a spacing. An adjustment mechanism is configured to deflect the cantilevered conductor to tune a qubit frequency for the qubit device.

Abstract: The invention relates to a method for operating a converter in an energy distribution system, wherein, by means of the converter, an electrical energy provided by a source is fed into an AC electricity network at a coupling point (E) or electrical energy is drawn from the AC electricity network at the coupling point (E), wherein the AC electricity network is coupled to further converters for feeding in or drawing electrical energy, wherein the converter has an inverter provided with power switches in order to provide an electrical variable, comprising providing one or a plurality of system state variables indicating a system state of the electricity network, selecting one of a plurality of commutation patterns depending on the one or the plurality of system state variables, and driving the inverter according to the selected commutation pattern.

Abstract: A low-voltage bandgap reference circuit includes a current source supplying a reference voltage rail. The circuit further includes a Vbe loop branch coupled to the reference voltage rail to obtain a Vbe voltage with a negative temperature coefficient. The circuit further includes a ?Vbe loop branch to obtain a ?Vbe voltage, the ?Vbe loop branch employing a fractional Vbe voltage, to provide a reduced, positive temperature coefficient. The circuit further includes a feedback amplifier that sets identical voltages from the loop branches on inputs of the amplifier A to regulate an output voltage of the circuit on the reference voltage rail at a temperature-compensated value below 1.2V.

Abstract: Energy-filtered cold electron devices use electron energy filtering through discrete energy levels of quantum wells or quantum dots that are formed through band bending of tunneling barrier conduction band. These devices can obtain low effective electron temperatures of less than or equal to 45K at room temperature, steep electrical current turn-on/turn-off capabilities with a steepness of less than or equal to 10 mV/decade at room temperature, subthreshold swings of less than or equal to 10 mV/decade at room temperature, and/or supply voltages of less than or equal to 0.1 V.

Abstract: Systems and apparatuses for a configurable, temperature dependent reference voltage generator are provided. An example apparatus includes control logic configured receive temperature data, and produce a signal, based on the temperature data, indicative of the temperature data, a temperature dependence and a temperature slope. The apparatus may also include a temperature slope reference generator configured to produce a reference voltage having the temperature dependence and the temperature slope, based on the signal from the control logic.

Abstract: In described examples, a multi-stage charge pump includes first, second and third charge pump stages connected in series. Each of the first, second and third charge pump stages includes a charge pump circuit of a first type that increases an input signal of a respective charge pump circuit by up to a given amount. The multi-stage charge pump also includes a level shifter that swings a level clock signal between a voltage of an output signal of the third charge pump stage and one of an offset voltage and ground. The multi-stage charge pump further includes a charge pump circuit of a second type that increases the voltage of the output of the third charge pump stage by up to another amount and provides an output and the other amount is set by the level shifter. Also, the multi-stage charge pump includes a charge pump circuit of a third type.

Abstract: The invention proposes a method for distributing a signal to each block Bj of a series of N adjacent blocks of identical design in an electronic circuit. It proposes, in an identical fashion for each of the N blocks, placing a timing delay circuit MUX-DELj on the path for conveying a signal Sc from the input INcj of the block to an internal electrical node Ndj of the block for this signal Sc; providing for the timing delay circuit to supply N delayed signals corresponding to N different timing delays ?f1, . . . ?fj, . . . ?fN separated by an increment of elementary duration ?t that corresponds to the elementary delay ?t for transit of a block introduced into a conductive line; and selecting the delayed signal corresponding to the applicable timing delay according to the block in question, by means of an index signal propagated through the N blocks, and which is incremented or decremented on passage through each block.

Abstract: A bipolar output charge pump circuit having a network of switching paths for selectively connecting an input node and a reference node for connection to an input voltage, a first pair of output nodes and a second pair of output nodes, and two pairs of flying capacitor nodes, and a controller for controlling the switching of the network of switching paths. The controller is operable to control the network of switching paths when in use with two flying capacitors connected to the two pairs of flying capacitor nodes, to provide a first bipolar output voltage at the first pair of output nodes and a second bipolar output voltage at the second pair of bipolar output nodes.

Abstract: A Josephson parametric converter is provided. The Josephson parametric converter includes a multi-Josephson junction ring modulator having arrays of N Josephson junctions arranged in a ring configuration with nodes inter-dispersed between the arrays. N is an integer having a value greater than one. The Josephson parametric converter further includes a first and a second resonator formed from lumped-element capacitors that shunt the multi-Josephson junction ring modulator and respectively enable a first and a second mode of the Josephson parametric converter. The Josephson parametric converter also includes a first and a second LC circuit for respectively coupling the first and the second resonator to external feedlines.