Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

Abstract: In some examples, this disclosure describes a method of operating a plurality of battery management circuits of a battery management system associated with an electric device. The method may comprise adjusting a first trim value associated with a first battery management circuit during operation of the electric device, and adjusting a second trim value associated with a second battery management circuit during operation of the electric device. The method may also comprise sinking a first amount of current in the first battery management circuit based on the first trim value; and sinking a second amount of current in the second battery management circuit based on the second trim value, wherein sinking the first amount of current and sinking the second amount of current causes the first battery management circuit and the second battery management circuit to consume substantially similar amounts of current.

Abstract: Aspect of the invention relate to apparatuses and methods for backup power systems. The apparatus comprises a communications enclosure. The communications enclosure comprises a generator module. The generator module comprises a generator and a rack mount.

Abstract: A parasitic capacitance mitigation circuit for a relaxation oscillator. The parasitic capacitance mitigation circuit includes a first switch coupled across a parasitic capacitance of a resistive sensing element and a second switch coupled between the parasitic capacitance and a reference voltage node. The parasitic capacitance mitigation circuit includes a pulse generator configured to: monitor a voltage across the parasitic capacitance; detect a voltage transient across the parasitic capacitance; and generate a pulse control signal in response to detecting the voltage transient. In response to the pulse control signal, the first switch opens and the second switch closes to discharge the parasitic capacitance through the second switch.

Abstract: An asymmetric RF switch for micro or millimeter waves, with each shunt or passthrough stack having two or more series FETs of approximately same channel width. A first lowest loss path, having only transmission line, passing through a second node, between common and first selectable ports. A second path, between the common and second selectable ports, passing through the second node, a passthrough stack, and a first node. Isolating the second selectable port from the first path by an on state of a second shunt stack connected to the first node, and an off state of the passthrough stack. Isolating the first selectable port from the second path by having an on state of the first shunt stack, or a path length, between the second node and the ground of a first shunt stack coupled to the second node, one quarter the wavelength of signals over the second path.

Abstract: Systems and methods for managing the distribution of electrical power are disclosed. The system can maintain a status of each account of a plurality of accounts. Each account can correspond to an electrical power generation device, an electrical power consumption device, and an electrical power transmission device. The system can generate a first record object in response to the generation of a unit of power. The system can identify a first path identifying a source device and a destination device to transmit the unit of power. The system can generate a control signal to route the unit of power from the source device to the destination device. The system can update an event tracker to indicate the routing of the unit of power. The system can generate a second record object corresponding to the destination device. The system can update a second account to include the second record object.

Abstract: A method for performing supplementary charging on a low-voltage battery based on redundancy power conversion, includes: determining whether supplementary charging is required for a first low-voltage battery or a second low-voltage battery in a parked state; determining whether supplementary charging mode entering using a voltage of a high-voltage battery is possible when it is determined that the supplementary charging is required; and converting and supplying a charging voltage of another low-voltage battery to a low-voltage battery that requires supplementary charging among the first low-voltage battery or the second low-voltage battery when a condition that does not allow the supplementary charging mode entering is determined.

Abstract: A microwave synchronisation system comprising an oscillator configured to provide a microwave signal, and an RF cavity configured to resonantly enhance the microwave signal to form a resonantly enhanced electromagnetic field, an electro-optic modulator connected to the RF cavity and configured to receive a microwave signal from the RF cavity, and an optical interferometer which includes the electro-optic modulator and is configured to provide an output indicative of a phase difference between a pulsed laser beam and the microwave signal received from the RF cavity, wherein the output from the interferometer is connected to an input of the oscillator to provide feedback through which electromagnetic fields in the RF cavity can be synchronised with the pulsed laser beam.

Abstract: The present disclosure relates to an oscillator, such as a Digitally Controlled Oscillator (DCO), having first capacitor banks coupled to a first path and a second path, the first path connecting a first node to a first output node, and the second path connecting a second node to a second output node, and second capacitor banks coupled to a third path and a fourth path, the third path being connected to the first node, the fourth path being connected to the second node, the first and second paths being separate from the third and fourth paths, and the second capacitor banks including at least one modulation capacitor bank.

Abstract: A voltage controller detects a voltage spike in an electrical signal received from an electrical power source. The voltage controller is implemented using a single-loop control system in a stationary reference frame. The electrical signal includes voltage harmonics caused by a non-linear or unbalanced load. The voltage controller includes a phase-compensated harmonic regulator that regulates the voltage harmonics present in the electrical signal and receives a feedback voltage of the single-loop control system. The feedback voltage is a delayed version of an instantaneous voltage of the electrical signal. The instantaneous voltage is sub-transiently stabilized into a steady-state voltage based on the feedback voltage. Sub-transiently stabilizing the instantaneous voltage is performed within a single cycle after the voltage spike is detected. The steady-state voltage has a total harmonic distortion less than a threshold total harmonic distortion and the steady-state voltage has a balanced sinusoidal waveform.

Abstract: Disclosed solutions relate to electrical inverters. An inverter may further include may include a power module including phase switches, a first negative DC power tab, and a second negative DC power tab. The first negative DC power tab and the second negative DC power tab are connected to one or more of the phase switches. The inverter may further include a positive DC power tab positioned between the first negative DC power tab and the second negative DC power tab and connected to the phase switches. The inverter may further include one or more phase AC power tabs to receive AC power from the phase switches.

Abstract: A battery module for an electrically-driven aircraft is disclosed. The battery module can house multiple battery cells and prevent a battery cell fire or explosion from one battery cell from damaging neighboring battery cells. The battery module includes: a housing; a plurality of cell tubes housing a plurality of battery cells, each cell tube having an elongated surface and being positioned in the housing spaced apart from each other; a heat absorbing member comprising a heat absorbing material, wherein the heat absorbing member is arranged between at least two neighboring cell tubes; and the heat absorbing material being configured to undergo a phase transition from an initial state of matter into a final state of matter when at least one of the plurality of cell tubes exceeds a predetermined temperature in case of explosion or fire of at least one of the plurality of battery cells.

Abstract: An antenna device used in a contactless power transmission system includes a first resonant antenna having a first impedance and a second resonant antenna having a second impedance different from the first impedance.

Abstract: A method for managing the use of an on-board motor vehicle battery charger. The vehicle including a supply battery, the on-board charger being connected, on the one hand, to the battery and being intended to be connected, on the other hand, to an electrical power supply network that is external to the vehicle and is able to provide a three-phase voltage. Each network phase is characterized by a maximum overall usage power. The on-board charger includes a plurality of conversion modules, each conversion module includes a plurality of elementary power conversion units that are independent of one another. Each elementary unit being characterized by a maximum usage power threshold. Each conversion module being intended to be connected to an external power supply network phase.

Abstract: Configuring a fault-sensing ring oscillator circuit is disclosed. In a particular embodiment, a fault-sensing ring oscillator circuit includes a plurality of ring oscillators; an enable circuit configured to enable and disable the plurality of ring oscillators; an OR circuit including a plurality of inputs, wherein each input is coupled to a respective ring oscillator of the plurality of ring oscillators; and a first fault detection latch including a SET input coupled to a first output of the OR circuit and a RESET input coupled to the enable circuit, wherein the first fault detection latch indicates a stuck at fault condition when the plurality of ring oscillators are disabled by the enable circuit and at least one of the plurality of ring oscillators is active.

Abstract: A crystal oscillator includes a two stage amplifier and a crystal. The two stage amplifier includes a transconductance amplifier stage electrically connected to a class AB output amplifier stage with open loop drive level control. The two stage amplifier provides a negative resistance. The crystal is electrically connected between an input of the two stage amplifier and an output of the two stage amplifier.

Abstract: A power supply controller controls operation of a power supply apparatus that generates an output voltage from an input voltage. The power supply controller includes a temperature determination circuit configured to determine to which of a plurality of temperature ranges a temperature of the power supply controller belongs, a measurement circuit configured to measure, for each of the plurality of temperature ranges, a period for which the temperature of the power supply controller belongs to the temperature range, and a nonvolatile memory configured to store a measurement result of the measurement circuit.

Abstract: In a method for operating a vehicle electrical system for a motor vehicle, a vehicle battery of the vehicle electrical system that has at least two sub-batteries provides electrical energy from more than one of the at least two sub-batteries at a conventional supply terminal of the vehicle electrical system, the conventional supply terminal being electrically coupled to the vehicle battery. At least a first and a second safety supply terminal of the vehicle electrical system are supplied with electrical energy by a coupling device of the vehicle electrical system, the coupling device being connected to the vehicle battery, and the coupling device electrically coupling the at least a first and second safety supply terminal each to exactly one of the at least two sub-batteries in accordance with a coupling state of the coupling device.

Abstract: An integrated circuit device includes a clock input terminal disposed along a first side, to which a reference clock signal is input, a first power supply voltage input terminal disposed along the first side, to which a first power supply voltage is input, a clock output terminal disposed along the second side, from which an output clock signal having a frequency different from that of the reference clock signal is output, a second power supply voltage input terminal disposed along the second side, to which a second power supply voltage is input, a first ground terminal disposed between the clock input terminal and the first power supply voltage input terminal along the first side, and a second ground terminal disposed between the clock output terminal and the second power supply voltage input terminal along the second side.

Abstract: An oscillator in which crosstalk can be reduced is provided. An oscillator includes a ground plane made of a superconductor, a conductive member spaced apart from and surrounded by the ground plane, a SQUID of which one end is connected to the conductive member and the other end is connected to the ground plane, a first connection circuit made of a superconductor, connecting parts of the ground plane located on both sides of a vicinity of a connection part between the conductive member and the SQUID to each other, and a superconducting loop circuit surrounding the SQUID and using the ground plane and the first connection circuit.