Abstract: A power supply unit for use with thermostats or other like devices requiring power. A power supply unit may be designed to keep electromagnetic interference emissions at a minimum, particularly at a level that does not violate governmental regulations. A unit may be designed so that there is enough power for a triggering a switch at about a cross over point of a waveform of input power to the unit. Power for triggering may come from a storage source rather than line power to reduce emissions on the power line. Power for the storage source may be provided with power stealing. Power stealing may require switching transistors which can generate emissions. Gate signals to the transistors may be especially shaped to keep emissions from transistor switching at a minimum.

Abstract: An active electrode and a passive electrode are electrically field-coupled with an active electrode and a passive electrode provided in a power transmission device, respectively. Power in a high frequency voltage excited on the active electrode and the passive electrode is supplied to a mobile unit via a step-down transformer, a rectification smoothing circuit, and a DC-DC converter. A CPU turns off switches when wireless communication is carried out. The passive electrode functions as a booster antenna that is magnetically field-coupled with an antenna coil. A high frequency signal outputted from an RF circuit is transmitted via the antenna coil and the passive electrode, and a high frequency signal transmitted from the power transmission circuit is inputted, via the passive electrode and the antenna coil, to the RF circuit.

Abstract: Embodiments include a portable rechargeable battery pack, system, and external adapter that allow the portable rechargeable battery pack to both power a host device though a set of host contacts and provide power through a set of charging contacts. The portable rechargeable battery pack includes a charge protection circuit that prevents an excessive discharge current through the charging contacts and allows high charge current when charging the portable rechargeable battery pack. A discharge circuit allows a low level discharge current through the charging contacts to provide power to other devices.

Abstract: A circuit includes an evaluation node through which current flows from a voltage source node to a sensed switch when the sensed switch is closed. First and second control switches are disposed between the voltage source node and the evaluation node to switch between first and second current paths for the current. The current passes through the first control switch when flowing along the first current path. The second control switch is coupled to a control terminal of the first control switch to deactivate the first control switch and allow the current to flow through the second current path. Multiple passive circuit elements are configured to establish first and second current levels for the current. The passive circuit elements are disposed between the voltage source node and the evaluation node in a circuit arrangement in which no current path to ground is present when the sensed switch is open.

Abstract: A radio unit for a plant of process automation technology. The radio unit has a power circuit, which serves to derive first and second supply voltages from a voltage source, wherein the power circuit has a first output, via which the first supply voltage is tappable to serve for driving an operating electronics of the radio unit, wherein the power circuit has at least a second output, via which the at least a second supply voltage is tappable to serve for driving at least one field device connectable to the second output.

Abstract: An apparatus includes a first input/output (I/O) interface circuit having a maximum voltage rating. The first I/O interface circuit includes a level shifter and an output stage. A reference voltage bias generator is coupled to the first I/O interface circuit, to a first supply voltage, and to a first ground potential. The reference voltage bias generator is configured to generate a plurality of reference bias signals, including a first reference voltage and a second reference voltage. When the first supply voltage is not greater than the maximum voltage rating, the first reference voltage is equal to the first supply voltage and the second reference voltage is equal to the first ground potential. When the first supply voltage is greater than the maximum voltage rating, the first reference voltage is equal to the first supply voltage times a first fraction, and the second reference voltage is equal to the first supply voltage times a second fraction.

Abstract: The invention relates to a wireless power connector and a wireless power connector system including at least one wireless power connector for contactlessly receiving electric power from a second connector and for contactlessly supplying electric power to a third connector. In order to enable the wireless power connector to inductively forward electric power received from the second connector, the invention suggests providing a first and a second mating end respectively connectable to the second and the third connector and a magnetic core extending between the first and the second mating end. A coil is wound around the magnetic core and configured to output, as an alternating current, at least parts of the electric power received from the second connector. The magnetic core interconnects the first and the second mating end such that, in a connected state, the magnetic core inductively forwards electric power to the third connector.

Abstract: A vehicle auxiliary power supply that is mounted on a railway vehicle, includes a three-phase inverter circuit that converts DC power or AC power input from an overhead line to desired AC power to supply the AC power to a load, and is connected in parallel with a VVVF inverter device that drives a propulsion motor, wherein a blocking diode that prevents backflow from a side of the three-phase inverter circuit to a side of the overhead line is provided between the overhead line and the three-phase inverter circuit, and a SiC Schottky barrier diode is applied to the blocking diode.

Abstract: In a contactless power supply mechanism, a power receiving unit for supplying power to an electric device includes a secondary coil and a power supplying unit for supplying power to the power receiving unit includes a primary coil. The primary coil includes a primary core formed of magnetic material and a length of winding wire wounded around the primary core. The secondary coil includes a bar-shaped secondary core formed of magnetic material, a length of winding wire wounded around the secondary core and a magnetic sheet attached to at least one of end faces of the secondary core. The magnetic sheet includes a close-contact portion placed in close-contact with the end face of the secondary core and a curved portion which extends outwards from the close-contact portion beyond an outer edge of the end face and whose normal line has a portion un-parallel with an axial direction of the secondary core.

Abstract: A PV junction unit for joining a plurality of PV strings into a single string, comprising: a plurality of anode branch circuits; an anode busbar adapted to connect with an anode output end of each PV string via one corresponding anode branch circuit; a plurality of cathode branch circuits; a cathode busbar adapted to connect with a cathode output end of each PV string via one corresponding cathode branch circuit; resistors each of which is connected in series in one corresponding anode branch circuit connecting the anode output end of one corresponding PV string with the anode busbar, wherein each resistor has a theoretical resistance; voltage measuring devices each of which is connected in parallel with one corresponding resistor; and a processor connected with each of the voltage measuring devices, the processor configured to determine a current value in one PV string at least based on the theoretical resistance of the resistor in one anode branch circuit connected with the one PV string and based on a volt

Abstract: A method for designing a system of electrical wirings for a complex system, in particular applicable to the design of electrical wirings of an aircraft, is provided. The electrical wirings allow the flow of digital, analog or discrete data between the components of the complex system and/or the transmission of electricity to components of the complex system, the components of the complex system being grouped together in subsystems, each able to perform a predetermined function, and able to be broken down into subsystems each capable of performing a predetermined sub-function. The wirings are distributed into functional groups such that all of the wirings allowing the flow of one or more data and/or the transmission of electricity, directly or indirectly necessary for the operation of the components of a subsystem, for performing the corresponding function or sub-function are distributed in a single and same functional group.

Abstract: A battery safety device for a vehicle and a method of detecting failure thereof is installed between a high-voltage battery mounted on the vehicle and a power line. The device includes a first main relay connected to a positive terminal of the battery in series, and a second main relay connected to a negative terminal of the battery in series. A capacitor is connected in parallel to the first main relay and connected to the positive terminal of the battery.

Abstract: A modular solar panel system facilitated to maximize the power generation from a solar module, configured to maximize power generation from a plurality of solar cells under conditions of partial shade or light obstruction. The modular solar panel system includes a crisscross network configuration of solar cell arrays, wherein the solar cells are often subjected to at least partial shading and wherein the present invention provides innovative configurations to minimize the damage inflicted by the shadows.

Abstract: Approaches are described for managing effects such as interference, crosstalk, and other types of noise in an electronic environment using a physical and/or electronic switch to improve electrode performance of a measurement system. Such approaches enable a component, such as a sensing electrode or other proximity sensing component of a measurement system of a computing device (e.g., a mobile phone, tablet computer, etc.) or other electronic device to be collocated, or otherwise placed in proximity, with one or more potential noise producing components, such as a ground plane, which can interfere or otherwise degrade the performance (i.e., electrode efficiency and/or electrode sensitivity) of the sensing electrode of the measurement system.

Abstract: Aspects of a protection circuit and method are disclosed. An apparatus to transmit wireless power comprises a transmit antenna, a driver, a sensing circuit, and a control circuit. The transmit antenna generates a wireless field to charge devices. The driver powers the transmit antenna for generation of the wireless field. A power level of the wireless field is based on a power level of the driver. The sensing circuit senses wireless power received at the transmit antenna and generates a monitoring signal based on the sensed wireless power received at the transmit antenna. The control circuit controls the power level or inhibits the driver from powering the transmit antenna when the monitoring signal indicates that the transmit antenna is receiving wireless power from a foreign antenna.

Abstract: A powerline communication (PLC) device can be configured to execute functionality for zero cross sampling and detection. When the PLC device is directly coupled to a high-voltage PLC network, the PLC device can comprise printed safety capacitors in series with a high-voltage input AC powerline signal to safely couple the high-voltage AC powerline signal to the low-voltage processing circuit. The PLC device can also comprise an ADC to sample a scaled AC powerline signal and to obtain zero cross information. When the PLC device is part of an embedded PLC application, dynamic loading can affect the integrity of a low voltage zero cross signal that is used to extract zero cross information. After digitizing the zero cross signal, the PLC device can execute functionality to minimize/eliminate voltage drops caused by dynamic loading and obtain the zero cross information.

Abstract: An electrically operable motor vehicle door lock (1) has a locking mechanism including at least one locking element (2) and/or actuating element, a motor (3) which acts on the locking element (2) and/or actuating element, and an emergency energy source (12) for emergency operation of the motor (3) in the event of failure of a main energy source (6). A switching element (8, 9) actuated by the main energy source (6) is provided. The switching element (8, 9) connects the emergency energy source (12) to the motor (3) electrically in the event of failure of the main energy source (6) to and provide for the emergency operation.

Abstract: An electronic circuit that accepts a variable DC voltage power source and converts it to a constant DC power source, the energy of which is either stored in a battery bank or sent out to DC loads or AC loads via a DC/AC conversion subsystem. The device capable of using solar, wind, geothermal, or hydroelectric energy sources.

Abstract: Disclosed is a resonance type power transmission device that transmits electric power by using a resonator for transmission 3 and a resonator for reception 4 whose resonance conditions are matched to each other, the resonance type power transmission device including a transmission power supply 1 to supply electric power, a transmission antenna 2 to transmit the electric power from the transmission power supply 1, a conductive substance 7 to establish an electrical single point connection between the resonator for transmission 3 and the resonator for reception 4, a reception antenna 5 to receive the electric power from the transmission antenna 2 via the resonator for transmission 3 and the resonator for reception 4, and a reception power supply 6 to receive the electric power received by the reception antenna 5.

Abstract: A power generating system comprising: a plurality of power generating units coupled in parallel; a power collecting device for collecting electric power output from the plurality of power generating units; and wirings for coupling the plurality of power generating units and the power collecting device. A ratio of a conductor diameter to a predetermined length of each of the wirings is defined as a reference ratio. A value obtained by multiplying the reference ratio, a number of the wirings, and a loss generated by a specific wiring together is subtracted from a value obtained by multiplying a predetermined number of wirings for adjustment by a ratio of a conductor diameter to a length of the specific wiring. A total of the ratios of the conductor diameters to the lengths of the predetermined number of the wirings for adjustment is determined as a value less than the subtracted value.