Patent application number | Description | Published |
20110102125 | PLANE COIL - A plane coil which reduces an increase of an effective resistance in a high-frequency area and is made thinner is provided. The plane coil is equipped with plural conductive wires which are parallel to each other, wherein the conductive wires are arranged in a plane and spirally wound, and coil ends of the respective conductive wires are electrically connected to each other at coil lead-out portions and thus are connected in parallel. The conductive wires are arranged in plane, so that a coil thickness does not increase, and the coil is made thinner. Moreover, the plural conductive wires are connected in parallel, an increase of an effective resistance due to an influence of a skin effect in a high-frequency area is reduced. | 05-05-2011 |
20120188806 | POWER DISTRIBUTION SYSTEM - A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution system, the DC-DC converter is controlled so as to operate only when the input voltage falls in a predetermined range. | 07-26-2012 |
20120248876 | POWER SUPPLY APPARATUS - A power supply apparatus includes a secondary battery and a timer unit for measuring a time required to charge the secondary battery from a first State Of Charge (SOC) to a second SOC, or a time required to discharge the second battery from the second SOC to the first SOC. The power supply apparatus further includes a determination unit for determining a degraded state of the secondary battery based on results of the measurement by the timer unit. | 10-04-2012 |
20120326829 | TRANSFORMER - A transformer includes: a core assembly | 12-27-2012 |
20130127261 | DC CONNECTION DEVICE - Provided is a DC connection device including a first connector connected to a DC power source side or a load side; and a second connector connected to the first connector. The first connector or the second connector has a semiconductor switch that is turned on when a portion of at least one of terminals of one of the first and second connectors is brought into contact with a terminal of the other of the first and second connectors, and is turned off before the terminal of the one of the first and second connectors is completely separated from the terminal of the other of the first and second connectors. | 05-23-2013 |
20130128624 | DC/DC CONVERTER - A DC/DC converter has DC input terminals to which a DC power is inputted, a transformer, and a bidirectional switching device on the primary side of the transformer. | 05-23-2013 |
20130140901 | DC POWER SUPPLY SYSTEM - A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged. | 06-06-2013 |
20150288296 | POWER CONVERSION DEVICE - There is provided a device including: an inverter | 10-08-2015 |