Ricoh Company, Ltd.

Public University Corporation Yokohama City University

Yasuhiro Sugimoto

Masami Takai

Akira Nakamura

Kazuhito Kishi

Masaaki Yoshida

Keiichi Kimura

Satoshi Nakajima

Atsushi Ohshima

Satoshi Takeda

Motokazu Hasegawa

Eiko Suzuki

Hitoshi Kondoh

Toru Ushirogochi

Masataka Akaishi

Hiromichi Kuriyama

Yoshihiro Ishikawa

Masanari Umemura

Taisuke Akimoto

Tatsuya Matsuki

A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.

Power supply apparatus and magnetic field generation system

A power storage system includes a power storage element; and a voltage detecting unit configured to detect an output voltage of the power storage element. The power storage element and the voltage detecting unit are formed by integrally forming structural materials of the power storage element and the voltage detecting unit on the same base material, without any point bonding portions formed by solder mounting.

Power storage system with integrally formed voltage detecting field effect transistor and manufacturing method thereof

A sensor sheet includes unit sensor sheets configured to detect a physical property value at multiple points on a sensor layer, each unit sensor sheet including a first substrate, and an electrode layer and the sensor layer sequentially formed on one side of the first substrate; and a wiring substrate to which the unit sensor sheets are configured to be coupled, the wiring substrate including a second substrate, and a plurality of wirings provided on one side of the second substrate. One side of the wiring substrate and one side of each unit sensor sheet are facing each other. A conductive bonding member configured to electrically couple each unit sensor sheet and the wiring substrate with each other, is included between the electrode layer of each unit sensor sheet and at least one of the wirings of the wiring substrate.

Sensor sheet, robot hand, and glove

The method is disclosed of controlling a switch circuit which includes a first switching unit configured to switch between energy accumulation and energy release in a coil, and second switching units configured to connect or disconnect a plurality of corresponding storage batteries with the coil. The method comprises a first step of performing an operation to switch on the first switching unit and to switch off the second switching units; and a second step of performing an operation to switch off the first switching unit and to switch on only one of the second switching units.

Method of controlling a switch circuit, storage status adjusting circuit, storage status adjusting device and storage battery pack

An electrical equipment is supplied with electric power from one of an electric power supply system and a secondary battery. The electrical equipment includes a switch circuit and a module. The switching circuit switches a power supply source for supplying electric power to the electrical equipment between the electric power supply system and the secondary battery. The module includes a processor to execute a program to perform a controlling process including a process of controlling the switch circuit to selectively connect the electrical equipment to one of the electric power supply system and the secondary battery according to a control signal supplied from an external device.

Electric power control system

A storage status adjusting circuit includes a first switching unit configured to switch between energy accumulation in a first coil and energy release from the first coil to any one of electric storage devices in a first assembled electric storage device having a plurality of the electric storage devices, a second switching unit configured to switch between energy accumulation in a second coil and energy release from the second coil to any one of the electric storage devices in a second assembled electric storage device having a plurality of the electric storage devices, and a changing unit configured to change a potential difference between both ends of the first coil and a potential difference between both ends of the second coil based on storage statuses of the first assembled electric storage device and the second assembled electric storage device, when energy is accumulated in the first coil and the second coil.

Storage status adjusting circuit, storage status adjusting device, storage battery pack and switch circuit controlling method

A storage status adjusting circuit includes: n (n is natural number greater than 2) switching units configured to switch between energy accumulation in respective n coils and energy release from the respective n coils to any one of component electric storage devices, which are respectively included in n assembled electric storage devices respectively including a plurality of the component electric storage devices; and n changing units configured to respectively change potential differences between both ends of the n coils; wherein the changing units change, based on the storage statuses of the n assembled electric storage devices, at least any one of the potential differences between both ends of the n coils, when accumulating energy in the n coils.

Storage status adjusting circuit, storage status adjusting device, and storage battery pack

A method of controlling a switch circuit which includes n (n is a natural number greater than or equal to 3) switching units configured to respectively connect n storage batteries, which are connected in series, with n coils, wherein the n storage batteries have respective potential differences between opposite ends thereof, the method includes the step of: controlling the switching units corresponding to k (k is a natural number wherein 1&#x3c;k&#x3c;n) storage batteries, which are secondary batteries other than a secondary battery having the largest potential difference among the potential differences of the n storage batteries, to connect the k storage batteries with respective k coils.

Method of controlling switch circuit, storage status adjusting circuit, and storage battery pack

A power supply device is connected to an external power supply and supplies electric power to a load. The power supply device includes a battery terminal that is used to connect a secondary battery, a superposition unit that superposes second electric power output from the secondary battery on first electric power supplied from the external power supply, and that outputs resultant electric power to the load; a power consumption amount retrieve unit that retrieves a power consumption amount of the load; and a controller that controls an amount of the second electric power to be output from the secondary battery, based on the power consumption amount.

Power supply device and electric apparatus

A semiconductor device having a chip size package is disclosed. The chip size package comprises a semiconductor chip having at least a bonding pad, at least a terminal of said chip size package and a reroute trace formed between the bonding pad and the terminal on said chip size package. The reroute trace is formed to have a desired resistance.

Semiconductor device and voltage regulator

A semiconductor device production method of the invention includes a step of packaging a semiconductor chip with a transparent material ( ) which penetrates a laser beam ( ) within a predetermined range of wavelength having sufficient energy to cut part of an adjustable circuit ( ), and a step of trimming part of the adjustable circuit ( ) to obtain a target value of electric properties for the adjustable circuit by focusing, after the packaging step, the laser beam ( ) onto the adjustable circuit from an upper surface of the semiconductor chip through the transparent material.

Semiconductor device and manufacture thereof

A power supply voltage detecting circuit includes: a depletion MOS transistor having its source and gate connected to the base thereof; and an enhancement MOS transistor which is serially connected to the depletion MOS transistor, which has its source connected to its base, and which is fed an output of the voltage divider through its gate. Therefore, the production yield can be greatly improved, and the production costs can be greatly reduced.

Power supply voltage detecting apparatus

A hysteresis comparator circuit and a waveform generating circuit reduce a power consumption of a DC/DC converter so as to improve a power consumption efficiency when the DC/DC converter is operated with a relatively small load. The hysteresis comparator circuit is connected to a reference voltage source providing a reference voltage. A hysteresis comparator compares an input voltage with one of a first threshold voltage and a second threshold voltage. A hysteresis voltage generating circuit selectively generates one of the first and second threshold voltages by controlling a state of electric charge stored in each of the capacitors. An electric charge stored in the capacitors is provided from the reference voltage source.

Growing community of inventors

Tokyo, Japan

Masami Takai