| Patent application number | Description | Published |
|---|
| 20080204105 | Power supply device, signal output apparatus and power supply method - A power supply device capable of suitably reducing a loss even in a case where power is supplied to an output device which outputs a high-frequency signal, a signal output apparatus in which a loss is suitably reduced, and a power supply method capable of suitably reducing a loss. The power supply device has a power supply section which supplies a power supply voltage to an output device which is supplied with the power supply voltage and outputs an output signal, and a voltage control section which controls the power supply section so that the power supply voltage follows the envelope of the output signal from the output device. | 08-28-2008 |
| 20090129128 | Uninterruptible power supply apparatus - An uninterruptible power supply device connects a battery for power-outage backup to the output side of an AC/DC converter. An input monitoring circuit monitors alternating current input of the AC/DC converter and outputs an alternating current input monitor signal E | 05-21-2009 |
| 20090295355 | Voltage converting device and voltage converting method - A changing-speed calculator monitors a current value of an output current flowing through a load circuit to calculate a change speed of the current value. A correction-amount obtaining unit reads from a correction-amount table a correction amount of a duty ratio corresponding to the change speed of the output current. A reference-voltage comparator compares a voltage value of an output voltage to be applied to the load circuit and a predetermined reference voltage with each other, and then notifies a duty-ratio determining unit of the comparison result. The duty-ratio determining unit performs feedback control according to the comparison result of the voltage values to correct the duty ratio. After correcting the duty ratio, the duty-ratio determining unit further corrects the duty ratio by the correction amount obtained by the correction-amount obtaining unit. | 12-03-2009 |
| 20100052801 | TEMPERATURE CONTROL DEVICE - A thermostatic-chamber temperature control device includes: a heating element for heating a thermostatic chamber; a bridge circuit having a temperature sensitive element whose resistance value varies in accordance with the temperature of the heating element; a detection circuit for detecting an unbalanced voltage of the bridge circuit; a PWM signal generating circuit for generating a PWM signal corresponding to the unbalanced voltage detected by the detection circuit; and a switching element that has a current output terminal connected to the heating element and a current input terminal connected to a power supply circuit and is driven on the basis of the PWM signal generated by the PWM signal generating circuit. | 03-04-2010 |
| 20100171477 | Power supply device and electronic apparatus - A power supply device includes a first supply section that supplies power according to an extent of a collective load of processing in a processing apparatus for the whole of the processing apparatus which processes data, and further includes a second supply section that supplies, at a place on a supply path through which power is supplied from the first supply section to the processing apparatus, power according to an extent of a load of processing in local in a portion of the processing apparatus to the portion, and supplies power smaller than supplying power of the first supply section. | 07-08-2010 |
| 20100176779 | Power supply device and electronic apparatus - A power supply device includes: a power supply plane to which a processing circuit is electrically connected to supply electrical power to the processing circuit and in which the processing circuits are connected to each supply place; plural OBP's each of which applies a voltage to the power supply plane to supply electrical power to the processing circuits via the power supply plane; and a power supply control section which controls an application voltage in individual one of the OBP's by reflecting a status of power supplying in other OBP's other than the individual one out of the plural OBP's to uniform a dispersion of voltages between the supply places. | 07-15-2010 |
| 20100176780 | Power supply device and electronic apparatus - A power supply device includes: a power supply connector which receives supply of power and supplies the power to the outside thereof; plural OBPs which apply voltages to supply power, to each of processing devices to perform processing and to include different types of application voltages planned to be applied, and each of the plural OBPs is supplied with power directly or indirectly from the power supply connector; and a power supply control section that increases and decreases supplying power which each of the OBPs supplies to one processing device out of the plural processing devices according to an extent of a processing load in the one processing device as well as according to an extent of a processing load in another processing device whose application voltage is different from that of the one processing device. | 07-15-2010 |
| 20100176781 | Power supply device and electronic apparatus - A power supply device includes: a first supply section that supplies power in accordance with an extent of a load in processing in a processing device by applying a voltage to the processing device which processes data; and a second supply section that supplies, to the processing device, power smaller than the supplying power by the first supply section, in accordance with an extent of a load in processing in the processing device to increase and decrease a voltage with respect to the application voltage by the first supply section. | 07-15-2010 |
| 20110136450 | POWER CIRCUIT AND RADIO COMMUNICATION CIRCUIT USING SAME AND METHOD OF OPERATING A CIRCUIT - A power circuit and method thereof are provided. The power circuit includes an output circuit having an alternating current-coupling element and that supplies an output signal of the output circuit to an amplifier as a driving voltage. The power circuit includes an envelope signal-extracting unit extracting an envelope signal from a carrier wave, a simulation signal-waveform generating unit generating a simulation signal including a fluctuation component occurring when the envelope signal is transmitted to the output circuit, a fluctuation component-extracting unit extracting the fluctuation component included in the simulation signal, and an inverted component-generating unit generating an inverted component obtained by performing phase inversion for the fluctuation component, where the fluctuation component occurring in the output circuit is canceled out through the inverted component. | 06-09-2011 |
