Abstract: A vacuum cleaner includes a primary dust container that includes a container body, the container body delineating a dust collecting chamber that accumulates dust sucked into the vacuum cleaner and including a waste outlet that discharges the dust accumulated in the dust collecting chamber, the primary dust container also including a waste-outlet lid that opens and closes the waste outlet. A station includes a secondary dust container that accumulates the dust discharged from the primary dust container, and a driving source that generates opening driving force and closing driving force for the waste outlet. The electric vacuum cleaner generates a driving force for opening and closing an air passage connecting a primary dust container and a secondary dust container, without impairing convenience of a vacuum cleaner.

Abstract: An autonomous traveling type vacuum cleaner capable of cleaning an area closely adjacent to an obstacle of a floor surface, and the control method therefor. A main body includes a front face part formed in a linear shape. A detector detects an obstacle in a traveling direction of the main body. A traveling part makes the front face part of the main body face the obstacle and makes the main body travel to the obstacle, on the basis of the result detected by the detector. A cleaning unit, which is disposed on a front portion of the main body, cleans a cleaning-object surface in the state where the traveling part has made the main body travel to the obstacle.

Abstract: A vacuum cleaner includes a primary dust container that includes a container body, the container body delineating a dust collecting chamber that accumulates dust sucked into the vacuum cleaner and including a waste outlet that discharges the dust accumulated in the dust collecting chamber, the primary dust container also including a waste-outlet lid that opens and closes the waste outlet. A station includes a secondary dust container that accumulates the dust discharged from the primary dust container, and a driving source that generates opening driving force and closing driving force for the waste outlet. The electric vacuum cleaner generates a driving force for opening and closing an air passage connecting a primary dust container and a secondary dust container, without impairing convenience of a vacuum cleaner.

Abstract: An electric cleaning apparatus, which comprises an autonomous cleaning unit which moves autonomously over a surface to be cleaned and collects dust, and a station unit which has a charging electrode for the autonomous cleaning unit, wherein the autonomous cleaning unit includes a first body case having a first inlet, a secondary battery which accumulates electric power supplied from the charging electrode, a first dust collecting container which accumulates dust sucked from the first inlet, and an electric blower which is driven by electric power supplied from the secondary battery and makes negative pressure act on the first dust collecting container, and wherein the station unit is provided with a second body case having a second inlet which sucks other dust different from the dust which the autonomous cleaning unit collects.

Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.

Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.