摘要:
Disclosed is a DC-DC power conversion apparatus (10) including two or more switching units (SU1, SU2) each of which further includes two semiconductor switching elements (Sa, Sb), and wherein each of the semiconductor switching elements (S1a, S1b, S2a, S2b) of each of the switching units are all connected in series, and which also includes an energy transition capacitor (C1) for conducting charging/discharging, and an inductor (L). The DC-DC power conversion apparatus (10) is also provided with a control unit that makes the semiconductor elements execute operations in four types of switching modes, according to the ratio (V2/V0) of the input/output voltages of the power conversion apparatus and the direction of the power transmission, and that also makes the elements carry out a current-discontinuing operation wherein the inductor current will become zero during switching operation, upon low load.
摘要:
An antidazzle apparatus for movable bodies is capable of not hiding something a user wants to see while dimming sunlight. A transmissive display is disposed above ahead of a driver, and two dimmer portions are formed in the transmissive display. The dimmer portions are positioned on straight lines linking the driver's right and left eyes with the sun, respectively, and are set to sizes a bit larger than the sizes of the pupils. In this case, sunlight is dimmed by the dimmer portions. Nevertheless, lines of sight leading to an entity which is located much closer than the sun is and which the driver wants to see are not intercepted by the dimmer portions. This allows the driver to see the entity.
摘要:
For a voice guidance phrase, multiple voice data items having individually different voice ranges or frequencies are previously stored in a memory. A voice mixing unit chooses to mix three voice data items among the stored voice data items and thereby produces a mixed voice data item. A voice outputting unit converts the mixed voice data item into a voice and then vocalizes a voice guidance phrase via a speaker. A voice measuring unit measures a characteristic of a frequency, a volume, or a pronunciation speed with respect to a response voice responding to the outputted voice guidance phrase. A voice mixing unit produces a mixed voice data item having a characteristic similar to the measured characteristic and outputs it.
摘要:
A map of an entire region is divided into sections of a square of 900", each of which is further divided into blocks of a square of 30", each of which is further divided into units of a square of 1", so that a region on the map can be hierarchically designated. Each section is defined with section codes of three figures; each block is defined with block codes of three figures in accordance with its relative positional relation in the section; and each unit is defined with unit codes of three figures in accordance with its relative positional relation in the block, so that each unit can be completely differentiated with an intrinsic code of nine figures composed of those three kinds of codes. As to the section code composing the intrinsic code corresponding to the predetermined region, moreover, a number of significant digits is reduced by assigning a lower number in the code system, so that the manual operations of inputting the intrinsic code of the predetermined region can be lightened.
摘要:
A fluid pump comprises a casing at the rear of which is secured a fixed plate having a forward open longitudinal groove with a C-shaped transversal cross-section. A movable plate is placed at the front of the fixed plate and is held in a close sliding contact with the fixed plate to seal the groove to form a pumping chamber. The movable plate carries an integral pumping member which is in the form of a split-tube extending into the pumping chamber. The movable plate is driven by an eccentric drive so that the pumping member within the pumping chamber performs as oscillatory movement along a circular trajectory with its inner wall in a sealing contact with the inner wall of the pumping chamber, and with its outer wall in a sealing contact with the outer wall of the pumping chamber, thereby performing the intake and compression strokes. The pumping member and the pumping chamber are so shaped that the tangential lines drawn at their edges become parallel with each other, thereby assuring a close sealing contact at the TDC and BDC positions of the pumping member.
摘要:
Disclosed is a DC-DC power conversion apparatus (10) including two or more switching units (SU1, SU2) each of which further includes two semiconductor switching elements (Sa, Sb), and wherein each of the semiconductor switching elements (S1a, S1b, S2a, S2b) of each of the switching units are all connected in series, and which also includes an energy transition capacitor (C1) for conducting charging/discharging, and an inductor (L). The DC-DC power conversion apparatus (10) is also provided with a control unit that makes the semiconductor elements execute operations in four types of switching modes, according to the ratio (V2/V0) of the input/output voltages of the power conversion apparatus and the direction of the power transmission, and that also makes the elements carry out a current-discontinuing operation wherein the inductor current will become zero during switching operation, upon low load.
摘要:
A power semiconductor circuit device and a method for manufacturing the same, both of which are provided with: a base board on which at least a power semiconductor element is mounted; a resin which molds the base board and the power semiconductor element in a state where partial surfaces of the base board, including a base board surface opposite to a surface on which the power semiconductor element is mounted, are exposed; and a heat dissipating fin joined to the base board by a pressing force. A groove is formed in the base board at a portion to be joined to the heat dissipating fin, and the heat dissipating fin is joined by caulking to the groove.
摘要:
A power semiconductor circuit device and a method for manufacturing the same, both of which are provided with: a base board on which at least a power semiconductor element is mounted; a resin which molds the base board and the power semiconductor element in a state where partial surfaces of the base board, including a base board surface opposite to a surface on which the power semiconductor element is mounted, are exposed; and a heat dissipating fin joined to the base board by a pressing force. A groove is formed in the base board at a portion to be joined to the heat dissipating fin, and the heat dissipating fin is joined by caulking to the groove.
摘要:
A map of an entire region is divided into sections of a square of 900", each of which is further divided into blocks of a square of 30", each of which is further divided into units of a square of 1", so that a region on the map can be hierarchically designated. Each section is defined with section codes of three figures; each block is defined with block codes of three figures in accordance with its relative positional relation in the section; and each unit is defined with unit codes of three figures in accordance with its relative positional relation in the block, so that each unit can be completely differentiated with an intrinsic code of nine figures composed of those three kinds of codes. As to the section code composing the intrinsic code corresponding to the predetermined region, moreover, a number of significant digits is reduced by assigning a lower number in the code system, so that the manual operations of inputting the intrinsic code of the predetermined region can be lightened.
摘要:
A scroll-type pump suitably used as a compressor in an automobile air-conditioning system. The pump is provided with a stationary scroll member and a movable scroll member, which movable scroll member rotates while maintaining contact with the stationary scroll member. A scroll shape of each of the scroll members is formed by a plurality of alternately arranged arc sections of a small radius of curvature and arc sections of a large radius of curvature smoothly connected to each other. A pump having an overall shape which corresponds to the shape of the space in which the pump is to be arranged in the vehicle is obtained.