摘要:
A wind power generator is provided in which a reduction in weight is achieved by reducing the wall thickness of a nacelle, and an increase in the amount of heat input to the interior of the nacelle from sunlight is suppressed. In a wind power generator in which driving/power-generating mechanisms linked to a rotor head to which wind-turbine blades are attached are accommodated and installed inside a nacelle, a coating of high-reflectivity paint is formed on at least part of the outer wall that receives sunlight.
摘要:
Disclosed is a fuel cell comprising an electric cell in which an anode is formed on one surface of an electrolyte and a cathode is formed on the other surface of the electrolyte; a fuel gas supply section which is disposed on a side of the anode and which is formed with a fuel gas supply flow passage through which fuel gas is supplied to the anode; and an oxidation gas supply section which is disposed on a side of the cathode and which is formed with an oxidation gas supply flow passage through which oxidation gas is supplied to the cathode, wherein at least one flow passage of the fuel gas supply flow passage and the oxidation gas supply flow passage is substantially rectangular in shape.
摘要:
A photocurrent amplifier circuit which can be realized as a simple and downsized photocurrent amplifier circuit is capable of selectively amplifying, in an amplifier circuit in an output stage, one or more of current signals which are respectively obtainable from light receiving circuits. The photocurrent amplifier circuit includes: light receiving circuits; amplifier devices associated with the light receiving circuits; device selector switches which apply input voltages, which deactivate the amplifier devices, to the associated amplifier devices; and a differential amplifier circuit having an inverting input unit configured of the amplifier devices which are connected in parallel. The inputs of the amplifier devices and the output of the differential amplifier circuit are connected by gain resistors. The differential amplifier circuit amplifies, into voltage signals, current signals flowing from the light receiving circuits which are respectively associated with the gain resistors.
摘要:
It is to provide a brush-equipped motor enabled to be used for a long time without performing operations and without interruption even when the brush wears out. When a rotor is caused to perform a turning operation, cam projections similarly start to perform a turning operation. Then, an abutting part, at which each of the cam projections contacts with a spring piece part of a corresponding one of the first brushes, gradually moves to an end of the first brush. Thus, the spring piece part of each of the first brushes is gradually and elastically deformed in a direction in which brush bodies come away from a commutator. When the turning operation continues still more, an end of each of the second brushes comes off a corresponding one of the cam projections, so that the brush bodies thereof contact with the surface of the commutator.
摘要:
A metallic implant base is coated with two bioactive ceramic layers. An inner bioactive ceramic layer is coated on the implant base. An outer bioactive ceramic layer is coated on the inner bioactive ceramic layer. The inner bioactive layer is vitrified at a ratio of not less than 50 volume percent, thereby improving the bonding of the inner bioactive layer to the metallic implant base and preventing migration of the metal ions from the metallic implant base. The outer bioactive ceramic layer is vitrified to a ratio of substantially less than 50 volume percent, thereby providing a desired porosity.
摘要:
A speed changing mechanism for use with an electric rotary tool, an electric press-attaching tool, an automatic screw tightening tool or the like, includes planet gears, a planet gear support plate integrally formed with an internal gear and provided with an external gear formed outwardly of the internal gear. The planet gears are rotatably supported by a second planet gear support plate mounted on a driven shaft and formed with a second external gear. The planet gears are engaged with the interanl gear and a sun gear provided on a one-way clutch. A cylindrical member having an internal gear is slidably fitted with at least one of the first and second external gears. The speed changing mechanism can be set to have a ratio of the rapid rotation speed to the slow rotation speed of 2.5/1 or less.
摘要:
The endoscope system of the present invention includes: an endoscope that has an image pickup device that picks up an observation image of a test object; an image display unit that converts image pickup signals that have been sent from the image pickup device into images and then displays these images; a first mounting portion that is provided in an operating section of the endoscope and on which the image display unit is mounted; and a second mounting portion that is provided in the operating section of the endoscope and on which the image display unit is mounted in a different position from that of the first mounting portion.
摘要:
A differential amplifier circuit, an operational amplifier circuit, and a light-receiving amplifier circuit using the same are provided, by which the influence of an on resistance of an analog switch is reduced during the switching of gain resistances. An NPN transistor Q2 having an emitted connected in common is connected to an NPN transistor Q1 of a differential amplifier circuit including the NPN transistors Q1 and Q3, PNP transistors Q4 and Q5, and a constant-current source I1, and analog switches ASW-1c and ASW-2c are inserted and connected to the collectors of the NPN transistors Q1 and Q2 and connected to the base and collector of the PNP transistor Q4 and the base of the PNP transistor Q5. Further, analog switches ASW-1b and ASW-2b are connected to the bases of the NPN transistors Q1 and Q2, respectively.
摘要:
The present invention provides a photodetector-amplifier circuit capable of eliminating an influence of noise due to stray light entering a non-selected photodetector to stably select and switch a photodetector. The photodetector-amplifier circuit of the present invention comprises photodetectors 12 and 13. The photodetector 12 is connected via a switch 16 between an inverting input terminal of an operational amplifier 11 and GND, and is also connected via a switch 18 to a voltage source Vcc. The photodetector 13 is connected via a switch 17 to the inverting input terminal of the operational amplifier 11 and GND, and is also connected via a switch 19 to the voltage source Vcc.
摘要:
Particulate chemical substances and method of manufacturing thereof wherein the resultant particles have a narrow particle size distribution and sufficient hardness to ensure that particles can withstand intact being driven through pneumatic transportation equipment. The method comprises granulating raw material using a spray granulation apparatus having a nozzle plate equipped with nozzle pipes having a length in the range of 2-100 mm.