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.
摘要:
An amplifier circuit according to the present invention includes: a first operational amplifier having a negative input terminal, a positive input terminal, and an output terminal; a photodiode connected to the negative input terminal; a first resistor inserted between the output terminal and the negative input terminal; and a second resistor inserted between the output terminal and the positive input terminal, in which the amplifier circuit outputs current from the output terminal via the second resistor.
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:
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 11, 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:
A box-shaped shielding cover is disposed at the surface of a developing solution contained in a developing tank and the bottom wall of the cover ensures that contact between the developing solution and the air is kept to a minimum and that deterioration of the processing solution due to carbon dioxide and evaporation of the water are controlled. Moreover, the close contact between the top portion of the peripheral wall of the shielding cover and the top cover covering the top portion of the PS plate processor cuts off the flow of air over the developing tank (the air flowing from the insertion aperture to the discharge aperture). Accordingly, the airtightness of the seal in the developing section is enhanced, there is minimal deterioration of the developing solution due to carbon dioxide, and the rate of replenishment of the developing solution is reduced.
摘要:
A base station device may include, but is not limited to: a mapping unit; and at least one reception antenna. The mapping unit is configured to assign a plurality of first subcarriers to a first communication device, and assign a part of the plurality of first subcarriers to at least one other communication device. The at least one reception antenna is configured to receive from one of the first communication device and the at least one other communication device, a plurality of frequency signals allocated to the plurality of first subcarriers. Each of the plurality of frequency signals is converted from coded transmission data of the one of the first communication device and the at least one other communication device.
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:
Disclosed is an electromagnetic casting method of a silicon ingot in which a polycrystalline silicon ingot is continuously cast by charging silicon raw materials into a bottomless cold copper mold, melting the charged silicon raw materials through electromagnetic induction, pulling down to solidify the molten silicon, in which the length of a part of copper mold positioned below a lower end of an induction coil surrounding the copper mold is set to more than 40 mm and 180 mm or less. According to this method, a copper contamination of a silicon ingot incurred by a copper cold mold can be suppressed to produce a silicon ingot which is suitable as a starting material of the substrate of a solar cell.
摘要:
Provided is a wind power generator that reduces the amount of heat input into a nacelle from the outside of the nacelle due to the solar radiation, and that improves the heat dissipation performance from the inside of the nacelle to the outside air. In a wind power generator in which a driving mechanism and power generation mechanism that are connected with a rotor head, to which wind-turbine blades are attached, are accommodated and installed in a nacelle, an outer wall surface of the nacelle is provided with, on at least a part of the wall surface where no direct sunlight is radiated, a heat-dissipation-resistance reducing portion that uses a member having a higher thermal conductivity than that of a peripheral wall member.