摘要:
In a sensor control circuit, an impedance signal output unit has a HPF, a P/H circuit, a LPF, etc., and detects an element impedance of a sensor element on the basis of an impedance response signal which is alternately changed in response to an alternating current signal supplied to the sensor element. The P/H circuit has an input comparator which inputs an impedance detection voltage Vz after the HPF, a rectifying element connected to the P/H circuit, and a hold capacitor which is charged by the output of the input comparator. The input comparator has a constant current circuit and a transistor. The constant current circuit limits an updating value of a hold voltage value Vph of the hold capacitor every alternating current period. The sensor control device detects the element impedance of the sensor element with high accuracy while preventing influence of noise.
摘要:
In at least one of flow distribution areas 35 provided on a separator 15, plurality of first projections 46 formed in a region corresponding to a first section (parted regions 32a and 32c) of a center area (including parted regions 32a through 32c) having a relatively high flow rate of a first fluid (refrigerant) are designed to have a larger diameter of a cross section than plurality of first projections 46 formed in a region corresponding to a second section (parted region 32b) of the center area having a relatively low flow rate of the first fluid. This arrangement effectively attains a substantially uniform flow rate distribution of a fluid in a fluid flow path formed on a separator, which is configured to have concavo-convex structures formed in a mutually reversed relation on two opposed sides thereof.
摘要:
The present invention is a method of manufacturing a transfer mask with use of a mask blank in which a thin film for pattern formation and a chromium-based thin film made of a material containing chromium are stacked on a transparent substrate in this order. The thin film for pattern formation is made of material containing silicon and a transition metal other than chromium. The chromium-based thin film is made of a material containing chromium. Exposure light having a wavelength of 200 nm or less is applied to the transfer mask. In the manufacturing method, the transfer mask is produced by performing, in the following order, a process of forming a resist film having a transfer pattern on the chromium-based thin film, a process of forming a transfer pattern in the chromium-based thin film with use of a mask of the resist film having the transfer pattern, a process of forming a transfer pattern in the thin film for pattern formation with use of a mask of the chromium-based thin film having the transfer pattern, and a process of removing the chromium-based thin film by etching. The manufacturing method further includes a cleaning process of at least one of alkali solution cleaning, hot water cleaning, and ozone-containing water cleaning on the produced transfer mask until a width of the transfer pattern of the thin film for pattern formation is reduced by 4 nm or a space width of the thin film for pattern formation is increased by 4 nm.
摘要:
A gas concentration measuring apparatus for use in air-fuel ratio control of automotive engines is designed to determine the concentration of oxygen within a wide and a narrow range using a sensor current flowing through a sensor element. The apparatus includes an amplifier circuit equipped with an operational amplifier and a plurality of amplifying resistors and a switch. The switch is responsive to a request signal to switch a relation in electrical connection between an operational amplifier and the amplifying resistors to distribute the amplifying resistors into an input resistor and a feedback resistor for the operational amplifier to change an amplification factor of the amplifier circuit. This results in a change in resolution of measurement of the concentration of oxygen, thereby ensuring enhanced accuracy in determining the concentration of oxygen in a selected one of the narrow and wide ranges.
摘要:
A pulse signal generating device includes: the plurality of encoders each of which outputs an encoder signal with a pulse period corresponding to the speed of an object to be detected; delay amount control unit that controls a relative delay amount with respect to a pulse signal for each of the plurality of pulse output signals output from the plurality of encoders; a detection unit that individually detects abnormalities in pulses of the plurality of encoder signals; a switching unit that performs switching to one pulse output signal, in which pulse abnormalities are not detected, of the plurality of pulse output signals; and a pulse generating unit that generates a pulse signal by delaying the one pulse output signal switched by the switching unit by the corresponding relative delay amount.
摘要:
A fast reactor including a reactivity control assembly including a reactor shutdown rod and neutron absorbers, a reactor shutdown rod drive mechanism, and units of neutron absorber drive mechanism. The reactor shutdown rod drive mechanism causes an inner extension tube to fall and release the reactor shutdown rod by a gripper section by turning off the power supply to a holding magnet at the time of scram. When grasping the neutron absorbers, an outer extension shaft is pulled up to allow both of the extension shafts to be inserted. After the outer extension tube gets to a handling head section of the neutron absorber, the outer extension shaft is pushed down to grasp the neutron absorber externally by latch fingers of the gripper section so that the neutron absorber can be moved up and down.
摘要:
A sputtering target for manufacturing a mask blank having a backing plate 5 where a portion for bonding a target member 4 is protruded like the convex with respect to a base portion 5′, and the target member 4 being formed to have a larger surface area than the area of the bonding portion of the backing plate 5 with extending from the bonding portion over a whole periphery with a bonding agent 30 interposed in-between, and further a metal 40 is deposited to a concave portion formed by a combination of the two structures in such a manner that the elution of the bonding agent 30 can be sealed.
摘要:
A belt transport device includes: a drive roller which is driven by a power source; a driven roller which is held in a rotatable manner; an endless belt which is wound on the drive roller and the driven roller; a band-like detecting section which is arranged on the endless belt in a circumferential direction of the endless belt; a sensor which detects the band-like detecting section; a displacement unit which displaces a relative positional relationship between the band-like detecting section and the sensor in a width direction of the endless belt.
摘要:
A separator has a concavo-convex structure formed in mutually reversed shapes on two opposite sides thereof to define flow paths of different fluids on the respective two sides. The concavo-convex structure includes multiple first projections formed and protruded on one side of the two opposite sides and arranged at intervals having a preset regularity. The concavo-convex structure also includes multiple second projections formed and protruded on the other side of the two opposite sides in a specific area corresponding to an area for formation of the multiple first projections on the one side and arranged at intervals having a preset regularity. The concavo-convex structure further includes reinforcing elements protruded on the one side. Each of the reinforcing elements is formed as a convex in a specific shape of connecting multiple positions where the first projections are expected to be formed according to the preset regularity, while avoiding positions corresponding to the second projections formed on the other side. This arrangement effectively prevents a potential trouble caused by deformation of the separator due to a pressure difference between the flow pressures of the respective fluids flowing on the respective sides of the separator.
摘要:
A fuel cell (10) includes a lamination (11) of a plurality of unit cells (30), current collector plates (12, 12) arranged at both ends of the lamination (11), end plates 16, 16 respectively provided outside the current collector plates (12, 12) with 5 insulating plates (14, 14) interposed therebetween, and fastening members (18) for fastening the end plates (16, 16) in the laminating direction to apply desired pressing force to the lamination (11). A barcode (41) corresponding to particular information relating to a unit cell (30) is provided on the exposed side surface of a separator (38) of the unit cell (30). According to this fuel cell (10), the barcode 41 can be easily read requiring no disassembly of the fuel cell (10). Moreover, as the information relating to the fuel cell can be obtained from the barcode (41), the information that cannot be determined from outer appearance can be obtained, resulting in improved service operations.