摘要:
An LED drive circuit for driving an LED includes a reactor L1, a switch element, a current detection resistor R1 to detect a current of the switch element, a constant current circuit 2 that generates a first control signal to control a current of the switch element to be constant, a disconnection detection circuit 4a that generates a second control signal to keep the switch element OFF if determining that a current equal to or over a predetermined value passes through the switch element when a predetermined time elapses after the timing at which the switch element changes its state from ON to OFF, and a driver of the switch element that drives the switch element and keeps the switch element OFF in case of a disconnection according to the second control signal in priority to the first control signal.
摘要:
An annular elastic gasket adapted to be disposed between an insertion hole formed in a housing and a cylindrical body which is inserted into the housing via the insertion hole in such a manner that the annular elastic gasket elastically contacts an inner surface of the insertion hole and an outer circumferential surface of the cylindrical body. The annular elastic gasket comprises a hollow cylindrical gasket base body comprised of a molded body made of an elastic material, to be compressedly fitted and retained in the insertion hole, an annular seal lip portion extending in the centripetal direction from the gasket base body and an elastic extending portion which constitutes an extending base portion at an end of a tip side portion of the annular seal lip portion, being bent in such a manner that the end directs in the centripetal direction. The elastic extending portion elastically expands in the diametrical direction together with the tip side portion when the cylindrical body is inserted into the insertion hole, thereby the elastic extending portion elastically contacts the outer circumferential surface of the cylindrical body while maintaining elastic restoring force in the contracting direction.
摘要:
The present invention provides a titanium material for hot rolling which enables reduction of defects on the surface (in the case of a flat material or strip coil, including not only the flat surfaces but also the side surfaces and edges) due to hot rolling. The titanium material for hot rolling has dimples imparted by cold plastic deformation whose mean value of the heights (Wc) of the undulation profile elements is 0.2 to 1.5 mm and mean value of the lengths (WSm) thereof is 3 to 15 mm. The invention also provides a method of producing the titanium material and a method of hot rolling the titanium material.
摘要:
A titanium slab for hot rolling comprised of a titanium slab obtain by smelting commercially pure titanium, wherein even if the breakdown process is omitted, the strip shaped coil after hot rolling is excellent in surface properties and a method of smelting that titanium slab are provided. The titanium slab according to the present invention is a titanium slab for hot rolling obtained by smelting commercially pure titanium including the β phase stabilizing element Fe, wherein the formation of coarse β phases is suppressed by making the average Fe concentration down to 10 mm from the surface layer of the surface which corresponds to at least the rolling surface of the titanium slab 0.01 mass % or less. A titanium slab obtained by smelting commercially pure titanium can be obtained by cooling until the surface becomes the β transformation point or less, then reheating it to the β transformation point or more, and gradually cooling from the slab surface layer.
摘要:
The present invention provides a method for removing moisture from fluorine-containing compounds, the method comprising bringing a fluorine-containing compound contaminated with moisture into contact with an aqueous solution containing a metal salt. The method of the present invention can continuously and efficiently remove moisture from various fluorine-containing compounds, such as hydrofluoroolefins. In addition, the method produces less waste, etc., and is an industrially advantageous moisture removal method.
摘要:
According to one embodiment, a liquid crystal display device includes a first substrate including a first storage capacitance line and a second storage capacitance line, a gate line located between the first storage capacitance line and the second storage capacitance line, a semiconductor layer located at a substantially central part of a pixel, a source line put in contact with the semiconductor layer, a drain electrode which is put in contact with the semiconductor layer and extends above the first storage capacitance line and the second storage capacitance line, and a pixel electrode including a first main pixel electrode opposed to the first storage capacitance line, and a second main pixel electrode opposed to the second storage capacitance line.
摘要:
According to one embodiment, a device includes a first substrate including first and second gate lines which extend in a first direction, a source line which extends in a second direction, and a pixel electrode including a primary pixel electrode which is located between the first and second gate lines and which extends in the second direction, a second substrate including a common electrode which extends parallel to the primary pixel electrode on both sides across the primary pixel electrode, and a liquid crystal layer held between the first and second substrates. At a position that intersects with the source line, at least one of the first gate line and the second gate line includes a depression provided in an end located on the side of the pixel electrode.
摘要:
According to one embodiment, a device includes a first substrate including a pixel electrode including a contact portion, main pixel electrodes extending from the contact portion in a second direction, and a connection portion which electrically connects the main pixel electrodes, and a switching element including a drain electrode disposed at a middle position in the first direction of the pixel electrode and formed integral with the pixel electrode, a second substrate including main common electrodes extending substantially in parallel to the main pixel electrodes, on both sides of the main pixel electrodes, and sub-common electrodes which extend between the main common electrodes and are located between the pixel electrodes arranged in the second direction, and a liquid crystal layer.
摘要:
The present invention provides a method for producing a fluorine-containing alkane, which comprises reacting at least one fluorine-containing compound selected from the group consisting of chlorine-containing fluoroalkanes and fluorine-containing alkenes with hydrogen gas in the presence of catalysts, wherein two or more catalysts having different catalytic activities are used, and the fluorine-containing compound and hydrogen gas, which are starting materials, are sequentially brought into contact with the catalysts in the order of the catalyst having a lower catalytic activity followed by the catalyst having a higher catalytic activity. According to the present invention, in the method for producing a fluorine-containing alkane by using chlorine-containing fluoroalkane or fluorine-containing alkene as a starting material, and subjection it to a reduction reaction or a hydrogen addition reaction, the objective fluorine-containing alkane can be produced with high productivity.
摘要:
A weather strip includes an extrusion molded extrusion molded portion, an injection molded portion which connects both ends of the extrusion molded portions in a straight line shape, a trim portion which is mounted on a circumferential edge of an opening of a luggage compartment, and a hollow sealing portion which protrudes from the trim portion. The injection molded portion is formed such that a width thereof is 2.0. The hollow sealing portion is provided with a core withdrawing hole, through which a core mold forming an inner peripheral surface of the hollow sealing portion is withdrawn after formation. The core withdrawing hole is formed such that a length thereof along a circumferential direction of the inner peripheral surface of the hollow sealing portion is 40% of a circumferential length of the inner peripheral surface.