摘要:
In an AT-cut quartz resonator having excitation electrodes formed on two principal surfaces of an AT-cut quartz substrate, the two electrodes are displaced a predetermined amount apart in a direction orthogonal to the X-axis direction so that a frequency deviation in a temperature range of from −10° C. to 50° C. is less than ±2.5 ppm. Further, in an AT-cut quartz resonator in which vertically opposed electrodes on both principal surfaces of a quartz substrate are slightly displaced apart in opposite directions along the Z′ axis of quartz crystal, a balancing load is formed on a piezoelectric substrate on the side opposite to the direction of displacement of the electrodes. Thus, the present invention dispenses with the need for raising the ratio of conforming to nonconforming quartz substrates by eliminating variations in their cutting angle, but makes it possible to use nonconforming quartz substrates to offer customers low-cost quartz resonators of oscillation frequencies following various specs, by making easy, simple structural modifications of slightly changing the electrode arrangement or structure, or by making simple improvements to the conventional quartz resonator manufacturing process. In the manufacture of oscillators for use in consumer-electronics equipment, it is possible to fulfill any particulars specs without inserting a temperature compensating circuit in the oscillation circuit. In regards to industrial equipment, any adjustments need not be made to the temperature compensating circuit in the oscillation circuit, and this improves the productivity of various communications equipment and various electronics equipment and reduces their manufacturing costs.
摘要:
In an AT-cut quartz resonator having excitation electrodes formed on two principal surfaces of an AT-cut quartz substrate, the two electrodes are displaced a predetermined amount apart in a direction orthogonal to the X-axis direction so that a frequency deviation in a temperature range of from -10.degree. C. to 50.degree. C. is less than .+-.2.5 ppm. Further, in an AT-cut quartz resonator in which vertically opposed electrodes on both principal surfaces of a quartz substrate are slightly displaced apart in opposite directions along the Z' axis of quartz crystal, a balancing load is formed on a piezoelectric substrate on the side opposite to the direction of displacement of the electrodes. Thus, the present invention dispenses with the need for raising the ratio of conforming to nonconforming quartz substrates by eliminating variations in their cutting angle, but makes it possible to use nonconforming quartz substrates to offer customers low-cost quartz resonators of oscillation frequencies following various specs, by making easy, simple structural modifications of slightly changing the electrode arrangement or structure, or by making simple improvements to the conventional quartz resonator manufacturing process. In the manufacture of oscillators for use in consumer-electronics equipment, it is possible to fulfill any particular specs without inserting a temperature compensating circuit in the oscillation circuit. In regards to industrial equipment, any adjustments need not be made to the temperature compensating circuit in the oscillation circuit, and this improves the productivity of various communications equipment and various electronics equipment and reduces their manufacturing costs.
摘要:
A method for producing a thermoplastic resin micro-porous film wherein a thermoplastic resin and a solvent (A) are melted and kneaded together to prepare a solution, the solution is extruded and cooled to prepare a formed product in a gel state, and the residual solvent (A) is removed from the formed product, characterized in that in the step of removing the solvent (A) use is made of a non-aqueous solvent (B) which is compatible with the solvent (A) and not compatible with the thermoplastic resin, and has a boiling point of 100° or higher and a flashing point of 0° or higher. The use of the non-aqueous solvent (B) provides a production method which allows the removal of a solvent with good efficiency and also with the reduction of a fear of environmental pollution and catching fire.
摘要:
Disclosed is a semiconductor electrode which comprises a transparent electrode that is arranged on the surface of a light-transmitting substrate. The transparent electrode is provided with a metal oxide layer on a surface that is on the reverse side of a surface that is in contact with the substrate. The metal oxide layer contains fine silicon particles, which absorb a specific wavelength (11), and fine metal oxide particles. The fine silicon particles are arranged between the fine metal oxide particles.
摘要:
A scroll-type fluid machine has a drive scroll which is rotatably supported by a novel bearing arrangement. The bearing arrangement includes a bearing housing which is detachably mounted on a casing of the fluid machine. A journal bearing which rotatably supports a drive shaft of the drive scroll is secured inside the bearing housing. An oil seal surrounds the drive shaft beneath the bearing, and grease fills the space between the bearing and the oil seal.
摘要:
A submerged electric motor comprises an outer hollow cylinder formed of a stainless steel, a stator iron core fixed on the inside of the outer cylinder, an annular end plate of a general structural rolled steel welded to an annular end portion formed between the outer hollow cylinder and an inner hollow cylinder coaxial with it by using a welding wire of the stainless steel. A combined deposit metal and fused portion underlaid with the end plate is machined to have an end surface flush with that of the end plate. A bracket is fixed to those end surfaces through bolts. Also a sheet-shaped soft sealing member may be interposed between the bracket and the machined end plate.
摘要:
A mold type motor comprises a molded resin frame covering the surfaces of a stator iron core and a coil end and molded resin brackets detachably fitted on the end openings of the molded resin frame wherein a surge absorber unit is embedded in the molded resin frame and is electrically connected to a grounding element.
摘要:
A method of producing an anti-reflection film includes forming a first layer on a transparent substrate, forming a second layer on the first layer, and forming the third layer on the second layer. When an optical admittance Y at a surface of the second layer is represented by, Y = H E = ( x + iy ) where i is the imaginary number unit, thicknesses and reflective indexes of the substrate, first layer, second layer, and third layer are selected so that x and y satisfy the following formula, 0.9x{(n2−n02)/2n0}2
摘要:
An optical substrate includes a transparent substrate; an interference spot-preventing layer composed of at least one sublayer, the interference spot-preventing layer being coated on the transparent substrate; and a hard coat layer disposed on the interference spot-preventing layer. In the optical substrate, when the complex refractive index of the hard coat layer at light of 550 nm is represented as nH−ik, nH is 1.45 to 1.59 and k is substantially zero. When the optical admittance of the interface between the interference spot-preventing layer and the hard coat layer is represented as (x+iy), x and y satisfy the formula of (x−nH)2+y2≦0.08.
摘要翻译:光学基板包括透明基板; 由至少一个子层构成的干涉防止层,所述干涉斑防止层被涂覆在所述透明基板上; 以及设置在防干扰层上的硬涂层。 在光学基板中,当550nm光强度下的硬涂层的复折射率表示为n H -ik时,n H = 1.45〜1.59,k 基本为零。 当干涉防止层和硬涂层之间的界面的光学导纳表示为(x + iy)时,x和y满足下式(xnH H)2 SUP> + y <2> <= 0.08。
摘要:
An emulsion composition of a modified polypropylene. It can have exceedingly improved emulsion stability because the modified polypropylene used has extremely high solubility in solvents and is easily emulsifiable. The modified-polypropylene emulsion composition comprises water and a modified polypropylene dispersed and emulsified therein, and is characterized in that the modified polypropylene has a racemic diad content [r] of 0.12 to 0.88 and has hydrophilic functional groups in a number of 0.5 or larger on the average per molecular chain of the polypropylene.