摘要:
The present invention is designed to provide an insulation coil with high insulation reliability using a dry mica tape, an integral impregnation coil and a mica tape for the electrical rotating machines using these coils, said mica tape having a long shelf life and capable of preventing run-off of the impregnating epoxy resin composition during curing, with the cured product of said epoxy resin composition being high in heat resistance. It is also envisaged to provide a single insulation coil using a mica tape containing epoxy adduct imidazole as an epoxy resin curing catalyst or a mica tape containing a mixture of epoxy adduct imidazole and zinc naphthenate. An integral impregnation coil made by using said insulation coil and an epoxy resin composition, and the electrical rotating machines using such coils are also provided.
摘要:
There is disclosed an SED formed by arranging a front substrate having a plurality of fluorescent layers and a metal back and a back substrate having a plurality of electron emitting elements and wiring lines for the elements so that the substrates face each other to join peripheral edge portions of the substrates to each other. The metal back is electrically divided into a plurality of island-like regions, and connected to a common electrode arranged around the regions. The common electrode has a plurality of electrode films separated from one another in a longitudinal direction of the common electrode and an annular resistance film. The resistance film is laminated thereon so as to electrically connect the plurality of electrode films to one another, and connected to an edge portion of the metal back.
摘要:
A ceramic member is constituted with a zirconia-containing ceramic material containing 20% by volume or more of a zirconia series ceramic phase mainly composed of a zirconium oxide. The zirconia-containing ceramic material satisfies: KC/(dA)≧5 by using an exponential value A set within a range from −0.41 to −0.37 width, d being an average grain size (unit: &mgr;m) and KC being a fracture toughness value (unit: MPa·m½). An edge portion appearing in the form of a ridge is formed at an intersection between two edge forming surfaces 4a and 5 to the outer surface of the member, and the edge portion is formed as a sharp edge portion E having a width w of 0.15 mm or less for the top end of the edge appearing on a cross section taken along an arbitrary plane in perpendicular to the direction of the ridge.
摘要:
An AC adaptor that can reduce power not in use state, and a battery-operated electronic apparatus that can employ such an AC adaptor. An AC adaptor includes, (a) an input line along which an external AC voltage is input, (b) a first transformer for transforming the input AC voltage into a DC voltage at a first voltage level, (c) a switch provided on the primary side of the first transformer, (d) an output line along which a DC voltage on the secondary side of the first transformer is output externally, (e) a second transformer for transforming the input AC voltage into a DC voltage at a second voltage level that is higher than the first voltage level and for outputting the resultant DC voltage to the output line, and (f) an AC adaptor operation control circuit for comparing a voltage level across the output line with a reference voltage level, which is higher than the first voltage level and which is lower than the second voltage level, and for turning on the switch when the voltage level across the output line is lower than the reference voltage level, or for turning off the switch when the voltage level across the output line exceeds the reference voltage level. When an electronic apparatus does not require supply of power, the AC adaptor is detached from the system load in the apparatus, so that the voltage across the output line of the AC adaptor exceeds the reference voltage. In response to the result of the comparison, the switch on the primary side of the first transformer is turned off, and thus the operation of the first transformer can be halted.
摘要:
Arranging a linear antenna in a container, and connecting a condenser to a grounding side of the linear antenna, and/or between a plurality of linear antennas, and changing capacity of the condenser, thereby changing high-frequency voltage distribution on the linear antenna and/or on the plurality of linear antennas, and controlling electrostatic coupling between the plasma and the linear antenna and/or the plurality of linear antennas.
摘要:
A controlled battery charger for appropriately executing trickle charging for an electronic apparatus incorporating more than two batteries even when output terminal voltages of the incorporated batteries differ. A battery charger of the present invention includes a trickle charging circuit serially inserted between the output terminals of the first and the second batteries. An example of the trickle charging circuit is constituted by the first zener diode whose cathode is connected to the output terminal of the first battery, and the second zener diode whose cathode is connected to the output terminal of the second battery and whose anode is connected to the anode of the first zener diode, i.e., is constituted by two zener diodes serially connected in opposing directions. A resistor may be serially inserted between the anodes of the first and the second zener diodes. When the gap between the output terminal voltages Vbat1 and Vbat2 of the first and the second batteries becomes larger than the first or the second zener voltage Vz1 or Vz2, the trickle charging circuit enters the current-carrying state. For example, when the first battery is over-discharged and the gap between the output terminal voltages Vbat1 and Vbat2 is greater than the second zener voltage Vz2, the output terminals enter the current-carrying states, and a current flows from the second battery to the first battery until the gap of the voltage level is equal to or lower than the zener voltage Vz2. As a result, trickle charging for the first battery is performed by the second battery. The resistor inserted serially between the first and the second zener diodes controls the current volume that flows between the batteries in the current-carrying state into a microcurrent appropriate for trickle charging.
摘要:
A body frame for a motorcycle including a head pipe for supporting a rotary shaft for a handle, a pair of left and right main body frame elements, connected to the head pipe and extending rearwardly of the head pipe, a pair of left and right engine supporting members, connected to and extending downwardly from the main body frame elements adjacent to said head pipe, and a horizontally extending frame element connecting said left and right main body frame elements to each other at intermediate portions in the longitudinal direction. The engine is supported at least at a lower end portion of the left and right engine supporting members and intermediate portions in the longitudinal direction of the left and right main body frame elements and an upper end portion of a shock absorber is connected to the horizontally extending frame elements. A cast body frame is constructed of a light alloy and assembled by joining a leftward and a rightward divided block formed in shapes being vertically divided at the head pipe portion to each other. The main body frame elements are formed from a tubular member having a rectangular cross section wherein the widths of the opposite side walls are larger relative to the widths of upper and lower walls, and the widths of the side walls gradually vary from a front end portion connected to the head pipe to a rear end portion for forming at least a smaller area between the front end portion to the rear end portion.
摘要:
An improved process for the preparation of an aromatic hydroperoxide by oxidizing a hydroxyalkyl-substituted aromatic compound having at least one hydroxyalkyl group directly bonded to an aromatic ring carbon of the aromatic compound and being represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 each are a lower alkyl group, with hydrogen peroxide in the presence of an acid catalyst in a heterogeneous system of a water-immiscible inert aromatic hydrocarbon solvent at a reaction temperature of up to about 70.degree. C. while removing by-product water as an azeotrope with the aromatic hydrocarbon solvent in the oxidation system; characterized in that said oxidation is carried out while feeding a vapor of a water-immiscible inert aromatic hydrocarbon solvent having a temperature higher than the reaction temperature but not exceeding about 90.degree. C. into a liquid phase of the oxidation system.
摘要:
The present invention provides a method for analyzing growth of void of resin in a porous material which comprising the steps of inputting data of the shape of a porous material filled with a resin material, and dividing the shape of the porous material into three-dimensional solid elements; inputting physical properties of the porous material, and boundary conditions including a pressure that is applied to the porous material; obtaining a resin-density distribution in the porous material through fluid analysis using a database obtained by experimentally measuring in advance a temporal change in a volume of gas generated from the resin material and porous material during heating, changes in a compressive force and compressive displacement respectively occurring when the porous material impregnated with the resin is compressed, and a change in a flow resistance of the resin; and comprehensively grasping production, growth, and distribution of voids deriving from gas generation.
摘要:
The present method aims at preventing breakdown by selecting conditions for preventing the occurrence of voids via analysis. According to the present method, a database related to the time variation of amount of generated gas or number of moles when a solid member is heated is experimentally formulated in advance, and the amount of generated gas from the member and the specific heat ratio of gases are entered for analysis in order to predict via analysis the generation of voids within the resin material when the solid member is heated, to thereby select conditions for preventing voids.