摘要:
A process for the preparation of a titanate which comprises adding an aqueous solution containing ions of titanium and at least one metal selected from the group consisting of Ba, Ca, Sr, Zn, Cd and Pb to an aqueous alkaline solution containing hydrogen peroxide, recovering the resulting precipitate and heating the precipitate at a temperature not lower than 100.degree. C to give the titanate of the metal as used in uniformly fine particles. The resulting titanate can be used as ceramic materials for electronic elements.
摘要:
A method of forming a metal interconnection that has a favorable cross-sectional shape is provided without the fear of side etching, even in a sparse arrangement of metal interconnections. The method, the following structure is employed. A region for placing a dummy metal interconnection is provided close to a region in which a metal interconnection is formed. A trench is formed in the dummy metal interconnection region and a resist pattern for the metal interconnection is then formed, giving the resist above the trench a large surface area per unit area. The metal interconnection is subsequently formed by dry etching in which an organic component from the resist above the trench forms a solid sidewall protection film, permitting anisotropic etching. The metal interconnection can thus have a favorable cross-sectional shape.
摘要:
A method of forming a metal interconnection that has a favorable cross-sectional shape is provided without the fear of side etching, even in a sparse arrangement of metal interconnections. The method, the following structure is employed. A region for placing a dummy metal interconnection is provided close to a region in which a metal interconnection is formed. A trench is formed in the dummy metal interconnection region and a resist pattern for the metal interconnection is then formed, giving the resist above the trench a large surface area per unit area. The metal interconnection is subsequently formed by dry etching in which an organic component from the resist above the trench forms a solid sidewall protection film, permitting anisotropic etching. The metal interconnection can thus have a favorable cross-sectional shape.
摘要:
A liquidometer composed of a siphon for emitting a sample liquid stored in a reservoir and a liquid level sensor for sensing the level of the sample remained in the reservoir. The siphon further includes a pair of sensors for counting the number of emission thereof, while the liquid level sensor includes two rows of resistive film with a plurality of sensing elements embedded therein. Outside the liquidometer, there are provided a counter connected to the emission sensor, a level calculator connected to the liquid level sensor, and a calculator coupled to both. A gross amount of the sample liquid having been measured for a period of hours is obtained by adding together a count signal from the counter which represents the quantity of the sample liquid fully stored in the reservoir and a signal from the level counter which represents the liquid level of the remaining sample liquid. Moreover, variations in the quantity of the sample for a predetermined period is computed by the calculator in response to its internal clock.
摘要:
A liquid sensor for detecting, in a non-contact manner, whether an electrolyte solution is flowing through a pipeline. A pair of electrodes, on which an AC voltage is impressed, are mounted on the outer surface of a pipeline formed of a material having a high dielectric constant, such as a ceramic, and a discrimination between the presence and the absence of the electrolyte solution in the pipeline is made based on variations in capacitance between the electrodes. In the presence of the electrolyte solution flowing through the pipeline, the capacitance between the electrodes is high because of the conductivity of the electrolyte solution. In the absence of the electrolyte solution flowing through the pipeline, the capacitance is determined by air and is, therefore, low. Since the electrodes are maintained in a non-contact relation with the electrolyte solution, degradation of characteristics due to corrosion is obviated. The absence of intermediates which, if present, would cause a lowering in detection sensitivity ensures an extremely high accuracy of detection.
摘要:
A magnetic sensor includes magnetic sensor elements arrange on the upper surface of a bobbin and an input/output section provided on the lower surface of the bobbin wherein the magnetic sensor elements and the input/output section are connected through a wiring pattern formed on the bobbin by electroless plating.
摘要:
A device for measuring displacement comprises a pair of sensor elements of which output voltage changes stepwise in dependency upon displacement of a measurement object, a differentiating circuit for detecting time points at which the output voltage of the pair of sensor elements suddenly changes, and a counter for counting the sudden change time points of the output voltage detected by the differentiating curcuit.
摘要:
A temperature detector comprises a pyroelectric device (10) having electrodes (11, 12) on both main surfaces, with an insulating film (13) formed on one of the main surfaces. An impedance converting circuit formed of a field effect transistor (20) and resistance elements (18, 19) is electrically and physically connected between an electrode (11) exposed through a hole (14) formed in the insulating film and electrodes (15, 16, 17) formed on the insulating film. The detector is entirely covered by molded resin (24). Consequently, problems of disconnection and short circuit of leads between the pyroelectric device and the impedance converting circuit can be eliminated.
摘要:
A charge completion detector comprises a thermoelectric detecting element outputting a thermally generated electromotive force in correspondence with the rise of temperature incidental to the completion of charging a secondary cell, and detecting means electrically connected to the thermoelectric detecting element for detecting the thermally generated electromotive force generated in the thermoelectric detecting element. The thermoelectric detecting element comprises a base material of semiconductive ceramics and a plurality of pairs of electrodes formed spaced apart from each other by a prescribed distance on the base material for forming hot junctions and cold junctions. A heat radiating member is thermally coupled to the cold junctions of the base material. The temperature of the hot junction side thermally coupled to the secondary cell will be approximately the same as that of the secondary cell while the temperature of the cold junction side is kept at an environmental temperature. The rise of temperature is detected based on the change of the thermally generated electromotive force based on the difference between the temperatures of the hot junctions and cold junctions.
摘要:
An electric double-layer capacitor has at least one or two elements. Each element includes a charge storage part, a pair of collectors arranged to hold the charge storage part, and a gasket enclosing the charge storage part and being arranged between the collectors to be thermally adhered to the collectors. Each collector is formed from a conductive polyethylene sheet which is provided with conductivity by a carbon material and has a multi-layer structure including polyethylene materials of different density levels.