Abstract: A solid electrolytic capacitor (1) includes an anode foil (2a) having formed thereon an oxide film, a cathode foil (2c), and a separator (2d), and is equipped with a solid electrolyte (20) formed of an electroconductive polymer compound in a fine particle form, and a water-soluble compound solution (30) introduced to surround the solid electrolyte (20), the solid electrolyte (20) contains a polyol compound having a molecular weight of less than 200 and a number of hydroxy groups of 4 or more as a first water-soluble compound (2f1), the water-soluble compound solution (30) contains one kind or multiple kinds of a glycol compound in a liquid form as a second water-soluble compound (2f2), and the second water-soluble compound (2f2) has an average molecular weight of less than 400.

Abstract: A solid electrolytic capacitor (1) includes an anode foil (2a) having formed thereon an oxide film, a cathode foil (2c), and a separator (2d), and is equipped with a solid electrolyte (20) formed of an electroconductive polymer compound in a fine particle form, and a water-soluble compound solution (30) introduced to surround the solid electrolyte (20), the solid electrolyte (20) contains a polyol compound having a molecular weight of less than 200 and a number of hydroxy groups of 4 or more as a first water-soluble compound (2f1), the water-soluble compound solution (30) contains one kind or multiple kinds of a glycol compound in a liquid form as a second water-soluble compound (2f2), and the second water-soluble compound (2f2) has an average molecular weight of less than 400.

Abstract: A solid electrolytic capacitor (1) includes an anode foil (2a) having formed thereon an oxide film, a cathode foil (2c), and a separator (2d), and is equipped with a solid electrolyte (20) formed of an electroconductive polymer compound in a fine particle form, and a water-soluble compound solution (30) introduced to surround the solid electrolyte (20), the solid electrolyte (20) contains a polyol compound having a molecular weight of less than 200 and a number of hydroxy groups of 4 or more as a first water-soluble compound (2f1), the water-soluble compound solution (30) contains one kind or multiple kinds of a glycol compound in a liquid form as a second water-soluble compound (2f2), and the second water-soluble compound (2f2) has an average molecular weight of less than 400.

Abstract: Provided is a solid electrolytic capacitor having a lower leakage current than a conventional solid electrolytic capacitor. The solid electrolytic capacitor includes: an anode foil having a surface on which an oxide film is formed; a cathode foil; and a separator disposed between the anode foil and the cathode foil, wherein a solid electrolyte made of a conductive high-molecular weight compound in a fine particle form and a water-soluble high-molecular weight compound solution which is formed of a water-soluble high-molecular weight compound in a liquid form, water and alcohol having a nitro group are introduced into a gap formed between the anode foil and the cathode foil in a state where the water-soluble high-molecular weight compound solution surrounds the solid electrolyte.

Abstract: A solid electrolytic capacitor includes: an anode foil on which an oxide film is formed; a cathode foil; and a separator between the anode and cathode foils, wherein a solid electrolyte in a fine particle form made of a conductive high molecular weight compound and a water-soluble high-molecular weight compound in a liquid form are introduced into a gap between the anode and cathode foils in a state where the water-soluble high-molecular weight compound in a liquid form surrounds the solid electrolyte, and a ratio of an area that the solid electrolyte occupies in the gap is set to a value which falls within a range of 1 vol % to 30 vol %, and a ratio of an area that the water-soluble high-molecular weight compound in a liquid form occupies in the gap is set to a value which falls within a range of 10 vol % to 99 vol %.

Abstract: Provided is a solid electrolytic capacitor having a lower leakage current than a conventional solid electrolytic capacitor. The solid electrolytic capacitor includes: an anode foil having a surface on which an oxide film is formed; a cathode foil; and a separator disposed between the anode foil and the cathode foil, wherein a solid electrolyte made of a conductive high-molecular weight compound in a fine particle form and a water-soluble high-molecular weight compound solution which is formed of a water-soluble high-molecular weight compound in a liquid form, water and alcohol having a nitro group are introduced into a gap formed between the anode foil and the cathode foil in a state where the water-soluble high-molecular weight compound solution surrounds the solid electrolyte.

Abstract: Provided is a solid electrolyte capacitor which includes: a bottomed cylindrical housing which includes a bottom surface portion and a side surface portion raised from the bottom surface portion, and has an opening portion formed on an edge portion of the side surface portion; a capacitor element which is accommodated in the inside of the housing, and is formed by winding an anode foil and a cathode foil in an overlapping state with a separator interposed therebetween and by filling a space formed between the anode foil and the cathode foil with a solid electrolyte; a sealing member which seals the opening portion of the housing in a state where the capacitor element is accommodated in the inside of the housing; and a composite sheet which is arranged between the bottom surface portion of the housing and the capacitor element, and has the structure where a resin made of a high-molecular weight compound is retained in a fiber sheet containing at least cellulose fibers.

Abstract: A solid electrolyte capacitor includes a bottomed cylindrical housing having a bottom surface portion, a side surface portion raised from the bottom surface portion and an opening portion formed on an end portion of the side surface portion; a capacitor element housed in the inside of the housing, the capacitor element being formed by winding an anode foil and a cathode foil in an overlapping state with a separator interposed therebetween and by filling a solid electrolyte between the anode foil and the cathode foil; and a sealing member sealing the opening portion of the housing in a state where the capacitor element is housed in the inside of the housing, wherein an oxide film repairing body made of a hydrophilic synthetic resin is disposed at least one of between the bottom surface portion and the capacitor element of the housing and between the capacitor element and the sealing member.

Abstract: A solid electrolyte capacitor includes an anode foil on a surface of which an oxide film is formed, a cathode foil, and a separator. A gap between the anode foil and the cathode foil is filled with a solid electrolyte which contains a conductive fine particles containing a conductive polymer compound and a hydrophilic polymer compound. The hydrophilic polymer compound has a structure expressed by a following chemical formula (I) and a structure expressed by a following chemical formula (II). —(R1—O)—??(I) —(R2—O)—??(II) In the formula (I) and the formula (II), R1 and R2 are groups selected from the set consisting of a substituted or unsubstituted alkylene, a substituted or unsubstituted alkenylene, and a substituted or unsubstituted phenylene, and represent mutually different groups.

Abstract: Provided is a solid electrolyte capacitor which includes: a bottomed cylindrical housing which includes a bottom surface portion and a side surface portion raised from the bottom surface portion, and has an opening portion formed on an edge portion of the side surface portion; a capacitor element which is accommodated in the inside of the housing, and is formed by winding an anode foil and a cathode foil in an overlapping state with a separator interposed therebetween and by filling a space formed between the anode foil and the cathode foil with a solid electrolyte; a sealing member which seals the opening portion of the housing in a state where the capacitor element is accommodated in the inside of the housing; and a composite sheet which is arranged between the bottom surface portion of the housing and the capacitor element, and has the structure where a resin made of a high-molecular weight compound is retained in a fiber sheet containing at least cellulose fibers.

Abstract: A solid electrolytic capacitor includes: an anode foil on which an oxide film is formed; a cathode foil; and a separator between the anode and cathode foils, wherein a solid electrolyte in a fine particle form made of a conductive high molecular weight compound and a water-soluble high-molecular weight compound in a liquid form are introduced into a gap between the anode and cathode foils in a state where the water-soluble high-molecular weight compound in a liquid form surrounds the solid electrolyte, and a ratio of an area that the solid electrolyte occupies in the gap is set to a value which falls within a range of 1 vol % to 30 vol %, and a ratio of an area that the water-soluble high-molecular weight compound in a liquid form occupies in the gap is set to a value which falls within a range of 10 vol % to 99 vol %.

Abstract: A solid electrolyte capacitor includes a bottomed cylindrical housing having a bottom surface portion, a side surface portion raised from the bottom surface portion and an opening portion formed on an end portion of the side surface portion; a capacitor element housed in the inside of the housing, the capacitor element being formed by winding an anode foil and a cathode foil in an overlapping state with a separator interposed therebetween and by filling a solid electrolyte between the anode foil and the cathode foil; and a sealing member sealing the opening portion of the housing in a state where the capacitor element is housed in the inside of the housing, wherein an oxide film repairing body made of a hydrophilic synthetic resin is disposed at least one of between the bottom surface portion and the capacitor element of the housing and between the capacitor element and the sealing member.

Abstract: A solid electrolyte capacitor includes an anode foil on a surface of which an oxide film is formed, a cathode foil, and a separator. A gap between the anode foil and the cathode foil is filled with a solid electrolyte which contains a conductive fine particles containing a conductive polymer compound and a hydrophilic polymer compound. The hydrophilic polymer compound has a structure expressed by a following chemical formula (I) and a structure expressed by a following chemical formula (II). —(R1—O)—??(I) —(R2—O)—??(II) In the formula (I) and the formula (II), R1 and R2 are groups selected from the set consisting of a substituted or unsubstituted alkylene, a substituted or unsubstituted alkenylene, and a substituted or unsubstituted phenylene, and represent mutually different groups.

Abstract: An electrolytic solution, for use in an electrolytic capacitor, comprising a solvent and a solute wherein water accounts for 20 to 100% by weight of the solvent and the total solute content is from 1.5 to 44% by weight, and an electrolytic capacitor comprising a capacitor element, a case containing the capacitor element, and a sealant with which the case is sealed, the capacitor element comprising a pair of electrode foils each comprising a dielectric, a separator for isolating the electrode foils from each other, and the above electrolytic solution filled between the electrode foils.

Abstract: An electrolytic solution, for use in an electrolytic capacitor, comprising a solvent and a solute wherein water accounts for 20 to 100% by weight of the solvent and the total solute content is from 1.5 to 44% by weight, and an electrolytic capacitor comprising a capacitor element, a case containing the capacitor element, and a sealant with which the case is sealed, the capacitor element comprising a pair of electrode foils each comprising a dielectric, a separator for isolating the electrode foils from each other, and the above electrolytic solution filled between the electrode foils.

Abstract: An ultrasonic fault detector for inspecting the welds of a welded pipe comprises a casing in which contact medium is contained, an arm movable in the casing, a movable member rotatably secured to the arc, probe heads mounted on the movable member, and a pump for feeding the contact medium to the operating surface of the probe heads. The movable member is constructed to be dividable into two or more parts.

Abstract: A probe unit including a plurality of ultrasonic fault detection probes is moved along an object to be examined by a probe drive unit. The fault detection signals produced by the probes are transfer switched among a plurality of channels of a channel selector and the output of the channel selector is sampled by a high speed sampling device. A computer is connected to the probe drive unit, channel selector and the sampling device to apply operating signals thereto and to receive the outputs thereof.

Abstract: An ultrasonic defect detection apparatus comprising a supersonic probe, a rotary shaft for revolving the probe along the inner surface of a pipe to be examined, and a hollow shaft removably connected to the rotary shaft for vertically moving the probe. Water acting as a contact medium is circulated between the operating surface of the probe and a water tank through the rotary shaft and the hollow shaft. The apparatus is inserted into a pipe to be examined such as the control rod housing of an atomic reactor through the bottom opening of the pipe, and can be operated from a remote place for the sake of safety.