Abstract: A piezoelectric device includes a first piezoelectric sensor having a first inner conductor, a first piezoelectric body, and a first outer conductor, a second piezoelectric sensor having a second inner conductor, a second piezoelectric body, and a second outer conductor, and a differential signal forming unit having a pair of differential input terminals. When an external force acts on the first piezoelectric body, the first piezoelectric sensor generates a first voltage, and the second piezoelectric sensor generates a second voltage having a voltage different in polarity from the first voltage. The first inner conductor is electrically connected to one differential input terminal. The second inner conductor is electrically connected to the other differential input terminal. The differential signal forming unit forms a differential signal based on a first signal input to the one differential input terminal and a second signal input to the other differential input terminal.

Abstract: A sheet set for encapsulating a solar battery including a first encapsulating sheet and a second encapsulating sheet which are disposed between a light-incident surface protective member and a back surface protective member, and are used to encapsulate solar battery elements is provided. When the first encapsulating sheet and the second encapsulating sheet are subjected to a heating and pressurization treatment in which the first encapsulating sheet and the second encapsulating sheet are heated and depressurized under defined conditions, a volume resistivity of the first encapsulating sheet measured under defined conditions, is higher than a volume resistivity of the second encapsulating sheet. The first encapsulating sheet is disposed between the light-incident surface protective member and the solar battery elements. The second encapsulating sheet has at least one polar group selected from a carboxyl group, an ester group, a hydroxyl group, an amino group, and an acetal group.

Abstract: An encapsulating material for solar cell is made of a resin composition containing a crosslinkable resin, and satisfies the following 1) and 2). 1) When the encapsulating material for solar cell is immersed in acetone at 23° C. for one hour after a crosslinking treatment in which the encapsulating material for solar cell is heated and depressurized at 150° C. and 250 Pa for three minutes, and then is heated and pressurized at 150° C. and 100 kPa for 15 minutes, an acetone-absorbing ratio is in a range of 3.5 weight % to 12.0 weight % with respect to the weight of the above-described crosslinking-treated encapsulating material for solar cell. 2) A volume resistivity of the above-described crosslinking-treated encapsulating material for solar cell, which is based on JIS K6911 and measured at a temperature of 100° C. with an applied voltage of 500 V, is in a range of 1.0×1013 ?·cm to 1.0×1018 ?·cm.

Abstract: A solar cell module (10) includes a light-incident surface protective member (14), a back surface protective member (15), solar cell elements (13), and an encapsulating layer (11) that encapsulates the solar cell elements (13) between the light-incident surface protective member (14) and the back surface protective member (15). The volume resistance per square centimeter at 85° C. between the light-incident surface protective member (14) and the solar cell element (13) is in a range of 1×1013 ?·cm2 to 1×1017 ?·cm2.

Abstract: A sheet set for encapsulating a solar battery including a first encapsulating sheet and a second encapsulating sheet which are disposed between a light-incident surface protective member and a back surface protective member, and are used to encapsulate solar battery elements is provided. When the first encapsulating sheet and the second encapsulating sheet are subjected to a heating and pressurization treatment in which the first encapsulating sheet and the second encapsulating sheet are heated and depressurized under defined conditions, a volume resistivity of the first encapsulating sheet measured under defined conditions, is higher than a volume resistivity of the second encapsulating sheet. The first encapsulating sheet is disposed between the light-incident surface protective member and the solar battery elements. The second encapsulating sheet has at least one polar group selected from a carboxyl group, an ester group, a hydroxyl group, an amino group, and an acetal group.

Abstract: An encapsulating material for solar cell is made of a resin composition containing a crosslinkable resin, and satisfies the following 1) and 2). 1) When the encapsulating material for solar cell is immersed in acetone at 23° C. for one hour after a crosslinking treatment in which the encapsulating material for solar cell is heated and depressurized at 150° C. and 250 Pa for three minutes, and then is heated and pressurized at 150° C. and 100 kPa for 15 minutes, an acetone-absorbing ratio is in a range of 3.5 weight % to 12.0 weight % with respect to the weight of the above-described crosslinking-treated encapsulating material for solar cell. 2) A volume resistivity of the above-described crosslinking-treated encapsulating material for solar cell, which is based on JIS K6911 and measured at a temperature of 100° C. with an applied voltage of 500 V, is in a range of 1.0×1013 ?·cm to 1.0×1018 ?·cm.

Abstract: Disclosed is an encapsulating material for solar cell containing an ethylene/?-olefin copolymer satisfying the following requirements (a1) to (a4): (a1) the content ratio of structural units derived from ethylene is from 80 to 90 mol % and the content ratio of structural units derived from ?-olefin having 3 to 20 carbon atoms is from 10 to 20 mol %; (a2) MFR is from 10 to 50 g/10 minutes as measured under the conditions of a temperature of 190 degrees centigrade and a load of 2.16 kg in accordance with ASTM D1238; (a3) the density is from 0.865 to 0.884 g/cm3 as measured in accordance with ASTM D1505; and (a4) the shore A hardness is from 60 to 85 as measured in accordance with ASTM D2240.

Abstract: Disclosed is an encapsulating material for solar cell containing an ethylene/?-olefin copolymer satisfying the following requirements (a1) to (a4): (a1) the content ratio of structural units derived from ethylene is from 80 to 90 mol % and the content ratio of structural units derived from ?-olefin having 3 to 20 carbon atoms is from 10 to 20 mol %; (a2) MFR is from 10 to 50 g/10 minutes as measured under the conditions of a temperature of 190 degrees centigrade and a load of 2.16 kg in accordance with ASTM D1238; (a3) the density is from 0.865 to 0.884 g/cm3 as measured in accordance with ASTM D1505; and (a4) the shore A hardness is from 60 to 85 as measured in accordance with ASTM D2240.

Abstract: An antenna core produced by shaping a soft magnetic metal powder with the use of a resin as a binder, wherein the soft magnetic metal powder is an amorphous soft magnetic metal powder or a nanocrystal-containing amorphous soft magnetic metal powder, of the general formula (1): (Fe1-x-yCoxNiy)100-a-b-cSiaBbMc (1), and wherein the resin as a binder is a thermosetting resin. In the formula, M is at least one element selected from the group consisting of Nb, Mo, Zr, W, Ta, Hf, Ti, V, Cr, Mn, Y, Pd, Ru, Ga, Ge, C, P, Al, Cu, Au, Ag, Sn and Sb. Each of x and y is an atomic ratio and each of a, b and c an atomic %, satisfying the relationships: 0?x?1.0, 0?y?0.5, 0?x+y?1.0, 0?a?24, 1?b?30, 0?c?30 and 2?a+b?30.

Abstract: A laminate of a magnetic substrate comprising a high molecular compound layer and a magnetic metal thin plate wherein the volume resistivity defined in JIS H 0505 in a direction perpendicular to the high molecular compound layer surface of the laminate is less than 108 ?cm. The laminate is provided with an electrical continuity point created among magnetic metal thin plates such that the high molecular compound inside the laminate is pushed out to the outside of the laminate by pressurizing the laminate. The laminate can exhibit high thermal conductivity in order to prevent deterioration of heat releasing properties caused by low thermal conductivity when exothermic heat due to the core loss of the laminate of the magnetic substrate is released to the outside.

Abstract: An antenna core produced by shaping a soft magnetic metal powder with the use of a resin as a binder, wherein the soft magnetic metal powder is an amorphous soft magnetic metal powder or a nanocrystal-containing amorphous soft magnetic metal powder, of the general formula (1): (Fe1-x-yCoxNiy)100-a-b-cSiaBbMc (1), and wherein the resin as a binder is a thermosetting resin. In the formula, M is at least one element selected from the group consisting of Nb, Mo, Zr, W, Ta, Hf, Ti, V, Cr, Mn, Y, Pd, Ru, Ga, Ge, C, P, Al, Cu, Au, Ag, Sn and Sb. Each of x and y is an atomic ratio and each of a, b and c an atomic %, satisfying the relationships: 0?x?1.0, 0?y?0.5, 0?x+y?1.0, 0?a?24, 1?b?30, 0?c?30 and 2?a+b?30.

Abstract: A heat treatment was carried out in a pressurized condition on an amorphous metal ribbon containing Fe and Co as main components and being represented by the general formula: (Co(1?c)Fec)100?a?bXaYb. (In the formula, X represents at least one species of element selected from Si, B, C and Ge, Y represents at least one species of element selected from Zr, Nb, Ti, Hf, Ta, W, Cr, Mo, V, Ni, P, Al, Pt, Rh, Ru, Sn, Sb, Cu, Mn and rare earth elements, c, a and b satisfy 0?c?1.0, 10<a?35 and 0?b?30, respectively, and a and b are represented in terms of atomic %.) By carrying out a heat treatment in a pressurized condition in the same manner on a magnetic substrate comprising an amorphous metal ribbon and a heat resistant resin or a laminate of the substrates, not only the magnetic properties but also the mechanical properties and the processability are improved.

Abstract: The present invention is to provide a laminate of magnetic substrates having high thermal conductivity in order to prevent deterioration of heat releasing properties caused by low thermal conductivity when exothermic heat due to the core loss of the laminate of magnetic substrates comprising a magnetic metal thin plate and a high molecular compound is released to the outside. A laminate of magnetic substrates comprising a high molecular compound layer and a magnetic metal thin plate is used, wherein the volume resistivity defined in JIS H 0505 in a direction perpendicular to the high molecular compound layer surface of the laminate is less than 108 ?cm. The laminate is provided with an electrical continuity point created among magnetic metal thin plates such that the high molecular compound inside the laminate is pushed out to the outside of the laminate by pressurizing the laminate.

Abstract: The present invention provides a magnetic core whose outer surface has been coated without handling brittle ribbon to thereby impart insulating properties and shape retention properties to the magnetic core after annealing heat treatment, and further provides an adhesive resin composition for a magnetic core, which is useful for efficiently producing the above-mentioned magnetic core without using any organic solvent and which per se is stable to heat and elapse of time. By forming a coating film having a certain thickness or more on an outer surface using a composition containing a resin of specific properties, there can be obtained a magnetic core whose outer surface has been coated without handling brittle ribbon to thereby impart insulating properties and shape retention properties to the magnetic core after annealing heat treatment.

Abstract: A heat treatment was carried out in a pressurized condition on an amorphous metal ribbon containing Fe and Co as main components and being represented by the general formula: (Co(1-c)Fec)100-a-bXaYb. (In the formula, X represents at least one species of element selected from Si, B, C and Ge, Y represents at least one species of element selected from Zr, Nb, Ti, Hf, Ta, W, Cr, Mo, V, Ni, P, Al, Pt, Rh, Ru, Sn, Sb, Cu, Mn and rare earth elements, c, a and b satisfy 0?c?1.0, 10<a?35 and 0?b?30, respectively, and a and b are represented in terms of atomic %.) By carrying out a heat treatment in a pressurized condition in the same manner on a magnetic substrate comprising an amorphous metal ribbon and a heat resistant resin or a laminate of the substrates, not only the magnetic properties but also the mechanical properties and the processability are improved.

Abstract: The present invention provides a magnetic core whose outer surface has been coated without handling brittle ribbon to thereby impart insulating properties and shape retention properties to the magnetic core after annealing heat treatment, and further provides an adhesive resin composition for a magnetic core, which is useful for efficiently producing the above-mentioned magnetic core without using any organic solvent and which per se is stable to heat and elapse of time. By forming a coating film having a certain thickness or more on an outer surface using a composition containing a resin of specific properties, there can be obtained a magnetic core whose outer surface has been coated without handling brittle ribbon to thereby impart insulating properties and shape retention properties to the magnetic core after annealing heat treatment.

Abstract: A piezoelectric transformer has a piezoelectric substrate having first and second main faces. The substrate has first and second primary-side regions and a secondary-side region in its longitudinal direction in this order. The first region has a length of a half wavelength of stress distribution at the time of resonance in the longitudinal direction and has either positive or negative stress. The second region has a length of a half wavelength or less of the stress distribution and has either positive or negative stress. First and second electrode are respectively disposed on the first and second main faces in the first primary-side region, and the substrate between the first and second electrodes is polarized in the thicknesswise direction. Third and fourth electrodes are respectively disposed on the first and second main faces in the second primary-side region, and the substrate between the third and fourth electrodes is polarized in the thicknesswise direction.

Abstract: A piezoelectric transformer has a piezoelectric substrate having first and second main faces. The substrate has first and second primary-side regions and a secondary-side region in its longitudinal direction in this order. The first region has a length of a half wavelength of stress distribution at the time of resonance in the longitudinal direction and has either positive or negative stress. The second region has a length of a half wavelength or less of the stress distribution and has either positive or negative stress. First and second electrode are respectively disposed on the first and second main faces in the first primary-side region, and the substrate between the first and second electrodes is polarized in the thicknesswise direction. Third and fourth electrodes are respectively disposed on the first and second main faces in the second primary-side region, and the substrate between the third and fourth electrodes is polarized in the thicknesswise direction.