摘要:
This specification discloses a thermistor composition comprising a thermistor characteristic powder, a bismuth containing borosilicate glass frit and an electrically conductive powder comprising a mixture of a noble metal powder and ruthenium oxide powder which is selected from RuO.sub.2 + Ag and RuO.sub.2 + Au wherein the mixing ratio of the metal oxide thermistor characteristic powder, the glass and the electrically conductive powder is in the area of the quadrilateral ABCD in the triangular diagram of the accompanying FIG. 1 and the amount of the ruthenium oxide powder is 15-95% by weight of total of the noble metal powder and the ruthenium oxide powder, the vertexes A, B, C and D of the quadrilateral ABCD being the points showing the following compositions:______________________________________ Sum of the amounts of The metal oxide the noble metal powder thermistor charac- and the ruthenium teristic powder oxide powder Glass frit (% by weight) (% by weight) (% by weight) ______________________________________ A 20 10 70 B 70 10 20 C 30 50 20 D 20 50 30 ______________________________________ This specification further discloses a thick film thermistor using said thermistor composition.
摘要:
A thick film thermistor composition is prepared by mixing metal oxide powders of at least two of Mn, Co and Ni, and oxide powder of Ru as a noble metal, firing the resulting mixture, thereby obtaining a compound oxide thermistor of spinel structure, pulverizing the resulting compound oxide thermistor, and mixing and kneading the resulting thermistor powder with glass powder and oxide powder of Ru for adjusting a resistance.
摘要:
A gas detection device and a method for detecting a gas where gas information including concentrations of gas components in a mixed gas, concentration, presence of specific gas components and the like is detected by measuring, e.g., the output voltages of a plurality of gas sensors having different gas selectivities. The gas selectivities, as a characteristic constant of the specific gas sensor, was previously determined. The measured output voltages and gas selectivities are then used for solving plural simultaneous equations for gas concentrations.
摘要:
A porcelain composition comprising Pb(Fe.sub.2/3 W.sub.1/3)O.sub.3, PbTiO.sub.3 and Pb(Yb.sub.1/2 Nb.sub.1/2)O.sub.3 preferably within the range as defined by closed area of A-B-C-D-A in the accompanying triangular diagram can give a sintered product by sintering at a temperature as low as 1000.degree. C. or lower. The resulting sintered product has a high relative dielectric constant and a small dielectric loss tangent.
摘要:
Disclosed herein is a critical temperature sensitive resistor material which comprises 60 to 90% by weight of VO.sub.2 and 40 to 10% by weight of RuO.sub.2. This material exhibits hysteresis of resistance that decreases remarkably over a temperature range in which the resistance varies greatly, and is hence used for measuring the temperature maintaining a high precision.
摘要:
A gas detecting apparatus is disclosed in which detection outputs from a plurality of semiconductor gas detecting elements different in gas detection characteristic from each other and previously-obtained characteristic values of the semiconductor gas detecting elements for a mixed gas are subjected to operational processing to detect one or more specified constituent gases contained in the mixed gas, and in which when the specified constituent gas is detected, the detection information is announced by some means, and also the supply of gas is stopped or a supply gas is diluted.
摘要:
A method for manufacturing the insulating layers of a glass multilayer wiring board from a mixture of (1) 30-90 wt. % of a borosilicate glass consisting of 55-75 wt. % of SiO.sub.2, 13-25 wt. % of B.sub.2 O.sub.3, 5-13 wt. % of Al.sub.2 O.sub.3, each 1-5 wt. % of PbO, MgO, and BaO, and each 1-2 wt. % of Na.sub.2 O and K.sub.2 O and (2) 70-10 wt. % of a silica glass, is provided.
摘要:
A low temperature-sinterable dielectric composition is provided, whose sintered composition when prepared by firing a uniform mixture consisting of lead ferrotungstate, lead titanate and manganese dioxide at a temperature of not higher than 1,000.degree. C. has the general formula A.Pb(Fe.sub.2/3 W.sub.1/3).sub.1-x Ti.sub.x O.sub.3 +B.MnO.sub.2, wherein 0.005.ltoreq..times..ltoreq.0.65, A=0.95-0.9995, and B=0.0005-0.05, a relative dielectric constant of at least 2,000 at 25.degree. C., a dissipation factor (tan .delta.) of not more than 5% at 25.degree. C., and a specific resistance of at least 10.sup.9 .OMEGA..cm at 25.degree. C. Also provided is a thick film capacitor having a dielectric layer prepared from said composition.
摘要:
The multilayer circuit board is constituted of an inorganic insulating material such as a crystallizable glass, crystalline oxide or noncrystallized glass; a conductive material such as a metal or a mixture of a metal with noncrystallized glass; a resistor material consisting of a mixture of a conductive material with the crystallizable glass or noncrystallized glass; and a dielectric material consisting of a mixture of a barium titanate-other oxide mixture with the noncrystallized glass or crystallizable glass, of a lead-containing perovskite type oxide or of a lead-containing laminar bismuth oxide, said board has a multilayer structure wherein a first insulating layer; a first resistor circuit or alternatively first capacitor circuit or alternatively first resistor-capacitor circuit; a second insulating layer; a second resistor circuit or alternatively second capacitor circuit or alternatively second resistor-capacitor circuit are superposed in this order, provided that the second insulating layer has a through-hole(s) filled with the conductive material, and a process for producing the same.