Abstract: A temperature compensating ceramic dielectric of the present invention contains compositions consisting of 2.0 to 14.0 mole % of barium oxide, 51.0 to 63.5 mole % of titanium oxide and 22.5 to 47.0 mole % of neodymium oxide as NdO.sub.3/2. Among the composition range, however, ranges between 2.0 to 9.0 mole % of barium oxide and 60.0 to 63.5 mole % of titanium oxide are to be excluded. By adding 0.1 to 5.0% by weight of niobium oxide as NbO.sub.5/2 to the composition, the temperature compensating ceramic dielectric is obtained.

Abstract: A ceramic electronic component having a structure in which thin film electrodes made of a Ni-Al system alloy or a Ni-Cr-Al system alloy are formed so as to make contact with a functional ceramic thin film.

Abstract: A level sensor with an amplifier circuit includes one of the level detection resistor and the temperature compensation resistor as an input resistor or a grounding resistor to the negative input terminal of the operational amplifier, and includes the other resistor as a negative feedback resistor.

Abstract: A dielectric filter having band elimination characteristics includes a resonance circuit with a coupling terminal. A proximal portion of the coupling terminal and a ground electric potential portion of the filter are opposed in the vertical direction, and a stray capacitance element and an external coupling element are provided in the vertical direction between them. Thus it is possible to effect the mounting operation by first stacking the stray capacitance element and the external coupling element on the ground portion and on top of those securing the proximal portion of the coupling terminal. This structure simplifies the soldering and assembling operation, and also improves mass production.

Abstract: An inductor for noise reduction characterized in that wire is wound around a core member formed of a magnetic substance and the magnetic substance is composed of a material having insulation resistance of 0.5 to 5 kilo-ohms.

Abstract: A chip coil includes an insulating substrate on which a spiral coil conductor and first and second terminal electrodes are formed. The coil conductor and the terminal electrodes are made by forming a conductive film on the whole of both main surfaces of the insulating substrate and then etching the same. A first insulation film made of polyimide or polyamide is formed on the insulating substrate so as to cover the coil conductor and the terminal electrodes. The first insulation film is etched such that portions corresponding to the terminal electrodes are removed and a throughhole is formed at a portion corresponding in position to the innermost end of the coil conductor. A further conductive film is formed on the first insulation film and etched so as to form a connecting conductor, the ends of which are respectively connected to the innermost end of the coil conductor and the second terminal electrode, through the throughhole.

Abstract: A piezoelectric resonator of an energy-trapped type utilizing a second harmonic wave of the thickness-extensional vibration mode, in which an inner electrode is formed in a position at a height around the center of a piezoelectric substrate in the direction of thickness, outer electrodes are formed on both major surfaces of the piezoelectric substrate so as to be opposed to the inner electrode through a piezoelectric substrate portion, and the dimension of at least one of the outer electrodes in the direction of the length of the inner electrode is made smaller than the dimension of the outer electrode in the direction of the width of the inner electrode.

Abstract: 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.

Abstract: A surface accoustic wave device includes a substrate which is made up of single-crystalline dielectric member and a piezoelectric thin film epitaxially grown thereon. An aluminum electrode defining an interdigital electrode is formed along the interface between the dielectric member and the piezoelectric thin film. This aluminum electrode is formed of an aluminum film which is crystallographically oriented in a constant direction, whereby stressmigration of the aluminum electrode is suppressed, while enabling epitaxial growth of the piezoelectric thin film over the entire surface insert.

Abstract: A dielectric resonator comprising a dielectric unit which is constructed by piling a plurality of plate-shaped dielectrics one on the other under pressure or adhering dielectrics to each other, so as to prevent an electric field in a resonance mode other than the dominant mode from passing through the faces thereof adhered to each other or brought in contact with each other under pressure, whereby the occurrence of a spurious response can be suppressed.

Abstract: A piezoelectric filter device of an energy-trapped type utilizing a higher harmonic in the thickness-extensional vibration mode, having a plate-shaped body made of a piezoelectric material. At least three electrodes are arranged so as to overlap each other while being separated by layers of the piezoelectric material in the direction of thickness of the plate-shaped body. At least one of the electrodes comprises a plurality of divided electrodes which are substantially coplanar. At least one of the divided edlectrodes constitutes an input terminal and at least one of the remaining divided electrodes constitutes an output terminal. A region of the body, around the vibrating region, where the electrodes are overlapped with each other, is uniformly subjected to polarization processing in the direction of thickness.

Abstract: A magnetic material for microwave and millimeter wave frequencies consists essentially of a composition represented by the general formula:(Y.sub.1-x Gd.sub.x).sub.w (Fe.sub.1-y-z Al.sub.y Mn.sub.z).sub.8-w O.sub.12where x, y, z and w take a value within the following respective ranges: 0.ltoreq.x.ltoreq.0.35, 0.ltoreq.y.ltoreq.0.16, 0.01.ltoreq.z.ltoreq.0.04, and 3.02.ltoreq.w.ltoreq.3.06.

Abstract: In order to increase the thermoelectromotive force delivery by a thermoelectric element as a whole or regulate the temperature coefficient of such thermoelectromotive force, n-type semiconductive ceramic members and p-type semiconductive ceramic members are assembled to form such element and are electrically connected with each other. The n-type and p-type semiconductive ceramic members are provided in the form of plate members, which are stacked so as to be interconnected by insulating layers and conductor layers. The insulating and conductor layers are provided on opposite surfaces of adjacent plate members by thick film printing and baking performed thereafter.

Abstract: This dielectric resonator comprises a cylindrical hollow case made of metal, a cylindrical hollow dielectric resonator element which is fixed and held in the case, and a dielectric tuning unit which is inserted into or withdrawn from a hollow portion of the dielectric resonator element. The hollow portion of the dielectric resonator element is formed by at least one, or a plurality of, cutout portions which extend along respective radii of the cylindrical dielectric resonator. In this dielectric resonator, the overall effective dielectric constant as a whole can be varied by inserting the tuning unit into or withdrawing it from the hollow portion of the dielectric resonator element. When the tuning unit is withdrawn from the hollow portion of the dielectric resonator element, part of an electric field path at the dielectric resonator element is interrupted by the cutout portions.

Abstract: A thermal type flow detecting apparatus comprises a thermoelectric detecting element (5) having a base material (1) of a ceramics semiconductor and detecting electrodes (2, 3) respectively arranged in the vicinity of both longitudinal ends on one major surface of the base material, thereby constituting a thermoelectric element, and heating electrodes (4) formed to be opposed to each other with the base material interposed therebetween on both surfaces of the base material in a central portion between both the detecting electrodes.

Abstract: 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.

Abstract: A data communications system includes a high impedance input circuit, which serves as an input circuit linking between a communications interface and a data terminal equipment, and a power supply circuit which obtains a receiving signal from an input terminal of the high impedance input circuit and draws electric power from the receiving signal to supply to the data communications system.

Abstract: A deflection yoke device is a device for deflecting an electron beam traveling inside a CRT, and a deflection yoke device which is driven by a particularly high frequency has horizontal deflection coils each wound into a saddle-type configuration. In the invention, each horizontal deflection coil is provided with an intermediate terminal, and a damping circuit is provided between the intermediate terminals or between each intermediate terminal and a high voltage-side terminal or a low voltage-side terminal. The damping circuit eliminates electrical oscillations occurring in the horizontal deflection coil.

Abstract: In a frost and dew sensor composed of two thermosensitive resistors, a power source and an arithmetic circuit, frost or dew is detected from the change of a differential temperature between the two thermosensitive resistors as two different currents from the power source are supplied to the respective thermosensitive resistors. In an alternative form, the sensor has a single thermosensitive resistor, which is energized as two different currents are alternately supplied from the power source so that frost or dew is detected by comparison of the time-lags between the two outputs from the thermosensitive resistor.