Abstract: A dielectric ceramic composition consists essentially of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, PbTiO.sub.3, Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3 and Pb(Cu.sub.1/3 Nb.sub.2/3)O.sub.3, the mole percentages of said four components being as follows:Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 --50.0 to 75.0 mole %PbTiO.sub.3 --20.0 to 35.0 mole %Pb(Zn.sub.1/2 W.sub.1/2)O.sub.3 --0.5 to 15.0 mole %Pb(Cu.sub.1/3 Nb.sub.2/3)O.sub.3 --1.0 to 10.0 mole %The dielectric ceramic composition may further contain, as an additive, manganese in an amount of not more than 0.5 mole % in terms of MnO.sub.2. The composition possesses a high dielectric constant of not less than 8000 and a low sintering temperature of 900.degree. to 1000.degree. C.

Abstract: An electronic components assembly, in which electronic components provided with a lead terminal are taped so that they can be automatically inserted in a circuit substrate of an electronic instrument, is disclosed. A plurality of electronic components are mounted on a support tape at regular intervals by fixing said lead terminal onto said support tape.Since said support tape comprises a synthetic resin tape and said tape is formed of a thermoplastic synthetic resin containing inorganic fillers, said synthetic resin tape is superior in dimensional accuracy, tensile strength and heat-resistance and the high-speed taping and automatic insertion of electronic components are achieved.Where said support tape is formed of said synthetic resin tape together with an adhesive tape, said synthetic resin tape is subjected to surface treatments to improve the adhesion of said adhesive tape.

Abstract: A pyroelectric detector comprising a functional portion in which opposed electrodes 111 to 118 are formed on both surfaces of a pyroelectric type substrate 101 and four light receiving electrode portions a, b, c and d are structured by the opposed electrodes 111 to 118. Among the light receiving electrode portions a, b, c and d, the light receiving electrode portions a and c in odd-numbered positions constitute one light receiving electrode group A and the light receiving electrode portions b and d in even-numbered positions constitute the other light receiving electrode group B. The light receiving electrode portions a and c and the light receiving electrode portions b and d are electrically connected alternately and in series, and the light receiving electrode group A and the other light receiving electrode group B are connected to have opposite polarities.

Abstract: A vibration-isolating article is composed of a composite material comprising a powdered piezoelectric material and a high polymer, said composite material having electrical leakage paths. The electrical leakage paths may be formed by an electrically conductive powdered material incorporated into the composite material, or the powdered piezoelectric material per se, or a matrix of the high polymer.

Abstract: A method of making a double layer capacitor that is not susceptible to short-circuits due to smearing of conductive material along the edges during cutting. The device is formed with the bonding agent between an outer conductive member and an inner resilient insulator in a semi-hardened state. After initial fabrication and cutting, the device is compressed and the bonding agent completely hardened while the device is under compression. Release of the pressure sets up shear stresses that fracture any conductive material bridging the resilient insulating members and creates step portions at the exterior interface of the conductive material and the resilient insulator.

Abstract: A piezoelectric speaker comprises a piezoelectric vibrator (1) for vibrating in a bending mode, which is supported at its longitudinal intermediate position by a support member (6), whereby first and second portions (1a, 1b) of the piezoelectric vibrator (1) on both sides of the support member (6) are respectively supported in a cantilever manner. The piezoelectric vibrator (1) is connected at portions close to both ends thereof with a diaphragm (8) by coupling members (12) formed by wires, whereby bending vibration of the piezoelectric vibrator (1) is transferred to the diaphragm (8) thereby to drive the diaphragm (8).

Abstract: An amplitude-modulated generator includes a phase dividing circuit having a transistor which receives a modulating signal. The transistor is capable of generating from its emitter a first signal matched in phase with the modulating signal and from its collector a second signal opposite in phase with respect to the modulating signal. First and second switching diodes are provided which are alternately driven by a carrier wave and connected in opposite directions with each other between the emitter and the collector of the transistor. The carrier wave is applied to the junction between the first and second switching diodes. A signal is produced from the junction which is very similar to an amplitude modulated signal consisting of a carrier wave which is amplitude modulated by the modulating signal.

Abstract: An electronic component made by the steps of: preparing elongated tape (10), distributing a plurality of pairs of electronic elements (1) over the tape (10) lengthwise of the latter and bonding the pairs to the tape (10) in such a manner that the two elements (1) in each pair are positioned one in each of the first and second regions (12, 13) of the tape (10) separated from each other substantially by the longitudinal centerline (11) of the tape (10), folding the tape (10) along the longitudinal centerline (11) so that the two elements (1) in each pair are opposed at least partially to each other, preparing a terminal assembly (18) having a frame (17) on which a plurality of terminals (14, 15, 16) to be connected to the elements (1) are held so that they are distributed lengthwise of the frame (17), arranging the frame (17) parallel to the tape (10) and effecting connection between the terminals (14, 15, 16) and the elements (1), cutting the tape (10) along widthwise extending cutting lines to separate the se

Abstract: A laminated capacitor of a feed-through type includes a plurality of first and second type dielectric sheets. The first type dielectric sheet has a center electrode deposited on a front surface thereof, a first extending electrode extending from the center electrode and terminating at a particular side of the first type dielectric sheet, and a second extending electrode extending from the center electrode and terminating at the same particular side of the first type dielectric sheet in a spaced relationship with the first extending electrode. The second type dielectric sheet has a center electrode deposited on a front surface thereof, and a third extending electrode extending from the center electrode and terminating at a particular side of the second type dielectric sheet.

Abstract: A dielectric ceramic composition for microwave frequencies comprises a solid solution of BaO, SnO.sub.2, MgO and Ta.sub.2 O.sub.5, said solid solution being represented by the general formula:Ba(Sn.sub.x Mg.sub.y Ta.sub.z)O.sub.7/2-x/2-3y/2where x, y and z are mole fractions of the respective components, 0.04.ltoreq.x.ltoreq.0.26, 0.23.ltoreq.y.ltoreq.0.31, 0.51.ltoreq.z.ltoreq.0.65, and x+y+z=1.00.

Abstract: A composite part of a piezo-electric resonator and a condenser integrally joined together and a method of producing the composite part. A composite element is formed of a piezo-electric resonator and a condenser each provided with end electrodes at end portions thereof by fixedly integrating the piezo-electric resonator and the condenser under the condition that a gap serving as a vibration space is formed between the face of the piezo-electric resonator and the face of the condenser opposing the face of the piezo-electric resonator. This composite element is cut out of a pile of a laterally long piezo-electric resonator and a laterally long condenser by cutting it in the direction of width. This composite element is housed in a case and both end electrodes and a common electrode thereof are connected with lead terminals, the opening of the case being sealed.

Abstract: An electronic component having a rotary mechanism provided with a rotor, including a stator member and a combination component for rotating the rotor such that the rotary mechanism is mounted on the stator member. The combination component includes a plate member formed with a slot and a spring member having an engageable piece engageable with a recess of the rotor so as to be rotated together with the rotor through engagement of the engageable piece of the spring member with the recess of the rotor.

Abstract: A piezoelectric vibrator operating in a spreading vibration mode has a vibrating plate of permanently elastic metal. At least one main surface of the vibrating plate is mirror-finished.

Abstract: A piezoelectric resonating device utilizes double thickness vibration mode of the energy-trapped type and comprises a piezoelectric plate, input and output electrodes disposed at one surface of the piezoelectric plate and a common ground electrode disposed at the other surface of the plate. The common ground electrode is disposed to face against the input and output electrodes and the input and output electrodes are formed by a plurality of electrode segments. A plurality of piezoelectric resonating segments are coupled together each comprising the respective electrode segments and the common ground electrode.

Abstract: Apparatus for automatically producing a strip-like container housing chip-form electronic parts comprising a tape-like housing body provided with housing holes spaced thereon, a chip-form electronic part having no lead wire being housed in each of said housing holes.According to this automatic producing apparatus, a tape-like housing body is intermittently transported longitudinally, a respective chip-form electronic part being sequentially supplied by a supplying device into each housing hole provided on the housing body in the course of transportation thereof, the housing hole being sealed when the chip-form electronic part has been housed therein by a tape-like cover sheet supplied by a sheet supply device, the cover sheet being applied to the tape-like housing body by a cover sheet applying device, the aggregate of electronic parts thus produced being rolled round a reel of a winding device.

Abstract: A chip-type LC composite component in which an inductance element section (51) for producing an inductance component is superposed on a laminated capacitor section (34) for producing a capacitance component. Conductive paths (39, 40, 42, 43, 45, 46, 48, 49) included in the inductance element section (51) extend between outer electrodes (31, 33) of the laminated capacitor section (34). The inductance element (51) includes a laminated substance comprising a plurality of layers (39, 41, 44, 47, 50) obtained by firing paste containing powder of sintered ferrite, glass frit and organic binder and solidifying the same. The conductive paths (39, 40, 42, 43, 45, 46, 48, 49) included in the inductance element section (51) include conductive patterns formed on the respective layers of the laminated substance extending so as to produce an inductance component.

Abstract: A method of accommodating an electronic component in a casing, comprising the steps of: forming the casing by a pair of first and second casings made of thermoplastic resin; providing a terminal frame having a substrate portion, a plurality of lead terminals and at least two electrically conductive terminals; securing the electronic component to the substrate portion or integrally forming the electronic component with the substrate portion; interposing the substrate portion between the first and second casings; and establishing electrical conduction between the electrically conductive terminals so as to heat the substrate portion such that the first and second casings are attached to each other through melting thereof.

Abstract: A load-sensitive level detecting device for detecting the level of a powder or liquid comprises a piezoelectric vibrator (3), a case (1) which separates the object whose level is to be detected from the latter, the case (1) being formed with an opening (1b), which is closed by an elastic sheet (2) serving as a movable detecting section, whereby when the load exerted by the object is applied to the elastic sheet (2), the vibration of the piezoelectric vibrator (3) is constrained.

Abstract: A noise reduction filter which comprises a block of magnetizable material, and first and second laminated capacitors each having first and second terminal electrodes opposite to each other. The first and second capacitors are mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors spacedly confronting with each other. The filter also comprises a first electrode member partially extending through the block with its opposite end portions connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together.

Abstract: A surface acoustic wave device comprising a surface acoustic wave substrate member composed by forming an aluminum nitride film and a thin zinc oxide film successively on a glass substrate. The thickness h.sub.1 of the aluminum nitride film and the thickness h.sub.2 of the zinc oxide film are set within ranges of 0.1.ltoreq.h.sub.1 /.lambda..ltoreq.10 and 0.05.ltoreq.h.sub.2 /.lambda..ltoreq.0.3 (where .lambda. is representative of wavelength of Sezawa wave) respectively, thereby to utilize Sezawa wave or a similar mode wave transmitted on the surface acoustic wave substrate member in multi-layer structure.