Abstract: Voltage or current or power supplied to the piezo-electric vibrator of an ultrasonic nebulizer is sensed and used as negative feedback to stabilize oscillation in the oscillator driving circuit.

Abstract: A novel non-linear resistance element or varistor element is provided by the invention. The body of the element is a ceramic sintered body mainly composed of titanium dioxide admixed with small amounts of oxides of niobium, tantalum and/or antimony and electrodes are provided with a metallic material. Different from the conventional varistor elements, the electrode is bonded to the sintered body with ohmic contact by the techniques of flame spraying or electroless plating depending on the kind of the metallic material for the electrode selected from silver, aluminum, nickel and the like. Further improvement is proposed to increase the bonding strength of lead wires on to the electrodes by soldering as accomplished by providing a layer of a material having good solder-receptivity on the electrode which also serves for preventing the oxidation of the electrode material.

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a magnetic powder and a binder and a rust inhibitor at a ratio of more than 0.1 wt. % based on resins of the binder.

Abstract: An inductance device comprises a drum core on which a coil is wound and which has a projection; a rectangular pot core having each concave part on the upper surface and the lower surface and having a hollow for fitting said drum core and a hole for fitting said projection of said drum core; electrode parts which are respectively formed on each side surface and said concave part of the upper surface of said pot core and on the bottom surface of said pot core; said drum core having said coil being fitted into said hollow of said pot core; and said coil being connected to said electrode parts at said concave part by each of lead terminals of said coil; and said drum core being sealed in said hollow.

Abstract: A magnetic tape cassette including a pressure pad which consists of a pad piece and a leaf spring holding the piece in place, characterized in that the leaf spring is formed, in one piece, of a pad-piece-holding portion supporting the back side of said pad piece, two wing portions and Y-shaped portions extending from the upper and lower edge sections of the both ends of said pad-piece-holding portion and joining said both wing portions is provided. The present pressure pad is capable of exerting a uniform pressure to a magnetic tape against a magnetic recording and reproducing head of a magnetic tape cassette recorder when said cassette is put in position of the recorder and the recorder is placed in the recording or reproducing mode.

Abstract: An electrode for electrolysis comprises a conductive substrate which is coated with a combination of palladium oxide and platinum metal or a combination of palladium oxide and Pt-Pd alloy which comprises 99 to 5 mole % of palladium component as Pd and 1 to 95 mole % of platinum component as Pt and at least 25 wt. % of palladium component being in a form of palladium oxide.

Abstract: In a process for producing an iron oxide having magnetite as a main component by heating to reduce a powder of an iron oxide or a hydrated iron oxide in an atmosphere for reduction, an improvement characterized in that said atmosphere for reduction comprises an inert gas, steam and a gas of an organic compound for reducing an iron oxide.

Abstract: A chip capacitor which has a substantially rectangular dielectric body having a pair of long sides, a pair of short sides perpendicular to said long sides, a pair of conductive confronting electrodes attached on the surface of the dielectric body so that the electrodes sandwich the dielectric body, a pair of terminals each provided along the related short side of the dielectric body and being electrically connected to the related electrode, and the junction point of each long side and each short side of the dielectric body is recessed. Preferably, the dielectric body is tapered towards the short sides.

Abstract: An SiO.sub.2 coated iron oxide powder used for the preparation of an acicular metallic iron powder or an acicular magnetic iron oxide powder, is produced by forming a slurry of hydrated iron oxide as a starting material or a iron oxide powder having pH of 8 to 14; admixing a water soluble silicate at a ratio of 0.1 to 10 mol % as SiO.sub.2 based on Fe; hydrothermally reacting said mixed slurry at 100.degree. to 250.degree. C. for 5 minutes or longer in a closed reactor, and washing, filtering and drying the product.

Abstract: The present amplifier has a pair of semiconductor amplifiers, and the input signal is divided to said amplifiers, the outputs of which are combined together by the power combiner. At least one of the power divider and the power combiner has a plurality of circulators which have three terminals. The characteristic impedance of one terminal is 2Z.sub.O and that of another terminals is Z.sub.O. Thus, by connecting the terminals of the characteristic impedance 2Z.sub.O of two circulators, the resultant characteristic impedance Z.sub.O is obtained and can be connected to an external circuit directly.The present amplifier can be utilized in particular in VHF or higher frequency band.

Abstract: A rubber or plastic magnet of high magnetic properties is produced by incorporating a magnetoplumbite type magnetic powder into a rubber or thermoplastic or thermosetting matrix at a high concentration with a high degree of orientation of the magnetic particles. Such high concentration and orientation can be obtained by using a magnetoplumbite type magnetic powder having a compressed density in the range between 3.30 g/cm.sup.3 and about 3.55 g/cm.sup.3 and an average particle size of about 1.00 and 1.50.mu., said particles being prepared by dry crushing process from coarse sintered particles and having predominantly single crystal structure.

Abstract: A displacement sensor which provides the output electrical signal proportional to the mechanical movement or displacement, without utilizing the mechanical friction. The present displacement sensor comprises of a cylindrical bobbin, a pair of solenoid coils provided on said bobbin with the predetermined spacing between each coils, the length of each of the solenoid coils being the same as that each other, a ferrite core adjustably inserted in said bobbin, a support connected to said ferrite core and an external device the displacement of which is to be sensed, a means for connecting the leads of said coils to external lead lines, and the length of said ferrite core being so defined that the total inductance of the series connected coils is independent from the position of said ferrite core in said bobbin.

Abstract: A magnetic recording medium having improved electromagnetic conversion characteristics and physical properties prepared by using a three-component binder consisting of a polyurethane resin, a phenoxy resin and a vinyl chloride-vinylidene chloride resin.

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a magnetic powder, a thermosettable binder and a mixture of sorbitane mono-, di- and tri- higher fatty acid ester surfactants.

Abstract: A novel non-linear resistance element or a varistor element is proposed which is a sintered body composed of a ternary oxide mixture comprising titanium dioxide as the base component, bismuth oxide and a third oxide component selected from the group consisting of oxides of tantalum, niobium and antimony admixed in limited proportions. The sintered body is prepared by subjecting the powder mixture obtained by admixing a solution containing tantalum, niobium or antimony with titanium dioxide and bismuth oxide to sintering following drying and calcination. The varistor element of the invention is stable in its performance and has a sufficiently high non-linearity index so that excellent noise suppressors are prepared with the varistor element to be useful in absorbing the noise voltages generated in various rotatory machines such as miniature motors.Further improvement in the above varistor element is proposed by adding a small amount of silicon dioxide to the ternary oxide mixtures.

Abstract: In a process for producing an iron oxide having magnetite as a main component by heating to reduce a powder of an oxide or a hydrated iron oxide comprising an iron oxide as a main component in an atmosphere for reduction, an improvement characterized in that said atmosphere for reduction is formed by passing an industrial liquefied nitrogen gas.