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JPS5854199U |
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JPS5860900A |
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JPS5859699A |
PURPOSE: To realize a low resonance frequency and a high efficiency, by reducing the diameter without damaging the elasticity of the diaphragm and holding the magnetic coupling strong. CONSTITUTION: An electromagnetic electroacoustic tra...
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JPS5816399B2 |
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JPS5811158B2 |
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JPS5829299A |
PURPOSE: To elevate power generation efficiency, to suppress deterioration of a characteristic due to a variation of stylus pressure, and also to make a magnet and a vibration system light in weight, by placing a pair of magnets, and yok...
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JPS5829298A |
PURPOSE: To make a magnet and a vibration system light in weight, by placing yokes so as to place a plate-like armature of a cantilever rear end part between them and placing an inverted U-type magnet so as to step over the cantilever, b...
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JPS585276Y2 |
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JPS584319Y2 |
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JPS582518B2 |
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JPS586700A |
PURPOSE: To reduce unevenness of sound pressure aproximately at a resonance point and to decrease a distortion factor, by using a printed substrate as the 1st diaphragm, sticking the circumference to a resonator by ultrasonic-wave weldin...
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JPS581021Y2 |
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JPS57202297U |
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JPS57202298U |
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JPS5754392Y2 |
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JPS57180299A |
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JPS5750400B2 |
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JPS5748159Y2 |
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JPS57153400U |
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JPS57152973U |
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JPS57151099U |
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JPS57146499U |
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JPS57143796U |
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JPS57143999A |
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JPS57129600A |
PURPOSE: To reduce the effective mass and to realize a flat and wide range of the frequency characteristics, by constituting an armature with an amorphous metal. CONSTITUTION: The yokes 12 and 13 are attached across a magnet 11. A cantil...
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JPS5737159B2 |
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JPS57126125A |
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JPS57125100U |
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JPS5734960B2 |
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JPS57119599A |
PURPOSE: To flatten frequency characteristics by inducing a voltage across an air-core coil directly by the variation of magnetic flux of an armature, thus eliminating harmful magnetic strain, and realizing flat transmission characterist...
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JPS57119996U |
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JPS57109499A |
PURPOSE: To output not only a monotonic sound of constant by frequency being present at 2∼5kHz but also a voice, etc. by high acoustic pressure, by use of a small-sized electromagnetic loudspeaker incorporated in an electronic timepiec...
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JPS5731840B2 |
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JPS5729438Y2 |
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JPS57101499A |
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JPS5728477Y2 |
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JPS5728240B2 |
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JPS5723994Y2 |
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JPS5723992Y2 |
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JPS5723995Y2 |
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JPS5721918B2 |
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JPS5769998A |
PURPOSE: To achieve a pickup cartridge with good signal separation wihtout cross talk, by oscillating a pair of independent armatures corresponding to each speed amplitude of two modulation walls of a record disc in independent magnetic ...
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JPS5754500A |
PURPOSE: To form a small sized speaker operated in few mW, by improving the acoustic effect of a small sized vibration diaphragm, through the introduction of butterfly oscillation in place of piston oscillation. CONSTITUTION: A permanent...
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JPS5712359B2 |
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JPS5738100A |
PURPOSE: Tp improve the performance of assembly and to reduce the production of mechanical strain, by using a laminated yoke which is formed by folding and piling continuous plate members formed with one thin plate member. CONSTITUTION: ...
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JPS5710159Y2 |
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JPS5733899A |
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JPS5733900A |
PURPOSE: To obtain a pickup cartridge having high efficiency, by mechanizing all the processes as a plane operation by a continuous assembling work, supplying the respective parts uniformly, and reducing the variations of its performance...
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JPS579560B2 |
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JPS5726987A |
PURPOSE: To make stable the coupling state between an ear plug and an ear shell, by extending the ear plug to a direction with a slope to the oscillating direction of a diaphragm plate. CONSTITUTION: A diaphragm plate 1 is oscillated bas...
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