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JPS58127796U |
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JPS58143697A |
PURPOSE: To give the resistance to a high input to a microphone and make the microphone light-weight, by attaching a magnet to a diaphragm so that the direction of the magnetic pole is at right angles to the diaphragm and arranging a rin...
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JPS58120990U |
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JPS58138199A |
PURPOSE: To improve resisting properties against high input and high temperature of an electromagnetic loudspeaker and easily produce the loudspeaker, by fitting a magnet so that the direction of the magnetic pole becomes normal to the d...
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JPS58136200A |
PURPOSE: To obtain a diaphragm satisfying the stable resonance frequency and storing sound pressure, by forming the diaphragm with a diaphragm body and a movable iron piece not fixed but placed on the diaphragm body. CONSTITUTION: Since ...
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JPS58127500A |
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JPS5832398Y2 |
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JPS5830379Y2 |
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JPS5830798B2 |
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JPS5830799B2 |
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JPS58106998A |
PURPOSE: To improve the assembling workability and check the stiffness of a diaphragm unit, by separating the diaphragm unit and a driving plate unit from each other and giving structures to these units so that these units are assembled ...
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JPS58106999A |
PURPOSE: To make always the gap length between an armature and a yoke constant to stabilize the capacity, by piling up magnets and yokes on a supporting part of a member provided with the armature to constitute a yoke part. CONSTITUTION:...
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JPS58105697A |
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JPS58104597A |
PURPOSE: To attain small size and high sensitivity, by forming a side plate of a magnetic circuit constituted around a canti-lever type armature 8 vertical to the armature and driving the vicinity of a diaphragm via a drive pin. CONSTITU...
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JPS5899098A |
PURPOSE: To prevent the lowering in the sensitivity of an electromagnetic acoustic converter of a small size used for a hearing aid, by forming an auxiliary magnetic circuit comprising a frame and a case for an outer circumference of a m...
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JPS5899099A |
PURPOSE: To fix a frame and a diaphragm film, and the diaphragm film and a diaphragm respectively at the same time, by contacting a resin film on the upper surface of the heated film and the diaphragm, thermally melting the resin film on...
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JPS5881707U |
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JPS5824555Y2 |
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JPS5824552Y2 |
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JPS5824556Y2 |
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JPS5824557Y2 |
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JPS5824558Y2 |
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JPS5875999A |
PURPOSE: To make the winding material of a coil thick by providing two small magnets held at a specified interval having such polarity that they repel each other with a coil for generating a magnetic field in their common axial direction...
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JPS5821267Y2 |
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JPS5821324B2 |
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JPS5819919Y2 |
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JPS5868399A |
PURPOSE: To transduce electric energy into motional energy efficiently by fixing a cantilever driving coil to a magnetic yield yoke in a VHD signal pickup device for information disks. CONSTITUTION: Cantilever driving coils 8a, 8b, and 9...
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JPS5819484Y2 |
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JPS5857196U |
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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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