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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 |
An electromagnet type pickup device including a vibrating tubular member supporting a stylus-carrying cantilever and having a funnel-shaped engaging portion formed at one end, and including a tension wire having a bulging portion formed ...
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JPS5819919Y2 |
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JPS5819484Y2 |
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JPS5857196U |
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JPS5854199U |
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JPS5860900A |
An electro-acoustic transducer of novel structure suitable for automatic assembly is made by arranging with its wall upwards a generally cup-shaped rear cover 20 having a cylindrical wall out-turned at its upper end and extending from th...
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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 |
An improved telephone transducer composed of a magnetic driving sub-assembly coupled to a sub-assembly of driven armature, wherein said magnetic sub-assembly has a non-magnetic cup-shaped housing with a central cavity defined by a cylind...
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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 |
A pick-up and/or cutter (1) for scanning or recording information in a track of a disc-shaped record carrier, which pick-up comprises a stylus holder (2), which at one end carries a stylus (3), and which cooperates with two transducers, ...
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JPS5750400B2 |
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JPS5748159Y2 |
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JPS57153400U |
An electromagnetic transducer in which one end of a coil terminal is connected with a step portion of a magnetic core body made of soft magnetic material such as pure iron and the other end of which is connected with a step portion of a ...
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JPS57143796U |
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JPS57143999A |
A pick-up or cutter, whose magnetic circuit is at least partly hollow, the cavity (cavities) extending mainly in the direction of the magnetic lines of force and the magnetic circuit being formed at least partly with a slot (24, 25, 32) ...
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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 |
A cutterhead assembly suitable for forming a topographic signal representative pattern in a recording media, such as a disc substrate, is constructed having a base member, a piezoelectric element and a cutting stylus. The piezoelectric e...
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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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