FR700686A - Dispositif ferro-magnétique pour appareils permettant de transformer des oscillations électriques en oscillations acoustiques ou inversement
- Google Patents
Dispositif ferro-magnétique pour appareils permettant de transformer des oscillations électriques en oscillations acoustiques ou inversement
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Koninklijke Philips NV
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Philips Gloeilampenfabrieken NV
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H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
H04R11/00—Transducers of moving-armature or moving-core type
H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
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Physics & Mathematics
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Electromagnetism
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Engineering & Computer Science
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Acoustics & Sound
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Signal Processing
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Moving Of Heads
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Reciprocating, Oscillating Or Vibrating Motors
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FR700686D1929-09-191930-08-14Dispositif ferro-magnétique pour appareils permettant de transformer des oscillations électriques en oscillations acoustiques ou inversement
ExpiredFR700686A
(fr)
Organe de support et de centrage de la bobine d'un dispositif électrodynamique, permettant de transformer des oscillations électriques en oscillations acoustiques ou inversement