SPEAKER BUILT-IN TYPE RECEIVER

PROBLEM TO BE SOLVED: To provide a speaker built-in type receiver which is easy of miniaturization and integration by enabling more effective control of impedance. SOLUTION: The speaker built-in type receiver includes a vibrating plate (23) for generating sound at a prescribed frequency which is cau...

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Bibliographische Detailangaben
Hauptverfasser:	MAN-DAE HAN, KIM BOK-BEUM
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a speaker built-in type receiver which is easy of miniaturization and integration by enabling more effective control of impedance. SOLUTION: The speaker built-in type receiver includes a vibrating plate (23) for generating sound at a prescribed frequency which is caused by vibration due to the respective sound pressures in the case of a speaker mode and in the case of a receiver mode, a voice coil (24, C) for vibrating the vibrating plate by a magnetic field of a magnet (21) which is attached to the vibrating plate and formed by an applied voice current, and a chip resistor (25, R) for reducing the applied voice current. In the case of the speaker mode, the voice current is applied to the voice coil from a speaker terminal. In the case of the receiver mode, the voice current is applied to the voice coil from a receiver terminal through the chip resistor. COPYRIGHT: (C)2003,JPO