G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B3/00—Audible signalling systems; Audible personal calling systems
G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
G—PHYSICS
G10—MUSICAL INSTRUMENTS; ACOUSTICS
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
Landscapes
Physics & Mathematics
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Electromagnetism
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Engineering & Computer Science
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Acoustics & Sound
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Multimedia
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General Physics & Mathematics
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Lighting Device Outwards From Vehicle And Optical Signal
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Dispositif de sectionnement d'un circuit électrique et coffret de distribution d'énergie électrique comprenant un tel dispositif de sectionnement