DE221304C - - Google Patents
Info
- Publication number
- DE221304C DE221304C DENDAT221304D DE221304DA DE221304C DE 221304 C DE221304 C DE 221304C DE NDAT221304 D DENDAT221304 D DE NDAT221304D DE 221304D A DE221304D A DE 221304DA DE 221304 C DE221304 C DE 221304C
- Authority
- DE
- Germany
- Prior art keywords
- armature
- current
- buzzer
- switch
- pole changer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
Classifications
-
- 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
- G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
- G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
- G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
- G10K1/063—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a bell
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE221304C true DE221304C (enrdf_load_stackoverflow) |
Family
ID=482291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT221304D Active DE221304C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE221304C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT221304D patent/DE221304C/de active Active
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