DE279342C - - Google Patents
Info
- Publication number
- DE279342C DE279342C DENDAT279342D DE279342DA DE279342C DE 279342 C DE279342 C DE 279342C DE NDAT279342 D DENDAT279342 D DE NDAT279342D DE 279342D A DE279342D A DE 279342DA DE 279342 C DE279342 C DE 279342C
- Authority
- DE
- Germany
- Prior art keywords
- switch
- bell
- current
- electromagnetic
- battery
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE279342C true DE279342C (enrdf_load_html_response) |
Family
ID=535267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT279342D Active DE279342C (enrdf_load_html_response) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE279342C (enrdf_load_html_response) |
-
0
- DE DENDAT279342D patent/DE279342C/de active Active
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