DE90558C - - Google Patents
Info
- Publication number
- DE90558C DE90558C DENDAT90558D DE90558DA DE90558C DE 90558 C DE90558 C DE 90558C DE NDAT90558 D DENDAT90558 D DE NDAT90558D DE 90558D A DE90558D A DE 90558DA DE 90558 C DE90558 C DE 90558C
- Authority
- DE
- Germany
- Prior art keywords
- armature
- lever
- telephone
- record
- current
- 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
- 230000011664 signaling Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000012528 membrane Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE90558C true DE90558C (en:Method) |
Family
ID=362263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT90558D Active DE90558C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE90558C (en:Method) |
-
0
- DE DENDAT90558D patent/DE90558C/de active Active
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