DE300101C - - Google Patents
Info
- Publication number
- DE300101C DE300101C DENDAT300101D DE300101DA DE300101C DE 300101 C DE300101 C DE 300101C DE NDAT300101 D DENDAT300101 D DE NDAT300101D DE 300101D A DE300101D A DE 300101DA DE 300101 C DE300101 C DE 300101C
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- buzzer
- signal
- circuit
- magnet
- 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
- 239000012528 membrane Substances 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000881 depressing effect Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Push-Button Switches (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE300101C true DE300101C (enExample) |
Family
ID=554122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT300101D Active DE300101C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE300101C (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798383A (en) * | 1971-02-05 | 1974-03-19 | Brandstatter G | Ringing device for an electrical telephone |
-
0
- DE DENDAT300101D patent/DE300101C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798383A (en) * | 1971-02-05 | 1974-03-19 | Brandstatter G | Ringing device for an electrical telephone |
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