FI61258C - Kopplingsanordning foer via sina anslutningsledningar matade abonnetstationer med pulsknappval vid telekommunikations- saerskilt telefonanlaeggningar - Google Patents
Kopplingsanordning foer via sina anslutningsledningar matade abonnetstationer med pulsknappval vid telekommunikations- saerskilt telefonanlaeggningar Download PDFInfo
- Publication number
- FI61258C FI61258C FI761473A FI761473A FI61258C FI 61258 C FI61258 C FI 61258C FI 761473 A FI761473 A FI 761473A FI 761473 A FI761473 A FI 761473A FI 61258 C FI61258 C FI 61258C
- Authority
- FI
- Finland
- Prior art keywords
- switch
- capacitor
- pulse
- series
- generating circuit
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 30
- 239000004065 semiconductor Substances 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000001052 transient effect Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 244000089409 Erythrina poeppigiana Species 0.000 description 1
- 235000009776 Rathbunia alamosensis Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
- H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2523478 | 1975-05-27 | ||
| DE2523478A DE2523478C3 (de) | 1975-05-27 | 1975-05-27 | Schaltungsanordnung für über ihre Anschlußleitungen gespeiste Teilnehmerstationen mitlmpulstasrwahl in Fernmelde-, insbesondere Fernsprechanlagen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI761473A7 FI761473A7 (it) | 1976-11-28 |
| FI61258B FI61258B (fi) | 1982-02-26 |
| FI61258C true FI61258C (fi) | 1982-06-10 |
Family
ID=5947553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI761473A FI61258C (fi) | 1975-05-27 | 1976-05-25 | Kopplingsanordning foer via sina anslutningsledningar matade abonnetstationer med pulsknappval vid telekommunikations- saerskilt telefonanlaeggningar |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2523478C3 (it) |
| FI (1) | FI61258C (it) |
| IT (1) | IT1060643B (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2722859C2 (de) * | 1977-05-20 | 1985-06-20 | Friedrich Merk-Telefonbau GmbH, 8000 München | Schaltungsanordnung für Teilnehmerstationen in Fernmelde-, insbesondere Fernsprechanlagen mit einem tastengesteuerten Wählimpulsgeber |
-
1975
- 1975-05-27 DE DE2523478A patent/DE2523478C3/de not_active Expired
-
1976
- 1976-05-20 IT IT23439/76A patent/IT1060643B/it active
- 1976-05-25 FI FI761473A patent/FI61258C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2523478C3 (de) | 1978-06-22 |
| IT1060643B (it) | 1982-08-20 |
| FI761473A7 (it) | 1976-11-28 |
| DE2523478A1 (de) | 1976-12-02 |
| DE2523478B2 (de) | 1977-11-03 |
| FI61258B (fi) | 1982-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |
Owner name: SIEMENS AKTIENGESELLSCHAFT |