SE363948B - - Google Patents
Info
- Publication number
- SE363948B SE363948B SE7303043A SE7303043A SE363948B SE 363948 B SE363948 B SE 363948B SE 7303043 A SE7303043 A SE 7303043A SE 7303043 A SE7303043 A SE 7303043A SE 363948 B SE363948 B SE 363948B
- Authority
- SE
- Sweden
Links
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
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
-
- 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)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7303043A SE363948B (fr) | 1973-03-05 | 1973-03-05 | |
FI511/74A FI56293C (fi) | 1973-03-05 | 1974-02-21 | Stroemmatningskrets till oscillator foer telefonapparater |
US444419A US3916114A (en) | 1973-03-05 | 1974-02-21 | Circuit in a subscriber's instrument for the feeding of an oscillator |
NL7402380A NL7402380A (fr) | 1973-03-05 | 1974-02-21 | |
DE19742408688 DE2408688C3 (de) | 1973-03-05 | 1974-02-22 | Schaltungsanordnung zum Versorgen eines an einer Teilnehmerstelle angeordneten Stimmfrequenzoszillators |
FR7406708A FR2220941B1 (fr) | 1973-03-05 | 1974-02-27 | |
AU66180/74A AU485284B2 (en) | 1973-03-05 | 1974-03-01 | Circuit ina subscribers instrument forthe feeding ofan oscillator |
CA193,861A CA993581A (en) | 1973-03-05 | 1974-03-01 | Circuit in a subscriber's instrument for the feeding of an oscillator |
DK114574AA DK138146B (da) | 1973-03-05 | 1974-03-04 | Strømforsyningskredsløb til oscillator til telefonapparater. |
CH298974A CH581931A5 (fr) | 1973-03-05 | 1974-03-04 | |
NO740746A NO132411C (fr) | 1973-03-05 | 1974-03-04 | |
GB991074A GB1447726A (en) | 1973-03-05 | 1974-03-05 | Circuit arrangement including a voice frequency oscillator belonging to a subsribers telephone instrumnet |
IT20560/74A IT1007412B (it) | 1973-03-05 | 1974-04-08 | Circuito di alimentazione di oscillatore in apparecchi di abbonato |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7303043A SE363948B (fr) | 1973-03-05 | 1973-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE363948B true SE363948B (fr) | 1974-02-04 |
Family
ID=20316803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7303043A SE363948B (fr) | 1973-03-05 | 1973-03-05 |
Country Status (11)
Country | Link |
---|---|
US (1) | US3916114A (fr) |
CA (1) | CA993581A (fr) |
CH (1) | CH581931A5 (fr) |
DK (1) | DK138146B (fr) |
FI (1) | FI56293C (fr) |
FR (1) | FR2220941B1 (fr) |
GB (1) | GB1447726A (fr) |
IT (1) | IT1007412B (fr) |
NL (1) | NL7402380A (fr) |
NO (1) | NO132411C (fr) |
SE (1) | SE363948B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4323792A (en) * | 1978-06-28 | 1982-04-06 | Bergmann Guenther | Two terminal circuitry for voltage limitation |
JPS601790B2 (ja) * | 1979-09-14 | 1985-01-17 | 岩崎通信機株式会社 | 押し釦ダイヤル回路 |
US4286120A (en) * | 1979-10-15 | 1981-08-25 | Gte Automatic Electric Labs Inc. | Current regulated pulse dialer circuit |
US4536614A (en) * | 1982-12-13 | 1985-08-20 | Gte Communication Systems Corporation | Supervision and dial pulse detection circuit for a telephone subscriber line |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3035122A (en) * | 1958-09-30 | 1962-05-15 | Gen Dynamics Corp | Constant current line circuitt for loop telephone lines |
FR2087469A5 (fr) * | 1970-05-20 | 1971-12-31 | Ericsson Telefon Ab L M | |
CA930488A (en) * | 1971-08-27 | 1973-07-17 | C. J. Cowpland Michael | Power supply |
-
1973
- 1973-03-05 SE SE7303043A patent/SE363948B/xx unknown
-
1974
- 1974-02-21 NL NL7402380A patent/NL7402380A/xx not_active Application Discontinuation
- 1974-02-21 FI FI511/74A patent/FI56293C/fi active
- 1974-02-21 US US444419A patent/US3916114A/en not_active Expired - Lifetime
- 1974-02-27 FR FR7406708A patent/FR2220941B1/fr not_active Expired
- 1974-03-01 CA CA193,861A patent/CA993581A/en not_active Expired
- 1974-03-04 DK DK114574AA patent/DK138146B/da unknown
- 1974-03-04 NO NO740746A patent/NO132411C/no unknown
- 1974-03-04 CH CH298974A patent/CH581931A5/xx not_active IP Right Cessation
- 1974-03-05 GB GB991074A patent/GB1447726A/en not_active Expired
- 1974-04-08 IT IT20560/74A patent/IT1007412B/it active
Also Published As
Publication number | Publication date |
---|---|
CA993581A (en) | 1976-07-20 |
CH581931A5 (fr) | 1976-11-15 |
DK138146C (fr) | 1978-12-18 |
FI56293C (fi) | 1979-12-10 |
FI56293B (fi) | 1979-08-31 |
DK138146B (da) | 1978-07-17 |
US3916114A (en) | 1975-10-28 |
GB1447726A (en) | 1976-08-25 |
AU6618074A (en) | 1975-09-04 |
FR2220941B1 (fr) | 1977-09-23 |
DE2408688B2 (de) | 1976-09-23 |
NO132411B (fr) | 1975-07-28 |
FR2220941A1 (fr) | 1974-10-04 |
NO132411C (fr) | 1975-11-05 |
IT1007412B (it) | 1976-10-30 |
NL7402380A (fr) | 1974-09-09 |
DE2408688A1 (de) | 1974-09-26 |