AU3995585A - Schaltungsanordnung zur elektrischen speisung von einrichtun gen in einem fernsprechapparat - Google Patents
Schaltungsanordnung zur elektrischen speisung von einrichtun gen in einem fernsprechapparatInfo
- Publication number
- AU3995585A AU3995585A AU39955/85A AU3995585A AU3995585A AU 3995585 A AU3995585 A AU 3995585A AU 39955/85 A AU39955/85 A AU 39955/85A AU 3995585 A AU3995585 A AU 3995585A AU 3995585 A AU3995585 A AU 3995585A
- Authority
- AU
- Australia
- Prior art keywords
- power
- fernsprechapparat
- einrichtun
- einem
- gen
- 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.)
- Abandoned
Links
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Direct Current Feeding And Distribution (AREA)
- Insulated Conductors (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Heat Treatment Of Steel (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
Circuit arrangement for the electric supply of devices in a telephone set enabling to supply the devices with an optimum power. To this effect, there is provided at the input of the telephone set a transverse member (35) with an ohmic resistance characteristics which regulates for all loop currents the admissible maximum input voltage so that it is always possible to draw the maximum power. A priority network (36) connected downstream of the transverse member distributes said power to the different consumers, the currents which are not necessary for a consumer being distributed to the consumer having the next lowest priority. A lower priority output with inherent current limitation supplies a sound hearing or free speaking final stage (38, 39), so that said final stage has always at disposal the maximum excess power.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3404335 | 1984-02-08 | ||
DE19843404335 DE3404335C2 (en) | 1983-04-27 | 1984-02-08 | Circuit arrangement for line feeding of additional devices of a telephone set |
DE3429330 | 1984-08-09 | ||
DE19843429330 DE3429330C2 (en) | 1984-08-09 | 1984-08-09 | Circuit arrangement for feeding a subscriber station |
Publications (1)
Publication Number | Publication Date |
---|---|
AU3995585A true AU3995585A (en) | 1985-08-27 |
Family
ID=25818282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU39955/85A Abandoned AU3995585A (en) | 1984-02-08 | 1985-02-07 | Schaltungsanordnung zur elektrischen speisung von einrichtun gen in einem fernsprechapparat |
Country Status (7)
Country | Link |
---|---|
EP (2) | EP0174942B1 (en) |
AT (1) | ATE51989T1 (en) |
AU (1) | AU3995585A (en) |
DK (1) | DK456785A (en) |
FI (1) | FI81230C (en) |
NO (1) | NO167178C (en) |
WO (1) | WO1985003614A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3531557A1 (en) * | 1985-09-04 | 1987-03-05 | Telefonbau & Normalzeit Gmbh | CIRCUIT ARRANGEMENT FOR A TELEPHONE SUBSCRIBER STATION |
DE3613825A1 (en) * | 1986-04-24 | 1987-10-29 | Telefonbau & Normalzeit Gmbh | CIRCUIT ARRANGEMENT FOR A TELEPHONE WITH IMPULSE SELECTION |
FR2601538A1 (en) * | 1986-07-09 | 1988-01-15 | Radiotechnique Compelec | Telephone set, several electronic functions of which are powered by the line current and especially the function for amplified listening through loudspeaker |
FR2627339B1 (en) * | 1988-02-11 | 1994-05-20 | Matra Communication | INTEGRATED CIRCUIT AND TELEPHONE TELEPHONE APPARATUS WITH APPLICATION |
CA1313432C (en) * | 1989-07-06 | 1993-02-02 | Terence Neil Thomas | Speaker drive arrangement for loudspeaker telephone |
FR2686757B1 (en) * | 1992-01-29 | 1997-03-28 | Sgs Thomson Microelectronics | CURRENT MODULATOR OF A TELEPHONE LINE. |
DE19959488A1 (en) * | 1999-12-10 | 2001-06-13 | Alcatel Sa | Circuit for limiting input impedance of a/b telecommunications interface sets upper and lower input impedance limits depending on amplitude of terminal loop current |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2043611A1 (en) * | 1970-09-03 | 1972-03-09 | Tn | Charging circuit for capacitors at the end of a line carrying only low power in telecommunications systems |
FR2282198A1 (en) * | 1974-08-12 | 1976-03-12 | Trt Telecom Radio Electr | Keyboard telephone for long lines - uses speech loop current to power MOS circuit |
DE2840250C2 (en) * | 1978-09-15 | 1983-01-20 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for a line-fed loudspeaker station |
GB2064268B (en) * | 1979-09-17 | 1983-10-26 | Philips Nv | Electronic signalling device for connection to a signal transmission line |
DE3206564A1 (en) * | 1982-02-24 | 1983-09-01 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circuit arrangement for the electrical amplification of telecommunications signals, in particular for microphone capsule signals of a telephone set |
GB2120498B (en) * | 1982-04-29 | 1985-11-20 | Motorola Inc | Regulator circuit |
US4488006A (en) * | 1982-07-01 | 1984-12-11 | At&T Bell Laboratories | Apparatus for controlling the application of telephone line power in a telephone set |
DE3347765A1 (en) * | 1983-04-27 | 1984-10-31 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for line feed of ancillary devices of a telephone set |
DE3404335C2 (en) * | 1983-04-27 | 1985-08-22 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for line feeding of additional devices of a telephone set |
-
1985
- 1985-02-07 EP EP85901002A patent/EP0174942B1/en not_active Expired - Lifetime
- 1985-02-07 WO PCT/EP1985/000034 patent/WO1985003614A1/en active IP Right Grant
- 1985-02-07 EP EP85200471A patent/EP0169584A1/en active Pending
- 1985-02-07 AU AU39955/85A patent/AU3995585A/en not_active Abandoned
- 1985-02-07 AT AT85901002T patent/ATE51989T1/en active
- 1985-10-07 DK DK456785A patent/DK456785A/en not_active Application Discontinuation
- 1985-10-07 FI FI853894A patent/FI81230C/en not_active IP Right Cessation
- 1985-10-07 NO NO85853954A patent/NO167178C/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0174942B1 (en) | 1990-04-11 |
DK456785D0 (en) | 1985-10-07 |
EP0169584A1 (en) | 1986-01-29 |
ATE51989T1 (en) | 1990-04-15 |
NO853954L (en) | 1985-10-07 |
FI81230B (en) | 1990-05-31 |
EP0174942A1 (en) | 1986-03-26 |
FI853894A0 (en) | 1985-10-07 |
NO167178B (en) | 1991-07-01 |
NO167178C (en) | 1991-10-09 |
FI853894L (en) | 1985-10-07 |
DK456785A (en) | 1985-10-07 |
FI81230C (en) | 1990-09-10 |
WO1985003614A1 (en) | 1985-08-15 |
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