HK5878A - Improvements in or relating to power supply circuits - Google Patents
Improvements in or relating to power supply circuitsInfo
- Publication number
- HK5878A HK5878A HK58/78A HK5878A HK5878A HK 5878 A HK5878 A HK 5878A HK 58/78 A HK58/78 A HK 58/78A HK 5878 A HK5878 A HK 5878A HK 5878 A HK5878 A HK 5878A
- Authority
- HK
- Hong Kong
- Prior art keywords
- relating
- power supply
- supply circuits
- circuits
- power
- Prior art date
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
- H04M1/31—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)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3357074A GB1472442A (en) | 1974-07-30 | 1974-07-30 | Power supply circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK5878A true HK5878A (en) | 1978-02-03 |
Family
ID=10354661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK58/78A HK5878A (en) | 1974-07-30 | 1978-01-26 | Improvements in or relating to power supply circuits |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE831828A (en) |
| FR (1) | FR2281019A1 (en) |
| GB (1) | GB1472442A (en) |
| HK (1) | HK5878A (en) |
| IE (1) | IE41644B1 (en) |
| IT (1) | IT1039852B (en) |
| NZ (1) | NZ178241A (en) |
| ZA (1) | ZA754856B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2931464C2 (en) * | 1979-08-02 | 1981-10-08 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for connecting a transmission device of a modem to a telephone line |
| DE2931456C2 (en) * | 1979-08-02 | 1982-10-28 | Siemens AG, 1000 Berlin und 8000 München | Parallel control circuit |
-
1974
- 1974-07-30 GB GB3357074A patent/GB1472442A/en not_active Expired
-
1975
- 1975-07-15 IT IT25407/75A patent/IT1039852B/en active
- 1975-07-28 FR FR7523462A patent/FR2281019A1/en active Granted
- 1975-07-29 IE IE1702/75A patent/IE41644B1/en unknown
- 1975-07-29 ZA ZA00754856A patent/ZA754856B/en unknown
- 1975-07-29 BE BE2054481A patent/BE831828A/en unknown
- 1975-07-29 NZ NZ178241A patent/NZ178241A/en unknown
-
1978
- 1978-01-26 HK HK58/78A patent/HK5878A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA754856B (en) | 1976-09-29 |
| IT1039852B (en) | 1979-12-10 |
| GB1472442A (en) | 1977-05-04 |
| IE41644B1 (en) | 1980-02-27 |
| FR2281019A1 (en) | 1976-02-27 |
| FR2281019B3 (en) | 1979-04-27 |
| BE831828A (en) | 1976-01-29 |
| IE41644L (en) | 1976-01-30 |
| NZ178241A (en) | 1978-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ZA776214B (en) | Improvements in or relating to electrical power supply circuits | |
| ZA762154B (en) | Improvements in or relating to thermo-electric generators | |
| HK13179A (en) | Improvements in or relating to electric torches | |
| ZA707370B (en) | Improvements in or relating to a supply circuit for a direct current motor | |
| AU8617775A (en) | Power supply unit | |
| HK6581A (en) | Improvements in or relating to screwdrivers | |
| MY7700324A (en) | Improvements in or relating to bearings | |
| ZA755973B (en) | Improvements in or relating to power supply circuit arrangements | |
| MY7900013A (en) | Improvements in or relating to radiology | |
| HK49778A (en) | Improvements in or relating to solid-state electronic timepieces | |
| ZA752089B (en) | Improvements in or relating to mixing devices | |
| ZA752786B (en) | Improvements in or relating to power producing units | |
| MY7900015A (en) | Improvements in or relating to radiology | |
| ZA751258B (en) | Improvements in or relating to atomisers | |
| ZA754741B (en) | Improvements in or relating to electrical transformers | |
| HK35281A (en) | Improvements in or relating to semiconductor devices | |
| ZA751884B (en) | Improvements in or relating to tennis-rackets | |
| ZA75813B (en) | Improvements in or relating to primary cells | |
| HK5778A (en) | Improvements in or relating to relay circuits | |
| ZA751880B (en) | Improvements in or relating to electrical connections | |
| ZA757254B (en) | Improvements in or relating to positioning means | |
| ZA754927B (en) | Improvements in or relating to electrical power supply circuits | |
| ZA754856B (en) | Improvements in or relating to power supply circuits | |
| ZA756198B (en) | Improvements in or relating to an applicator means | |
| IL47913A0 (en) | Power supply circuit arrangement |