ZA728265B - Improvements in or relating to battery charges - Google Patents
Improvements in or relating to battery chargesInfo
- Publication number
- ZA728265B ZA728265B ZA728265A ZA728265A ZA728265B ZA 728265 B ZA728265 B ZA 728265B ZA 728265 A ZA728265 A ZA 728265A ZA 728265 A ZA728265 A ZA 728265A ZA 728265 B ZA728265 B ZA 728265B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- battery charges
- charges
- battery
- Prior art date
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB144372 | 1972-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA728265B true ZA728265B (en) | 1973-07-25 |
Family
ID=9722099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA728265A ZA728265B (en) | 1972-01-12 | 1972-11-22 | Improvements in or relating to battery charges |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2300929A1 (xx) |
FR (1) | FR2167933B3 (xx) |
GB (1) | GB1350015A (xx) |
ZA (1) | ZA728265B (xx) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064366A (en) * | 1976-01-15 | 1977-12-20 | Winster Engineering Group Limited | Intrinsically safe telephone systems |
DE3344008C1 (de) * | 1983-12-06 | 1985-06-20 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Speisung von Einrichtungen eines Endgeräts einer Fernmeldevermittlungsanlage |
DE3531556A1 (de) * | 1985-09-04 | 1987-03-05 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung fuer einen fernsprechapparat mit einer digitaluhr |
DE3543797A1 (de) * | 1985-09-13 | 1987-03-26 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung zur leitungsspeisung von zusatzeinrichtungen eines fernsprechapparates |
DE3711897A1 (de) * | 1987-04-08 | 1988-10-20 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung fuer eine fernsprechteilnehmerstation mit einer lauthoer- bzw. freisprecheinrichtung |
DE19740334C2 (de) * | 1997-09-13 | 1999-09-30 | Deutsche Telekom Ag | Schaltungsanordnung zur Leitungsspeisung von Telekommunikationsendgeräten |
-
1972
- 1972-01-12 GB GB144372A patent/GB1350015A/en not_active Expired
- 1972-11-22 ZA ZA728265A patent/ZA728265B/xx unknown
-
1973
- 1973-01-09 DE DE2300929A patent/DE2300929A1/de active Pending
- 1973-01-11 FR FR7300840A patent/FR2167933B3/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1350015A (en) | 1974-04-18 |
FR2167933A1 (xx) | 1973-08-24 |
FR2167933B3 (xx) | 1976-01-09 |
DE2300929A1 (de) | 1973-07-19 |
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