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GB1350015A - Battery chargers - Google Patents

Battery chargers

Info

Publication number
GB1350015A
GB1350015A GB144372A GB1350015DA GB1350015A GB 1350015 A GB1350015 A GB 1350015A GB 144372 A GB144372 A GB 144372A GB 1350015D A GB1350015D A GB 1350015DA GB 1350015 A GB1350015 A GB 1350015A
Authority
GB
United Kingdom
Prior art keywords
transistor
hook
transistors
instrument
battery
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.)
Expired
Application number
GB144372A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1350015A publication Critical patent/GB1350015A/en
Expired legal-status Critical Current

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)
GB144372A 1972-01-12 1972-01-12 Battery chargers Expired GB1350015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB144372 1972-01-12

Publications (1)

Publication Number Publication Date
GB1350015A true GB1350015A (en) 1974-04-18

Family

ID=9722099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB144372A Expired GB1350015A (en) 1972-01-12 1972-01-12 Battery chargers

Country Status (4)

Country Link
DE (1) DE2300929A1 (de)
FR (1) FR2167933B3 (de)
GB (1) GB1350015A (de)
ZA (1) ZA728265B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064366A (en) * 1976-01-15 1977-12-20 Winster Engineering Group Limited Intrinsically safe telephone systems

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064366A (en) * 1976-01-15 1977-12-20 Winster Engineering Group Limited Intrinsically safe telephone systems

Also Published As

Publication number Publication date
ZA728265B (en) 1973-07-25
DE2300929A1 (de) 1973-07-19
FR2167933A1 (de) 1973-08-24
FR2167933B3 (de) 1976-01-09

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee