GB513162A - Arrangements for switching over from normal to spare amplifiers in electrical signalling systems - Google Patents

Arrangements for switching over from normal to spare amplifiers in electrical signalling systems

Info

Publication number
GB513162A
GB513162A GB6844/38A GB684438A GB513162A GB 513162 A GB513162 A GB 513162A GB 6844/38 A GB6844/38 A GB 6844/38A GB 684438 A GB684438 A GB 684438A GB 513162 A GB513162 A GB 513162A
Authority
GB
United Kingdom
Prior art keywords
amplifier
relay
amplifiers
supply
relays
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
GB6844/38A
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 GB513162A publication Critical patent/GB513162A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/542—Replacing by standby devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Control Of Resistance Heating (AREA)
GB6844/38A 1938-03-04 1938-03-04 Arrangements for switching over from normal to spare amplifiers in electrical signalling systems Expired GB513162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40338X 1938-03-04

Publications (1)

Publication Number Publication Date
GB513162A true GB513162A (en) 1939-10-05

Family

ID=9769480

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6844/38A Expired GB513162A (en) 1938-03-04 1938-03-04 Arrangements for switching over from normal to spare amplifiers in electrical signalling systems

Country Status (4)

Country Link
BE (1) BE433041A (enrdf_load_stackoverflow)
CH (1) CH225074A (enrdf_load_stackoverflow)
FR (1) FR850910A (enrdf_load_stackoverflow)
GB (1) GB513162A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951508C (de) * 1953-01-15 1956-10-31 Felten & Guilleaume Carlswerk Einrichtung bei UEbertragungsanlagen mit mehreren unbemannten und ferngespeisten Verstaerkerstationen zur Umschaltung der Betriebsverstaerker auf Reserveverstaerker
US3582576A (en) * 1968-07-15 1971-06-01 Unisearch Ltd Triplate communications cable with built-in repeaters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039760B (de) * 1953-02-18 1958-09-25 Kinowerke Dresden Veb Anordnung zur Umschaltung von Tonfilmverstaerkereingaengen
DE1043399B (de) * 1953-08-21 1958-11-13 Zeiss Ikon Ag Aus mehreren Baugruppen bestehende Verstaerkereinrichtung, insbesondere fuer Tonfilmanlagen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951508C (de) * 1953-01-15 1956-10-31 Felten & Guilleaume Carlswerk Einrichtung bei UEbertragungsanlagen mit mehreren unbemannten und ferngespeisten Verstaerkerstationen zur Umschaltung der Betriebsverstaerker auf Reserveverstaerker
US3582576A (en) * 1968-07-15 1971-06-01 Unisearch Ltd Triplate communications cable with built-in repeaters

Also Published As

Publication number Publication date
FR850910A (fr) 1939-12-29
BE433041A (enrdf_load_stackoverflow)
CH225074A (de) 1942-12-31

Similar Documents

Publication Publication Date Title
US2162369A (en) Communication system
GB513162A (en) Arrangements for switching over from normal to spare amplifiers in electrical signalling systems
US2424069A (en) Voice operated switch for a duplex system
US2611808A (en) Relay control system
US2385515A (en) Intercommunication system
US2179652A (en) Telephone system
US1666154A (en) Distribution of programs over wires
US2145709A (en) Control circuit
US2128411A (en) Telephone system
US1555757A (en) Connection for vacuum tubes
US2376248A (en) Telegraph system
US1525054A (en) Power and amplifying equipment for distribution of intelligence over wires
US1079533A (en) Telephone switching system.
US3825698A (en) Test-through circuit for telephone system voltage boosters
US1298441A (en) Telephone system.
US1169320A (en) Telephone-exchange system.
US1107157A (en) Telephone-exchange system.
US2162372A (en) Communication system
US3237165A (en) Remote controlled office machine system
US1738247A (en) Current-controlling system
US1407604A (en) Repeater circuit
US1439772A (en) Signaling apparatus and circuits
GB1228117A (enrdf_load_stackoverflow)
US2943153A (en) Circuit arrangement for signalling switches of the relay type
US1392179A (en) Operator's trunk-circuit