ES179909A1 - IMPROVEMENTS IN ELECTRICAL CONTROL SYSTEMS - Google Patents

IMPROVEMENTS IN ELECTRICAL CONTROL SYSTEMS

Info

Publication number
ES179909A1
ES179909A1 ES0179909A ES179909A ES179909A1 ES 179909 A1 ES179909 A1 ES 179909A1 ES 0179909 A ES0179909 A ES 0179909A ES 179909 A ES179909 A ES 179909A ES 179909 A1 ES179909 A1 ES 179909A1
Authority
ES
Spain
Prior art keywords
potential
control systems
electrical control
test device
source
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
ES0179909A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES179909A1 publication Critical patent/ES179909A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

Mejoras en sistemas eléctricos de control caracterizado por una disposición de circuito para elegir automáticamente un primer potencial que iguale a un segundo potencial determinado que comprende un dispositivo de prueba adaptado para aplicar primeros potenciales diferentes sucesivamente a los electrodos de entrada de un dispostivo sensible caracterizado a su vez por el hecho de que el dispositivo sensible es de un tipo sustancialmente incapaz de ser excitado cuando la tensión aplicada a sus electrodos de entrada es de una polaridad predeterminada y de que un mecanismo conmutador sensible a una diferencia entre el primer potencial y el segundo potencial está conectado entre el dispositivo de prueba y la fuente del segundo potencial estando dispuesto el referido mecanismo para conectar el dispositivo sensible al dispositivo de prueba y a la referida fuente con una polaridad tal como para que los potenciales diferentes no exciten al dispositivo sensible.Improvements in electrical control systems characterized by a circuit arrangement for automatically choosing a first potential that equals a determined second potential comprising a test device adapted to apply different first potentials successively to the input electrodes of a sensitive device characterized by its time by the fact that the sensing device is of a type substantially incapable of being energized when the voltage applied to its input electrodes is of a predetermined polarity and that a switching mechanism responsive to a difference between the first potential and the second potential it is connected between the test device and the source of the second potential, said mechanism being arranged to connect the sensitive device to the test device and to said source with a polarity such that the different potentials do not excite the sensitive device.

ES0179909A 1945-07-07 1947-09-27 IMPROVEMENTS IN ELECTRICAL CONTROL SYSTEMS Expired ES179909A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US603640A US2492135A (en) 1945-07-07 1945-07-07 Potential matching electrical control system

Publications (1)

Publication Number Publication Date
ES179909A1 true ES179909A1 (en) 1947-11-01

Family

ID=24416308

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0179909A Expired ES179909A1 (en) 1945-07-07 1947-09-27 IMPROVEMENTS IN ELECTRICAL CONTROL SYSTEMS

Country Status (2)

Country Link
US (1) US2492135A (en)
ES (1) ES179909A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1855380A (en) * 1930-07-29 1932-04-26 Western Union Telegraph Co Corrector circuit for synchronous telegraph systems
FR737991A (en) * 1931-06-08 1932-12-17
GB393359A (en) * 1932-02-03 1933-06-08 Ernest Harris Jolley Improvements in electric telegraph and like systems
US2237413A (en) * 1939-04-04 1941-04-08 Bell Telephone Labor Inc Telephone system
US2242776A (en) * 1939-04-25 1941-05-20 Bell Telephone Labor Inc Telephone system
US2245160A (en) * 1939-07-07 1941-06-10 Bell Telephone Labor Inc Telephone system
US2380950A (en) * 1943-04-23 1945-08-07 Int Standard Electric Corp Telecommunication system
NL69491C (en) * 1943-05-06
US2354668A (en) * 1943-05-06 1944-08-01 Int Standard Electric Corp Electric selection controlling circuit

Also Published As

Publication number Publication date
US2492135A (en) 1949-12-27

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