CH316979A - Elektrische Signalanlage - Google Patents

Elektrische Signalanlage

Info

Publication number
CH316979A
CH316979A CH316979DA CH316979A CH 316979 A CH316979 A CH 316979A CH 316979D A CH316979D A CH 316979DA CH 316979 A CH316979 A CH 316979A
Authority
CH
Switzerland
Prior art keywords
electric signal
signal system
electric
signal
Prior art date
Application number
Other languages
English (en)
Inventor
William Fritschi Walter
Otto Soffel Robert
Weaver Allan
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of CH316979A publication Critical patent/CH316979A/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
CH316979D 1952-05-01 1953-04-30 Elektrische Signalanlage CH316979A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US285354A US2642500A (en) 1952-05-01 1952-05-01 Voice frequency signaling circuit

Publications (1)

Publication Number Publication Date
CH316979A true CH316979A (de) 1956-10-31

Family

ID=23093870

Family Applications (1)

Application Number Title Priority Date Filing Date
CH316979D CH316979A (de) 1952-05-01 1953-04-30 Elektrische Signalanlage

Country Status (6)

Country Link
US (1) US2642500A (de)
BE (1) BE519608A (de)
CH (1) CH316979A (de)
FR (1) FR1072624A (de)
GB (1) GB729261A (de)
NL (1) NL100869C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957950A (en) * 1954-11-18 1960-10-25 Bell Telephone Labor Inc Transistor selective ringing circuit
US2814674A (en) * 1954-11-23 1957-11-26 Siemens Edison Swan Ltd Telephone trunk supervisory signalling system
BE565636A (de) * 1957-03-14

Also Published As

Publication number Publication date
GB729261A (en) 1955-05-04
US2642500A (en) 1953-06-16
NL100869C (de)
FR1072624A (fr) 1954-09-14
BE519608A (de)

Similar Documents

Publication Publication Date Title
CH320960A (de) Elektrische Steueranlage für Speicher- und Signalzwecke
FR1114700A (fr) Raccords électriques
FR1087955A (fr) Raccord électrique
FR1114488A (fr) Circuits électriques
CH316979A (de) Elektrische Signalanlage
CH319797A (de) Elektrische Signalanlage
NL182357B (nl) Elektrische schakelaar.
FR1079037A (fr) Plaque isolante
FR1088440A (fr) Interrupteurs électriques
CH330687A (de) Elektrische Identifizierungsanlage
FR1079067A (fr) Contacts électriques
FR1077346A (fr) Dégivreur
CH361029A (de) Elektrische Signalspeicheranlage
FR1082392A (fr) Dégivreur électrique
FR1090505A (fr) Palpeurs électriques
AT179506B (de) Elektrische Signalvorrichtung
AT177377B (de) Elektrische Hauptuhr
ES32328Y (es) Vehículo eléctrico
CH320599A (de) Selbstanschlussfernsprechanlage
ES32905Y (es) Estufa-brasero eléctrico
ES31771Y (es) Botella-calentador eléctrica
CH309009A (de) Elektrische Trennschalter.
AT178144B (de) Elektrische Verstärkerschalteinrichtung
ES29476Y (es) fusible-interruptor r eléctrico
AT180988B (de) Elektrisches Meßinstrument