BE447636A - - Google Patents

Info

Publication number
BE447636A
BE447636A BE447636DA BE447636A BE 447636 A BE447636 A BE 447636A BE 447636D A BE447636D A BE 447636DA BE 447636 A BE447636 A BE 447636A
Authority
BE
Belgium
Prior art keywords
control
tube
air gap
relay
anode
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE447636A publication Critical patent/BE447636A/fr

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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Particle Accelerators (AREA)
BE447636D BE447636A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE447636A true BE447636A (enrdf_load_stackoverflow)

Family

ID=103424

Family Applications (1)

Application Number Title Priority Date Filing Date
BE447636D BE447636A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE447636A (enrdf_load_stackoverflow)

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