BE457455A - - Google Patents

Info

Publication number
BE457455A
BE457455A BE457455DA BE457455A BE 457455 A BE457455 A BE 457455A BE 457455D A BE457455D A BE 457455DA BE 457455 A BE457455 A BE 457455A
Authority
BE
Belgium
Prior art keywords
winding
current
transformer
relay
contact
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE457455A publication Critical patent/BE457455A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/02Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
BE457455D BE457455A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE457455A true BE457455A (enrdf_load_html_response)

Family

ID=110922

Family Applications (1)

Application Number Title Priority Date Filing Date
BE457455D BE457455A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE457455A (enrdf_load_html_response)

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