BR7406947D0 - Circuito de chaveamento sem reles - Google Patents

Circuito de chaveamento sem reles

Info

Publication number
BR7406947D0
BR7406947D0 BR6947/74A BR694774A BR7406947D0 BR 7406947 D0 BR7406947 D0 BR 7406947D0 BR 6947/74 A BR6947/74 A BR 6947/74A BR 694774 A BR694774 A BR 694774A BR 7406947 D0 BR7406947 D0 BR 7406947D0
Authority
BR
Brazil
Prior art keywords
relays
key circuit
key
circuit
Prior art date
Application number
BR6947/74A
Other languages
English (en)
Inventor
F Simokat
G Beene
L Baker
Original Assignee
Superior Continental Corp
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 Superior Continental Corp filed Critical Superior Continental Corp
Publication of BR7406947D0 publication Critical patent/BR7406947D0/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
BR6947/74A 1973-09-27 1974-08-22 Circuito de chaveamento sem reles BR7406947D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/401,418 US3941941A (en) 1973-09-27 1973-09-27 Relayless switching circuit for application of ringing signals

Publications (1)

Publication Number Publication Date
BR7406947D0 true BR7406947D0 (pt) 1975-07-29

Family

ID=23587669

Family Applications (1)

Application Number Title Priority Date Filing Date
BR6947/74A BR7406947D0 (pt) 1973-09-27 1974-08-22 Circuito de chaveamento sem reles

Country Status (5)

Country Link
US (1) US3941941A (pt)
BR (1) BR7406947D0 (pt)
CA (1) CA1006636A (pt)
FR (1) FR2246139A1 (pt)
GB (1) GB1475575A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245802A (en) * 1975-10-09 1977-04-11 Pioneer Electronic Corp Extension set atached to telephone circuit
US4015091A (en) * 1975-12-05 1977-03-29 Bell Telephone Laboratories, Incorporated Telephone ringing generators
EP0051446A1 (en) * 1980-10-28 1982-05-12 British Telecommunications Improvements in or relating to line interface circuits
US4991051A (en) * 1986-09-12 1991-02-05 Northern Telecom Limited Protection arrangements for communications lines
US6208670B1 (en) 1997-03-10 2001-03-27 Conklin Corporation Digital carrier system for rural telephone and data applications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145266A (en) * 1961-06-29 1964-08-18 Gen Electric A. c. static switching circuits
US3291916A (en) * 1963-08-23 1966-12-13 Stromberg Carlson Corp Signaling system
US3603740A (en) * 1969-08-18 1971-09-07 Northern Electric Co Method and means for ringing a telephone subset
US3688038A (en) * 1971-04-12 1972-08-29 Stromberg Carlson Corp Stored energy signalling circuit

Also Published As

Publication number Publication date
GB1475575A (en) 1977-06-01
CA1006636A (en) 1977-03-08
FR2246139A1 (pt) 1975-04-25
US3941941A (en) 1976-03-02

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