BE849549A - Circuit de commutation - Google Patents

Circuit de commutation

Info

Publication number
BE849549A
BE849549A BE173391A BE173391A BE849549A BE 849549 A BE849549 A BE 849549A BE 173391 A BE173391 A BE 173391A BE 173391 A BE173391 A BE 173391A BE 849549 A BE849549 A BE 849549A
Authority
BE
Belgium
Prior art keywords
switching circuit
switching
circuit
Prior art date
Application number
BE173391A
Other languages
English (en)
French (fr)
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
Priority claimed from GB51587/75A external-priority patent/GB1565200A/en
Application filed filed Critical
Publication of BE849549A publication Critical patent/BE849549A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Interface Circuits In Exchanges (AREA)
BE173391A 1975-12-17 1976-12-17 Circuit de commutation BE849549A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB51587/75A GB1565200A (en) 1976-01-06 1975-12-17 Switching circuit

Publications (1)

Publication Number Publication Date
BE849549A true BE849549A (fr) 1977-04-15

Family

ID=10460615

Family Applications (1)

Application Number Title Priority Date Filing Date
BE173391A BE849549A (fr) 1975-12-17 1976-12-17 Circuit de commutation

Country Status (5)

Country Link
BE (1) BE849549A (enrdf_load_stackoverflow)
CA (1) CA1064632A (enrdf_load_stackoverflow)
FR (1) FR2335999A1 (enrdf_load_stackoverflow)
NL (1) NL7613987A (enrdf_load_stackoverflow)
SE (1) SE424396B (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502905A (en) * 1967-05-17 1970-03-24 Honeywell Inc Differential amplifier and field effect transistor gates for applying largest of two inputs to output
GB1395495A (en) * 1971-06-30 1975-05-29 Post Office Telephone conference amplifier

Also Published As

Publication number Publication date
FR2335999B1 (enrdf_load_stackoverflow) 1982-07-09
FR2335999A1 (fr) 1977-07-15
SE7614149L (sv) 1977-06-18
NL7613987A (nl) 1977-06-21
SE424396B (sv) 1982-07-12
CA1064632A (en) 1979-10-16

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: POST OFFICE

Effective date: 19841217