SE424396B - Omkopplarkrets for en konferensforsterkare - Google Patents

Omkopplarkrets for en konferensforsterkare

Info

Publication number
SE424396B
SE424396B SE7614149A SE7614149A SE424396B SE 424396 B SE424396 B SE 424396B SE 7614149 A SE7614149 A SE 7614149A SE 7614149 A SE7614149 A SE 7614149A SE 424396 B SE424396 B SE 424396B
Authority
SE
Sweden
Prior art keywords
confirm
remote
conference amplifier
conference
amplifier
Prior art date
Application number
SE7614149A
Other languages
English (en)
Swedish (sv)
Other versions
SE7614149L (sv
Inventor
R A Jones
Original Assignee
Post Office
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 by Post Office filed Critical Post Office
Publication of SE7614149L publication Critical patent/SE7614149L/xx
Publication of SE424396B publication Critical patent/SE424396B/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)
SE7614149A 1975-12-17 1976-12-16 Omkopplarkrets for en konferensforsterkare SE424396B (sv)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
SE7614149L SE7614149L (sv) 1977-06-18
SE424396B true SE424396B (sv) 1982-07-12

Family

ID=10460615

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7614149A SE424396B (sv) 1975-12-17 1976-12-16 Omkopplarkrets for en konferensforsterkare

Country Status (5)

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

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
NL7613987A (nl) 1977-06-21
CA1064632A (fr) 1979-10-16
SE7614149L (sv) 1977-06-18
BE849549A (fr) 1977-04-15
FR2335999A1 (fr) 1977-07-15
FR2335999B1 (fr) 1982-07-09

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