IT956858B - Impianto di ritrasmissione di pro tezione a portante modulata a spo stamento di frequenza con comuni cazione a frequenza vocale modula ta in ampiezza - Google Patents

Impianto di ritrasmissione di pro tezione a portante modulata a spo stamento di frequenza con comuni cazione a frequenza vocale modula ta in ampiezza

Info

Publication number
IT956858B
IT956858B IT26256/72A IT2625672A IT956858B IT 956858 B IT956858 B IT 956858B IT 26256/72 A IT26256/72 A IT 26256/72A IT 2625672 A IT2625672 A IT 2625672A IT 956858 B IT956858 B IT 956858B
Authority
IT
Italy
Prior art keywords
modulated
frequency
spo
cation
stage
Prior art date
Application number
IT26256/72A
Other languages
English (en)
Italian (it)
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of IT956858B publication Critical patent/IT956858B/it

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Selective Calling Equipment (AREA)
  • Radio Relay Systems (AREA)
IT26256/72A 1971-06-29 1972-06-27 Impianto di ritrasmissione di pro tezione a portante modulata a spo stamento di frequenza con comuni cazione a frequenza vocale modula ta in ampiezza IT956858B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15788071A 1971-06-29 1971-06-29

Publications (1)

Publication Number Publication Date
IT956858B true IT956858B (it) 1973-10-10

Family

ID=22565675

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26256/72A IT956858B (it) 1971-06-29 1972-06-27 Impianto di ritrasmissione di pro tezione a portante modulata a spo stamento di frequenza con comuni cazione a frequenza vocale modula ta in ampiezza

Country Status (6)

Country Link
US (1) US3707651A (enExample)
ES (1) ES404296A1 (enExample)
FR (1) FR2143825B1 (enExample)
GB (1) GB1404823A (enExample)
IT (1) IT956858B (enExample)
SE (1) SE384308B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114077A (en) * 1977-04-01 1978-09-12 Westinghouse Electric Corp. Rotor overtemperature protection for electric motors
CH642208A5 (fr) * 1981-03-16 1984-03-30 Sss 3 Sa Geneve Installation de signalisation electrique comprenant au moins un emetteur et un recepteur.
US4591940A (en) * 1982-07-13 1986-05-27 Westinghouse Electric Corp. Signal quality monitor for protective relay system
US5426554A (en) * 1991-03-19 1995-06-20 Albert Nocentino, Jr. Audio bandwidth interface apparatus for pilot wire relays
US5592354A (en) * 1991-03-19 1997-01-07 Nocentino, Jr.; Albert Audio bandwidth interface apparatus for pilot wire relays
DE10032422C1 (de) * 2000-07-04 2002-01-10 Siemens Ag Verfahren und Vorrichtung zur Sicherung einer Übertragungsstrecke zwischen einer Basiseinheit und einer mobilen Schlüsseleinheit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040130A (en) * 1958-12-24 1962-06-19 Itt Repeater station for a bidirectional communication system
US3470418A (en) * 1967-06-06 1969-09-30 Westinghouse Electric Corp Phase comparison relaying network
US3590324A (en) * 1969-06-27 1971-06-29 Westinghouse Electric Corp Phase comparison relaying network
US3602776A (en) * 1970-04-29 1971-08-31 Westinghouse Electric Corp Quick resetting apparatus

Also Published As

Publication number Publication date
US3707651A (en) 1972-12-26
ES404296A1 (es) 1975-06-01
FR2143825A1 (enExample) 1973-02-09
GB1404823A (en) 1975-09-03
SE384308B (sv) 1976-04-26
FR2143825B1 (enExample) 1976-10-29

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