FR2243553B1 - - Google Patents

Info

Publication number
FR2243553B1
FR2243553B1 FR7430282A FR7430282A FR2243553B1 FR 2243553 B1 FR2243553 B1 FR 2243553B1 FR 7430282 A FR7430282 A FR 7430282A FR 7430282 A FR7430282 A FR 7430282A FR 2243553 B1 FR2243553 B1 FR 2243553B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7430282A
Other versions
FR2243553A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Publication of FR2243553A1 publication Critical patent/FR2243553A1/fr
Application granted granted Critical
Publication of FR2243553B1 publication Critical patent/FR2243553B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present
FR7430282A 1973-09-07 1974-09-06 Expired FR2243553B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48100259A JPS5051646A (fr) 1973-09-07 1973-09-07

Publications (2)

Publication Number Publication Date
FR2243553A1 FR2243553A1 (fr) 1975-04-04
FR2243553B1 true FR2243553B1 (fr) 1977-03-25

Family

ID=14269206

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7430282A Expired FR2243553B1 (fr) 1973-09-07 1974-09-06

Country Status (7)

Country Link
US (1) US3927381A (fr)
JP (1) JPS5051646A (fr)
DE (1) DE2441355C3 (fr)
FR (1) FR2243553B1 (fr)
GB (1) GB1476166A (fr)
IT (1) IT1020266B (fr)
SE (1) SE397454B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5422512U (fr) * 1977-07-15 1979-02-14
JPS6114209Y2 (fr) * 1978-11-16 1986-05-02
JPS55157155U (fr) * 1979-04-27 1980-11-12
JPS5671611U (fr) * 1979-11-06 1981-06-12
US4464635A (en) * 1982-11-18 1984-08-07 Zenith Electronics Corporation Non-reactive limiter
JPS6080309A (ja) * 1983-10-09 1985-05-08 Rohm Co Ltd 増幅回路
US5045809A (en) * 1989-08-31 1991-09-03 Samsung Electronics Co., Ltd. Automatic gain control (AGC) circuit for a trunk interface in a private branch exchange (PBX)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767310A (en) * 1954-06-28 1956-10-16 Air Associates Inc Carrier operated squelch circuit
US3050642A (en) * 1959-08-03 1962-08-21 Collins Radio Co Combined squelch circuit and amplifier
US3079558A (en) * 1960-12-05 1963-02-26 Collins Radio Co Squelch circuit
US3374437A (en) * 1964-08-26 1968-03-19 Heath Co Squelch system for radio receivers
JPS4026981Y1 (fr) * 1965-04-02 1965-09-20
US3688197A (en) * 1965-10-21 1972-08-29 Kahn Res Lab Communication system with selection means for determining the modulation mode of a received signal
US3478271A (en) * 1967-01-19 1969-11-11 Vm Corp Noise control circuit
DE1537664B2 (de) * 1967-07-18 1971-01-14 Siemens AG, 1000 Berlin u 8000 München Regelbarer Differenzverstärker
US3719892A (en) * 1970-08-04 1973-03-06 Hitachi Ltd Transistor radio receiver employing an improved squelch circuit
US3798559A (en) * 1971-04-20 1974-03-19 Matsushita Electric Ind Co Ltd Noise reduction system

Also Published As

Publication number Publication date
FR2243553A1 (fr) 1975-04-04
GB1476166A (en) 1977-06-10
SE397454B (sv) 1977-10-31
DE2441355B2 (de) 1981-05-07
IT1020266B (it) 1977-12-20
JPS5051646A (fr) 1975-05-08
US3927381A (en) 1975-12-16
DE2441355A1 (de) 1975-04-10
DE2441355C3 (de) 1982-01-07
SE7410933L (fr) 1975-03-10

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse