FR2233749B1 - - Google Patents

Info

Publication number
FR2233749B1
FR2233749B1 FR7421134A FR7421134A FR2233749B1 FR 2233749 B1 FR2233749 B1 FR 2233749B1 FR 7421134 A FR7421134 A FR 7421134A FR 7421134 A FR7421134 A FR 7421134A FR 2233749 B1 FR2233749 B1 FR 2233749B1
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
FR7421134A
Other versions
FR2233749A1 (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.)
Sony Corp
Original Assignee
Sony 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
Priority claimed from JP7191273U external-priority patent/JPS5323415Y2/ja
Priority claimed from JP7191473U external-priority patent/JPS5323417Y2/ja
Priority claimed from JP7191373U external-priority patent/JPS5323416Y2/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2233749A1 publication Critical patent/FR2233749A1/fr
Application granted granted Critical
Publication of FR2233749B1 publication Critical patent/FR2233749B1/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
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3063—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver using at least one transistor as controlling device, the transistor being used as a variable impedance device
    • 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
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
FR7421134A 1973-06-18 1974-06-18 Expired FR2233749B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP7191273U JPS5323415Y2 (fr) 1973-06-18 1973-06-18
JP7191473U JPS5323417Y2 (fr) 1973-06-18 1973-06-18
JP7191373U JPS5323416Y2 (fr) 1973-06-18 1973-06-18

Publications (2)

Publication Number Publication Date
FR2233749A1 FR2233749A1 (fr) 1975-01-10
FR2233749B1 true FR2233749B1 (fr) 1978-01-13

Family

ID=27300801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7421134A Expired FR2233749B1 (fr) 1973-06-18 1974-06-18

Country Status (6)

Country Link
US (1) US3903480A (fr)
DE (1) DE2429094A1 (fr)
FR (1) FR2233749B1 (fr)
GB (1) GB1470456A (fr)
IT (1) IT1017019B (fr)
NL (1) NL7408173A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3276515D1 (en) * 1982-06-22 1987-07-09 Telefongyar Frequency selective amplifier with gain control
GB2148636A (en) * 1983-09-15 1985-05-30 Sinclair Res Ltd Improvements in or relating to television receivers
US4590613A (en) * 1983-12-23 1986-05-20 Rca Corporation Bipolar AGC with RF transistor DC bias point stabilization
JPS6220405A (ja) * 1985-07-18 1987-01-29 Pioneer Electronic Corp 増幅度調整回路
DE19615285A1 (de) * 1996-04-18 1997-10-23 Dirk Dipl Ing Borgers Geregelter Beschallungsverstärker ohne Treiberübertrager für unipolare Spannungsversorgung mit hohem Wirkungsgrad

Also Published As

Publication number Publication date
DE2429094A1 (de) 1975-03-13
NL7408173A (fr) 1974-12-20
GB1470456A (en) 1977-04-14
IT1017019B (it) 1977-07-20
FR2233749A1 (fr) 1975-01-10
US3903480A (en) 1975-09-02

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