JPS5596709A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPS5596709A
JPS5596709A JP394979A JP394979A JPS5596709A JP S5596709 A JPS5596709 A JP S5596709A JP 394979 A JP394979 A JP 394979A JP 394979 A JP394979 A JP 394979A JP S5596709 A JPS5596709 A JP S5596709A
Authority
JP
Japan
Prior art keywords
vhf
delay quantity
band
uhf
quantity setting
Prior art date
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.)
Pending
Application number
JP394979A
Other languages
Japanese (ja)
Inventor
Hirohide Niimi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP394979A priority Critical patent/JPS5596709A/en
Publication of JPS5596709A publication Critical patent/JPS5596709A/en
Pending 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
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To realize a S/N and a saturation-proof characteristic of each tuner optimum for every band by providing two sets of AGC delay quantity setting circuits independently for UHF and VHF in respect to the TV receiver which can select and receive the UHF channel and the VHF channel. CONSTITUTION:AGC delay quantity setting circuit 7 for VHF is constituted by resistances R1 and R2, variable resistance VR1, diode D1, and diodes D3 and D4 for the low band or the high band of VHF, and similarly, AGC delay quantity setting cricuit 9 for UHF is constituted by resistances R3 and R4, variable resistance R2, and diode D2, and these circuits are switched by band switching circuit 8 to set a delay quantity.
JP394979A 1979-01-19 1979-01-19 Television receiver Pending JPS5596709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP394979A JPS5596709A (en) 1979-01-19 1979-01-19 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP394979A JPS5596709A (en) 1979-01-19 1979-01-19 Television receiver

Publications (1)

Publication Number Publication Date
JPS5596709A true JPS5596709A (en) 1980-07-23

Family

ID=11571357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP394979A Pending JPS5596709A (en) 1979-01-19 1979-01-19 Television receiver

Country Status (1)

Country Link
JP (1) JPS5596709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949812A1 (en) * 1998-04-10 1999-10-13 Alps Electric Co., Ltd. Automatic gain control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949812A1 (en) * 1998-04-10 1999-10-13 Alps Electric Co., Ltd. Automatic gain control apparatus

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