KR850001674Y1 - 텔레비젼의 튜너밴드 절환회로 - Google Patents
텔레비젼의 튜너밴드 절환회로 Download PDFInfo
- Publication number
- KR850001674Y1 KR850001674Y1 KR2019830010561U KR830010561U KR850001674Y1 KR 850001674 Y1 KR850001674 Y1 KR 850001674Y1 KR 2019830010561 U KR2019830010561 U KR 2019830010561U KR 830010561 U KR830010561 U KR 830010561U KR 850001674 Y1 KR850001674 Y1 KR 850001674Y1
- Authority
- KR
- South Korea
- Prior art keywords
- tuner
- operational amplifier
- voltage
- band
- input terminal
- Prior art date
Links
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
Description
Claims (1)
- 전자동조튜너(2)를 사용하는 텔레비젼에 있어서, 저항(R1)(R2) 및 가변저항(VR1)으로 구성된 기준 전압설정부(3)의 출력측은 선택된 밴드에 적합한 동조전압을 튜너 동조전압 공급단자(TU)에 공급하는 튜너 동조전압공급회로(1)에 접속하고, 또한 상기의 기준전압 설정부(3)의 출력측은 저항(R3) 및 다이오드(D1)와 저항(R5)과, 저항(R6)을 각각 통하여 연산증폭기(OP1)의 마이너스 입력단자(-)와, 연산증폭기(OP2)(OP3)의 플러스 입력단자(+)에 각각 접속하여 그의 출력측을 VHF 로우밴드, VHF 하이밴드, UHF 밴드 전원공급단자(LB)(HB)(UB)에 각각 접속하되, 연산증폭기(OP2)의 출력측은 다이오드(D2)를 통하여 연산증폭기(OP1)의 마이너스 입력단자(-)에 접속하고 연산증폭기(OP3)의 출력측은 저항(R8)을 통하여 트랜지스터(TR1)의 베이스에 접속하고, 그의 콜렉터는 연산증폭기(OP2)의 플러스 입력단자(+)에 접속하여 기준전압 설정부(3)의 가변전압에 따라 자동으로 튜너(2)의 밴드를 절환할 수 있게 구성됨을 특징으로 하는 텔레비젼의 튜너 밴드 절환회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019830010561U KR850001674Y1 (ko) | 1983-12-10 | 1983-12-10 | 텔레비젼의 튜너밴드 절환회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019830010561U KR850001674Y1 (ko) | 1983-12-10 | 1983-12-10 | 텔레비젼의 튜너밴드 절환회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR850001674Y1 true KR850001674Y1 (ko) | 1985-08-09 |
KR850005496U KR850005496U (ko) | 1985-08-10 |
Family
ID=70160351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019830010561U KR850001674Y1 (ko) | 1983-12-10 | 1983-12-10 | 텔레비젼의 튜너밴드 절환회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR850001674Y1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100463224B1 (ko) * | 2002-05-15 | 2004-12-29 | 권창성 | 조립식 수로관 |
KR100463225B1 (ko) * | 2002-05-15 | 2004-12-29 | 권창성 | 급경사면용 조립식 수로관 |
-
1983
- 1983-12-10 KR KR2019830010561U patent/KR850001674Y1/ko active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100463224B1 (ko) * | 2002-05-15 | 2004-12-29 | 권창성 | 조립식 수로관 |
KR100463225B1 (ko) * | 2002-05-15 | 2004-12-29 | 권창성 | 급경사면용 조립식 수로관 |
Also Published As
Publication number | Publication date |
---|---|
KR850005496U (ko) | 1985-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19831210 |
|
UA0201 | Request for examination |
Patent event date: 19831210 Patent event code: UA02012R01D Comment text: Request for Examination of Application |
|
UG1604 | Publication of application |
Patent event code: UG16041S01I Comment text: Decision on Publication of Application Patent event date: 19850705 |
|
UG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
UE0701 | Decision of registration |
Patent event date: 19851016 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |