JPH01129927U - - Google Patents
Info
- Publication number
- JPH01129927U JPH01129927U JP1988026228U JP2622888U JPH01129927U JP H01129927 U JPH01129927 U JP H01129927U JP 1988026228 U JP1988026228 U JP 1988026228U JP 2622888 U JP2622888 U JP 2622888U JP H01129927 U JPH01129927 U JP H01129927U
- Authority
- JP
- Japan
- Prior art keywords
- uhf
- mixer
- vhf
- tuner
- circuit
- 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
Links
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例になるチユーナ回路
の回路ブロツク図、第２図は従来のチユーナ回路
の回路ブロツク図、第３図は第２図に適用される
単同調回路の回路図を夫々示す。
１……コンビネーシヨンチユーナ、２……ＵＨ
Ｆチユーナ部、３……ＶＨＦチユーナ部、４……
ＵＨＦミキサ、６……ＶＨＦミキサ、７……単同
調回路、８，１３……複同調回路、９……切替回
路、１０……ＩＣ化回路、１１……ＵＨＦＯＳＣ
、１２……ＶＨＦＯＳＣ、１４……ＵＨＦ入力回
路、Ｌ３……インダクタンス、Ｃ１〜Ｃ３……コ
ンデンサ、Ｄ１，Ｄ２……ダイオード。
Fig. 1 is a circuit block diagram of a tuner circuit that is an embodiment of the present invention, Fig. 2 is a circuit block diagram of a conventional tuner circuit, and Fig. 3 is a circuit diagram of a single tuning circuit applied to Fig. 2. Show each. 1...Combination Chiyuna, 2...UH
F tuner section, 3... VHF tuner section, 4...
UHF mixer, 6...VHF mixer, 7...single tuning circuit, 8, 13...double tuning circuit, 9...switching circuit, 10...IC circuit, 11...UHFOSC
, 12...VHFOSC, 14...UHF input circuit, L3 ...inductance, C1 - C3 ...capacitor, D1 , D2 ...diode.
Claims (1)
号を受信するコンビネーシヨンチユーナにおいて
、 ＵＨＦミキサとＶＨＦミキサとの間に、入力側
へ漏洩帰還したＩＦ信号を減衰させるトラツプ回
路を接続した事を特徴とするチユーナ回路。[Claim for Utility Model Registration] In a combination tuner that receives television broadcast signals in both the UHF and VHF bands, a trap is provided between the UHF mixer and the VHF mixer to attenuate the IF signal that leaks back to the input side. A tuner circuit characterized by connected circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988026228U JPH01129927U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988026228U JPH01129927U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01129927U true JPH01129927U (en) | 1989-09-05 |
Family
ID=31247667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988026228U Pending JPH01129927U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01129927U (en) |
-
1988
- 1988-02-29 JP JP1988026228U patent/JPH01129927U/ja active Pending
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