JPH0339936U - - Google Patents
Info
- Publication number
- JPH0339936U JPH0339936U JP9912289U JP9912289U JPH0339936U JP H0339936 U JPH0339936 U JP H0339936U JP 9912289 U JP9912289 U JP 9912289U JP 9912289 U JP9912289 U JP 9912289U JP H0339936 U JPH0339936 U JP H0339936U
- Authority
- JP
- Japan
- Prior art keywords
- vhf
- uhf
- tuner
- signals
- 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 5
Landscapes
- Superheterodyne Receivers (AREA)
Description
第１図はこの考案に係る電子同調チユーナの一
実施例を示す構成図、第２図は上記実施例の具体
回路の一例を示す回路図、第３図はＶＨＦハイバ
ンド受信時の入力単同調回路の周波数特性を示す
特性図、第４図はＵＨＦ・ＶＨＦ一体形チユーナ
の基本構成を示す構成図、第５図はＵＨＦ・ＶＨ
Ｆ混信を対策した従来の電子同調チユーナの一例
を示す回路図である。
１１…ＶＨＦ入力バンドパスフイルタ、１２…
ＶＨＦ入力単同調回路、１３…ＲＦ増幅回路、１
４…段間同調回路、１５…ＶＨＦミキサ、１６…
ＶＨＦローカル局部発振器、２１…ＵＨＦ入力単
同調回路、２２…ＲＦ増幅回路、２３…段間同調
回路、２４…ＵＨＦミキサ、２５…ＵＨＦローカ
ル発振器、ＵＢ…ＵＨＦ駆動電圧、ＶＢ，ＢＬ，
ＢＨ…ＶＨＦ駆動電圧。
Fig. 1 is a block diagram showing an embodiment of an electronically tuned tuner according to this invention, Fig. 2 is a circuit diagram showing an example of a specific circuit of the above embodiment, and Fig. 3 is an input single tuning when receiving VHF high band. Characteristic diagram showing the frequency characteristics of the circuit. Figure 4 is a configuration diagram showing the basic configuration of the UHF/VHF integrated tuner. Figure 5 is the UHF/VH integrated tuner.
1 is a circuit diagram showing an example of a conventional electronic tuning tuner that takes measures against F interference. 11...VHF input bandpass filter, 12...
VHF input single tuning circuit, 13...RF amplifier circuit, 1
4...Inter-stage tuning circuit, 15...VHF mixer, 16...
VHF local local oscillator, 21...UHF input single tuning circuit, 22...RF amplifier circuit, 23...Inter-stage tuning circuit, 24...UHF mixer, 25...UHF local oscillator, UB...UHF drive voltage, VB, BL,
BH...VHF drive voltage.
Claims (1)
するＶＨＦチユーナと、 ＵＨＦ受信時に上記ＵＨＦチユーナを制御する
制御電圧を上記ＶＨＦチユーナに加え、ＶＨＦチ
ユーナを所定のバンドモードに切換える制御手段
とを具備することを特徴とする電子同調チユーナ
。[Scope of Claim for Utility Model Registration] A UHF tuner that receives UHF signals, a VHF tuner that receives VHF signals in multiple band modes, and a control voltage that controls the UHF tuner when receiving UHF signals, which is added to the VHF tuner. , and control means for switching the VHF tuner to a predetermined band mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9912289U JPH0339936U (en) | 1989-08-28 | 1989-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9912289U JPH0339936U (en) | 1989-08-28 | 1989-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339936U true JPH0339936U (en) | 1991-04-17 |
Family
ID=31648183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9912289U Pending JPH0339936U (en) | 1989-08-28 | 1989-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339936U (en) |
-
1989
- 1989-08-28 JP JP9912289U patent/JPH0339936U/ja active Pending
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