JPH0438152U - - Google Patents
Info
- Publication number
- JPH0438152U JPH0438152U JP1990080469U JP8046990U JPH0438152U JP H0438152 U JPH0438152 U JP H0438152U JP 1990080469 U JP1990080469 U JP 1990080469U JP 8046990 U JP8046990 U JP 8046990U JP H0438152 U JPH0438152 U JP H0438152U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- tuner
- inductance
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Filters And Equalizers (AREA)
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図はこの考案の一実施例のＴＶチユーナの
ＩＦチユーナのＩＦ出力回路の回路図である。第
２図は従来とこの考案との特性のちがいを示す周
波数−漏洩電圧特性図である。第３図は従来の回
路図である。
１……混合回路、３……ＩＦ出力端子、Ｃ１，
Ｃ１１，Ｃ１２……ＩＦ出力端子、Ｌ２……イン
ダクタンス、２２……バンドパスフイルタ。
FIG. 1 is a circuit diagram of an IF output circuit of an IF tuner of a TV tuner according to an embodiment of the present invention. FIG. 2 is a frequency-leakage voltage characteristic diagram showing the difference in characteristics between the conventional device and this invention. FIG. 3 is a conventional circuit diagram. 1... Mixing circuit, 3... IF output terminal, C 1 ,
C11 , C12 ...IF output terminal, L2 ...Inductance, 22...Band pass filter.
Claims (1)
結合するバンドパスフイルタを有するＴＶチユー
ナのＩＦ出力回路において、 前記バンドパスフイルタはインダクタンスとコ
ンデンサの並列回路を含んで構成され、 前記インダクタンス、前記コンデンサ及びその
他の部品の定数を選択して、ＩＦ信号を選択的に
通過させるバンドパス特性をもたせるとともに、
ＶＨＦの最も低い局部発振周波数に対するトラツ
プ特性をもたせるよう構成されていることを特徴
とするＴＶチユーナのＩＦ出力回路。[Claims for Utility Model Registration] In an IF output circuit for a TV tuner having a bandpass filter that couples an IF signal output from a mixing circuit to an IF output terminal, the bandpass filter includes a parallel circuit of an inductance and a capacitor. and selecting constants of the inductance, the capacitor, and other components to provide a bandpass characteristic that selectively passes the IF signal, and
An IF output circuit for a TV tuner, characterized in that it is configured to have a trap characteristic for the lowest local oscillation frequency of VHF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990080469U JPH0438152U (en) | 1990-07-26 | 1990-07-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990080469U JPH0438152U (en) | 1990-07-26 | 1990-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438152U true JPH0438152U (en) | 1992-03-31 |
Family
ID=31625560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990080469U Pending JPH0438152U (en) | 1990-07-26 | 1990-07-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438152U (en) |
-
1990
- 1990-07-26 JP JP1990080469U patent/JPH0438152U/ja active Pending