JPS61139033U - - Google Patents
Info
- Publication number
- JPS61139033U JPS61139033U JP2066985U JP2066985U JPS61139033U JP S61139033 U JPS61139033 U JP S61139033U JP 2066985 U JP2066985 U JP 2066985U JP 2066985 U JP2066985 U JP 2066985U JP S61139033 U JPS61139033 U JP S61139033U
- Authority
- JP
- Japan
- Prior art keywords
- trap
- circuit
- intermediate frequency
- carrier frequency
- video
- 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
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はそのＩＦ段の出力特性を示す図である。第３
図は従来のチユーナの要部を示す回路図、第４図
はそのＩＦ段の出力特性を示す図である。
４：中間周波増幅回路、８，９：トラツプ回路
。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure shows the output characteristics of the IF stage. Third
The figure is a circuit diagram showing the main parts of a conventional tuner, and FIG. 4 is a diagram showing the output characteristics of its IF stage. 4: intermediate frequency amplification circuit, 8, 9: trap circuit.
Claims (1)
れた中間周波増幅回路を備えるチユーナに於いて
、前記中間周波増幅回路の入力側と出力側にそれ
ぞれトラツプ回路を設け、このトラツプ回路の一
方を上側隣々チヤンネルの映像ＩＦキヤリア周波
数をトラツプ点とする直列共振回路で構成し、他
方のトラツプ回路を下側隣々チヤンネルの映像Ｉ
Ｆキヤリア周波数をトラツプ点とする並列共振回
路で構成したことを特徴とするチユーナ。 In a tuner equipped with an intermediate frequency amplifier circuit in which a wideband intermediate frequency filter is connected to the output side, a trap circuit is provided on the input side and the output side of the intermediate frequency amplifier circuit, respectively, and one of the trap circuits is connected to the upper adjacent trap circuit. It consists of a series resonant circuit with the video IF carrier frequency of the channel as the trap point, and the other trap circuit is connected to the video IF carrier frequency of the channel below.
A tuner comprising a parallel resonant circuit with the F carrier frequency as a trap point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2066985U JPS61139033U (en) | 1985-02-15 | 1985-02-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2066985U JPS61139033U (en) | 1985-02-15 | 1985-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61139033U true JPS61139033U (en) | 1986-08-28 |
Family
ID=30511377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2066985U Pending JPS61139033U (en) | 1985-02-15 | 1985-02-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61139033U (en) |
-
1985
- 1985-02-15 JP JP2066985U patent/JPS61139033U/ja active Pending
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