JPS60139349U - Chuyuna - Google Patents
ChuyunaInfo
- Publication number
- JPS60139349U JPS60139349U JP2774484U JP2774484U JPS60139349U JP S60139349 U JPS60139349 U JP S60139349U JP 2774484 U JP2774484 U JP 2774484U JP 2774484 U JP2774484 U JP 2774484U JP S60139349 U JPS60139349 U JP S60139349U
- Authority
- JP
- Japan
- Prior art keywords
- band
- channel
- capacitive coupling
- actance
- linear
- 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.)
- Granted
Links
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のチューナの一例を示す接続図、第２図は
その動作説明に供するゲイン特性図、第３図及び第５図
は夫々この考案に係るチューナの要部の一例を示す接続
図、第４図はバンド切換用スイッチングパルスの波形図
である。
１０は高周波信号増幅回路、２０はバンドパスフィルタ
、３０はミキサ、４０は容量結合回路、４１．４２は第
１及び第２の容量結合手段、Ｃａ〜Ｃｄはリアクタンス
素子である。
第２図
−−第４図Fig. 1 is a connection diagram showing an example of a conventional tuner, Fig. 2 is a gain characteristic diagram to explain its operation, and Figs. 3 and 5 are connection diagrams showing an example of the main parts of the tuner according to this invention. , FIG. 4 is a waveform diagram of a switching pulse for band switching. 10 is a high frequency signal amplification circuit, 20 is a band pass filter, 30 is a mixer, 40 is a capacitive coupling circuit, 41 and 42 are first and second capacitive coupling means, and Ca to Cd are reactance elements. Figure 2--Figure 4
Claims (1)
ネルバンドとハイチャンネルバンドとのバンド切換手段
とを備えたバンドパスフィルタを有し、このバンドパス
フィルタとミキサとの間に、 容量結合回路が設けられ
、この容量結合回路はゲイン補正用の可変容量ダイオー
ドと直列又は並列に接続された一対のりアクタンス素子
とで構成され、これら一対のりアクタンス素子をバンド
切換に応じて選択することにより、同一バンド内での各
チャンネル間のゲインを補正するようにしたチューナ。It has a bandpass filter equipped with a variable capacitance die for channel selection and band switching means between a low channel band and a high channel band, and a capacitive coupling circuit is connected between the bandpass filter and the mixer. This capacitive coupling circuit consists of a variable capacitance diode for gain correction and a pair of linear actance elements connected in series or parallel.By selecting these pair of linear actance elements according to band switching, the same A tuner that corrects the gain between each channel within a band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2774484U JPS60139349U (en) | 1984-02-28 | 1984-02-28 | Chuyuna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2774484U JPS60139349U (en) | 1984-02-28 | 1984-02-28 | Chuyuna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60139349U true JPS60139349U (en) | 1985-09-14 |
| JPH0230937Y2 JPH0230937Y2 (en) | 1990-08-21 |
Family
ID=30524976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2774484U Granted JPS60139349U (en) | 1984-02-28 | 1984-02-28 | Chuyuna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139349U (en) |
-
1984
- 1984-02-28 JP JP2774484U patent/JPS60139349U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0230937Y2 (en) | 1990-08-21 |
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