JPS60169956U - electronic tuning tuner - Google Patents
electronic tuning tunerInfo
- Publication number
- JPS60169956U JPS60169956U JP5701784U JP5701784U JPS60169956U JP S60169956 U JPS60169956 U JP S60169956U JP 5701784 U JP5701784 U JP 5701784U JP 5701784 U JP5701784 U JP 5701784U JP S60169956 U JPS60169956 U JP S60169956U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- tuning
- voltage supply
- supply line
- variable capacitance
- 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
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電子同調チューナの一例を示す概略構成
図、第２図及び第３図は本考案の異なる二つの実施例を
それぞれ示す概略構成図、第４図は第２図の実施例のア
ンテナ端子電圧特性を示す特性図である。
５．６・・・入力同調回路、９，１０・・・段間結合回
路、１１．１２・・・局部発振回路、Ｄ１〜Ｄ８・・・
可変容量ダイオード、１５ａ、１５ｂ・・・同調電圧供
給 ゛ライン、Ｒ９？ Ｒ９’ｔ Ｒ９”・・・抵抗
、Ｃ，、Ｃ２・・・コンデンサ。FIG. 1 is a schematic configuration diagram showing an example of a conventional electronic tuning tuner, FIGS. 2 and 3 are schematic configuration diagrams showing two different embodiments of the present invention, and FIG. 4 is an example of the embodiment of FIG. 2. FIG. 3 is a characteristic diagram showing the antenna terminal voltage characteristics of the antenna. 5.6... Input tuning circuit, 9, 10... Interstage coupling circuit, 11.12... Local oscillation circuit, D1 to D8...
Variable capacitance diode, 15a, 15b... Tuning voltage supply ゛Line, R9? R9't R9''...Resistor, C,, C2...Capacitor.
Claims (1)
変容量ダイオードを備えるチューナに於いて、前記局部
発振回路内の可変容量ダイオードへの同調電圧供給ライ
ンと基準電位点との間にコンデンサを接続すると共に、
上記同調電圧供給ラインと前記入力同調回路及び段間結
合回路内の各可変容量ダイオードへの同調電圧供給ライ
ンとの間に抵抗またはインダクタンスを接続し、この抵
抗またはインダクタンスと前記コンデンサからなるフィ
ルタによって局部発振信号の前記入力同調回路及び段間
結合回路への進入を阻止するようにしたことを特徴とす
る電子同調チューナ。In a tuner including a variable capacitance diode in each of the input tuning circuit, the interstage coupling circuit, and the local oscillation circuit, a capacitor is connected between the tuning voltage supply line to the variable capacitance diode in the local oscillation circuit and the reference potential point. Along with connecting,
A resistor or inductance is connected between the tuning voltage supply line and the tuning voltage supply line to each variable capacitance diode in the input tuning circuit and the interstage coupling circuit, and a filter consisting of the resistor or inductance and the capacitor is used to locally An electronic tuning tuner characterized in that an oscillation signal is prevented from entering the input tuning circuit and the interstage coupling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701784U JPS60169956U (en) | 1984-04-18 | 1984-04-18 | electronic tuning tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5701784U JPS60169956U (en) | 1984-04-18 | 1984-04-18 | electronic tuning tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60169956U true JPS60169956U (en) | 1985-11-11 |
Family
ID=30581156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5701784U Pending JPS60169956U (en) | 1984-04-18 | 1984-04-18 | electronic tuning tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169956U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140729U (en) * | 1974-09-20 | 1976-03-26 |
-
1984
- 1984-04-18 JP JP5701784U patent/JPS60169956U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140729U (en) * | 1974-09-20 | 1976-03-26 |
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