JPS5893052U - UHF electronic tuner circuit - Google Patents
UHF electronic tuner circuitInfo
- Publication number
- JPS5893052U JPS5893052U JP18633381U JP18633381U JPS5893052U JP S5893052 U JPS5893052 U JP S5893052U JP 18633381 U JP18633381 U JP 18633381U JP 18633381 U JP18633381 U JP 18633381U JP S5893052 U JPS5893052 U JP S5893052U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- capacitor
- electronic tuner
- tuner circuit
- uhf electronic
- 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
- Noise Elimination (AREA)
- 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図はアンテナ入力絶縁型↑λ共振、同調回路に低周
波成分妨害除去回路を付加した従来の回路図、第２図は
第１図の低周波等価回路と高周波増幅器の入力容量を示
す回路図、第３図は第２図の簡略図、第４図は第１図に
おける低周波成分除去回路を適用したアンテナ入力絶縁
型２点同調回路図、第５図は本考案による低周波成分除
去回路を用いたアンテナ入力絶縁型２点同調回路図であ
る。
１・・・直列付加容量、２・・・共振コイル、３・・・
同調ダイオード、６・・・アンテナ入力コイル、９・・
・接地容量。Figure 1 is a conventional circuit diagram of an antenna input isolated type ↑λ resonance, with a low-frequency component interference removal circuit added to the tuning circuit. Figure 2 is a circuit showing the low-frequency equivalent circuit of Figure 1 and the input capacitance of a high-frequency amplifier. Figure 3 is a simplified diagram of Figure 2, Figure 4 is a diagram of an antenna input isolated two-point tuning circuit to which the low frequency component removal circuit in Figure 1 is applied, and Figure 5 is a low frequency component removal according to the present invention. FIG. 2 is a diagram of an antenna input isolated type two-point tuning circuit using a circuit. 1...Series additional capacitance, 2...Resonance coil, 3...
Tuning diode, 6... Antenna input coil, 9...
・Grounding capacity.
Claims (1)
の一端を第１のコンデンサを介して接地し、他端を可変
容量ダイオードを介して接地してなる直列回路の可変容
量ダイオードと並列に、第２のコンデンサを介して接地
してなる第２のトラッキング調整用の可変インダクタン
スコイルを付加してなる第１の形式の回路に第２のコン
デンサと並列に、微小インダクタンスを介して、高誘電
率コンデンサにて接地される第２の形式の回路を付加し
てなることを特徴とするＵＨＦ電子チューナ回路。A second capacitor is connected in parallel to a variable capacitance diode in a series circuit in which one end of a variable inductance coil for first tracking adjustment is grounded via a first capacitor, and the other end is grounded via a variable capacitance diode. A second type of circuit with a variable inductance coil for tracking adjustment is connected to the ground via a high dielectric constant capacitor in parallel with the second capacitor. A UHF electronic tuner circuit characterized in that it is formed by adding a second type of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18633381U JPS5893052U (en) | 1981-12-16 | 1981-12-16 | UHF electronic tuner circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18633381U JPS5893052U (en) | 1981-12-16 | 1981-12-16 | UHF electronic tuner circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5893052U true JPS5893052U (en) | 1983-06-23 |
Family
ID=29988188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18633381U Pending JPS5893052U (en) | 1981-12-16 | 1981-12-16 | UHF electronic tuner circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5893052U (en) |
-
1981
- 1981-12-16 JP JP18633381U patent/JPS5893052U/en active Pending
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