JPS6213036U - - Google Patents
Info
- Publication number
- JPS6213036U JPS6213036U JP10178685U JP10178685U JPS6213036U JP S6213036 U JPS6213036 U JP S6213036U JP 10178685 U JP10178685 U JP 10178685U JP 10178685 U JP10178685 U JP 10178685U JP S6213036 U JPS6213036 U JP S6213036U
- Authority
- JP
- Japan
- Prior art keywords
- input terminal
- input
- antenna
- pass filter
- unbalanced
- 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
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案の電子同調型チユーナの入力回
路を示す回路図、第２図は従来の二端子入力型の
電子同調型チユーナの入力回路を示す回路図、第
３図は従来の一端子入力型の電子同調型チユーナ
の入力回路を示す回路図である。
４１……７５Ω不平衡入力端子、４２，４３，
４４，５３……コイル、４８……ＶＨＦ入力同調
回路、４５，４６，４７，５１，５２，５７，５
８，６１……コンデンサ、５４……不平衡アンテ
ナトランス、５６……可変容量ダイオード、５５
……アンテナインダクタ、７１，７１′……３０
０Ω平衡入力端子、７２……平衡アンテナトラン
ス。
Figure 1 is a circuit diagram showing the input circuit of the electronically tuned tuner of the present invention, Figure 2 is a circuit diagram showing the input circuit of a conventional two-terminal input type electronically tuned tuner, and Figure 3 is the conventional one-terminal input circuit. FIG. 2 is a circuit diagram showing an input circuit of an input-type electronically tuned tuner. 41...75Ω unbalanced input terminal, 42, 43,
44, 53... Coil, 48... VHF input tuning circuit, 45, 46, 47, 51, 52, 57, 5
8, 61... Capacitor, 54... Unbalanced antenna transformer, 56... Variable capacitance diode, 55
...Antenna inductor, 71, 71'...30
0Ω balanced input terminal, 72...Balanced antenna transformer.
Claims (1)
したＶＨＦ用ローパスフイルタと、このローパス
フイルタに接続したＶＨＦ用入力同調回路と、前
記７５Ω入力端子に接続したＵＨＦ用ハイパスフ
イルタと、このハイパスフイルタに接続した不平
衡アンテナトランスと、３００Ω平衡入力端子と
、この入力端子に接続した平衡アンテナトランス
と、前記不平衡アンテナトランス及び前記平衡ア
ンテナトランスと電磁的に結合可能に配置された
アンテナインダクタと、このアンテナインダクタ
に接続して設けられチユーニング電圧の印加によ
つてＵＨＦ信号の入力同調をとるための同調回路
とを具備したことを特徴とする電子同調型チユー
ナの入力回路。 75Ω unbalanced input terminal, a VHF low-pass filter connected to this input terminal, a VHF input tuning circuit connected to this low-pass filter, a UHF high-pass filter connected to the 75Ω input terminal, and connected to this high-pass filter. an unbalanced antenna transformer, a 300Ω balanced input terminal, a balanced antenna transformer connected to this input terminal, an antenna inductor arranged to be electromagnetically coupled to the unbalanced antenna transformer and the balanced antenna transformer, and this antenna. 1. An input circuit for an electronically tuned tuner, comprising: a tuning circuit connected to an inductor for tuning the input of a UHF signal by applying a tuning voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10178685U JPS6213036U (en) | 1985-07-05 | 1985-07-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10178685U JPS6213036U (en) | 1985-07-05 | 1985-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6213036U true JPS6213036U (en) | 1987-01-26 |
Family
ID=30972832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10178685U Pending JPS6213036U (en) | 1985-07-05 | 1985-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6213036U (en) |
-
1985
- 1985-07-05 JP JP10178685U patent/JPS6213036U/ja active Pending
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