JPS58169744U - VHF tuner input tuning circuit - Google Patents
VHF tuner input tuning circuitInfo
- Publication number
- JPS58169744U JPS58169744U JP6410582U JP6410582U JPS58169744U JP S58169744 U JPS58169744 U JP S58169744U JP 6410582 U JP6410582 U JP 6410582U JP 6410582 U JP6410582 U JP 6410582U JP S58169744 U JPS58169744 U JP S58169744U
- Authority
- JP
- Japan
- Prior art keywords
- trap
- coil
- channel trap
- tuning circuit
- input tuning
- 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
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図は従来の入力同調回路の回路図、第２図ａ、
ｂには第１図の入力同調回路におけるハイチャンネル受
信時及びローチャンネル受信時の等価回路図、第３図は
本考案の一実施例を示す入方向 □調回路の回路図、第
４図ａ、 ｂは第３図の入力同調回路におけるハイチ
ャンネル受信時及びローチャンネル受信時の等価回路図
である。
１、 ２． ３． ４・・・コイル、５． ８． １４
・・・直流阻止用コンデンサ、６・・・可変容量ダイオ
ード、７゜１５・・・スイッチング用ダイオード、９・
・・結合用コーンデンサ、１０・・・トランジスタ、１
１・・・端子、１２・・・トラップ用コンデンサ、１３
．１６・・・トラ゛ツブコイル。Figure 1 is a circuit diagram of a conventional input tuning circuit, Figure 2a,
b is an equivalent circuit diagram of the input tuning circuit shown in Fig. 1 during high channel reception and low channel reception; Fig. 3 is a circuit diagram of the input tuning circuit showing an embodiment of the present invention; Fig. 4a , b are equivalent circuit diagrams at the time of high channel reception and low channel reception in the input tuning circuit of FIG. 3. 1, 2. 3. 4... Coil, 5. 8. 14
...DC blocking capacitor, 6...Variable capacitance diode, 7゜15...Switching diode, 9.
...Coupling cone capacitor, 10...Transistor, 1
1... Terminal, 12... Trap capacitor, 13
．． 16...Trave coil.
Claims (1)
コンデンサと、ローチャンネルトラップ用コイルと、ス
イッチング用ダイオードと、ハイチャンネルトラップ用
コイルとを具備し、前記ローチャンネルトラップ・ハイ
チャンネルトラップ兼用コンデンサと前記ローチャンネ
ルトラップ用コイルとの接続点に前記スイッチング用ダ
イオードと前記ハイチャンネルトラップ用コイルとから
成る直列回路の一端を接続し、前記スイッチング゛ 用
ダイオードのオンオフに基づきトラップ回路のトラップ
周波数を切換えることを特徴とするＶＨＦチューナの入
力同調回路。It is equipped with a capacitor that serves as a low channel trap and a high channel trap, a coil for a low channel trap, a switching diode, and a coil for a high channel trap, and the capacitor that serves as a low channel trap and a high channel trap and the coil for a low channel trap. A VHF tuner characterized in that one end of a series circuit consisting of the switching diode and the high channel trap coil is connected to a connection point between the switching diode and the high channel trap coil, and the trap frequency of the trap circuit is switched based on whether the switching diode is turned on or off. input tuning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6410582U JPS58169744U (en) | 1982-05-01 | 1982-05-01 | VHF tuner input tuning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6410582U JPS58169744U (en) | 1982-05-01 | 1982-05-01 | VHF tuner input tuning circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58169744U true JPS58169744U (en) | 1983-11-12 |
| JPH0134442Y2 JPH0134442Y2 (en) | 1989-10-19 |
Family
ID=30074155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6410582U Granted JPS58169744U (en) | 1982-05-01 | 1982-05-01 | VHF tuner input tuning circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169744U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6442766B2 (en) | 2014-12-11 | 2018-12-26 | 富士通コネクテッドテクノロジーズ株式会社 | Wireless communication apparatus, wireless communication method, and wireless communication program |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53116214U (en) * | 1977-02-24 | 1978-09-16 |
-
1982
- 1982-05-01 JP JP6410582U patent/JPS58169744U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53116214U (en) * | 1977-02-24 | 1978-09-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0134442Y2 (en) | 1989-10-19 |
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