JPS61162148U - - Google Patents
Info
- Publication number
- JPS61162148U JPS61162148U JP4617685U JP4617685U JPS61162148U JP S61162148 U JPS61162148 U JP S61162148U JP 4617685 U JP4617685 U JP 4617685U JP 4617685 U JP4617685 U JP 4617685U JP S61162148 U JPS61162148 U JP S61162148U
- Authority
- JP
- Japan
- Prior art keywords
- vhf
- coupling
- circuit
- coil
- uhf
- 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
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案に係るコンビネーシヨンチユー
ナのＩＦ信号結合回路の要部等価回路図、第２図
は第１図の具体的回路図、第３図は一般のコンビ
ネーシヨンチユーナを説明するブロツク図、及び
第４図は従来のチユーナのＩＦ信号結合回路の要
部回路図である。
２１……ＵＨＦチユーナ部、２２……ＶＨＦチ
ユーナ部、２３……同調回路、２４……スイツチ
ングダイオード、２５……結合コンデンサ、２６
……入力側コイル、２７，２９……コンデンサ、
２８……出力側コイル、３０……結合コイル、３
１……抵抗。
Fig. 1 is an equivalent circuit diagram of the main part of the IF signal coupling circuit of the combination tuner according to the present invention, Fig. 2 is a specific circuit diagram of Fig. 1, and Fig. 3 explains a general combination tuner. The block diagram and FIG. 4 are main part circuit diagrams of a conventional tuner IF signal coupling circuit. 21... UHF tuner section, 22... VHF tuner section, 23... Tuning circuit, 24... Switching diode, 25... Coupling capacitor, 26
...Input side coil, 27, 29...Capacitor,
28...Output side coil, 30...Coupling coil, 3
1...Resistance.
Claims (1)
を、同調回路とＯＮ―ＯＦＦ動作するスイツチン
グダイオードを有するＩＦ信号結合回路を通して
ＶＨＦチユーナ部に伝達するＵＨＦ・ＶＨＦコン
ビネーシヨンチユーナにおいて、前記同調回路は
入力側コイル、出力側コイル及びこれら両コイル
の接続点と接地間に介挿した結合コイルを含むと
共にこの結合コイルと並列にダンピング抵抗を接
続し、それによりＶＨＦ受信時に生ずるトラツプ
妨害を阻止することを特徴とするＩＦ信号結合回
路。 In a UHF/VHF combination tuner that transmits an intermediate frequency signal generated in a UHF tuner section to a VHF tuner section through a tuning circuit and an IF signal coupling circuit having an ON-OFF switching diode, the tuning circuit has an input signal. It includes a side coil, an output side coil, and a coupling coil inserted between the connection point of these two coils and ground, and a damping resistor is connected in parallel with this coupling coil, thereby preventing trap interference that occurs during VHF reception. Characteristic IF signal coupling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985046176U JPH0314845Y2 (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985046176U JPH0314845Y2 (en) | 1985-03-28 | 1985-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61162148U true JPS61162148U (en) | 1986-10-07 |
| JPH0314845Y2 JPH0314845Y2 (en) | 1991-04-02 |
Family
ID=30560334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985046176U Expired JPH0314845Y2 (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314845Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5957049U (en) * | 1982-10-08 | 1984-04-13 | アルプス電気株式会社 | High frequency connection circuit |
-
1985
- 1985-03-28 JP JP1985046176U patent/JPH0314845Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5957049U (en) * | 1982-10-08 | 1984-04-13 | アルプス電気株式会社 | High frequency connection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0314845Y2 (en) | 1991-04-02 |