JPS6331627U - - Google Patents
Info
- Publication number
- JPS6331627U JPS6331627U JP12638386U JP12638386U JPS6331627U JP S6331627 U JPS6331627 U JP S6331627U JP 12638386 U JP12638386 U JP 12638386U JP 12638386 U JP12638386 U JP 12638386U JP S6331627 U JPS6331627 U JP S6331627U
- Authority
- JP
- Japan
- Prior art keywords
- uhf
- circuit
- diode
- section
- 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
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案に係る電子チユーナの実施例を
示すＵＨＦ部ＩＦ回路の回路図、第２図は従来の
電子チユーナの一具体例を示すＵＨＦ部ＩＦ回路
の回路図、第３図は第２図の回路のＵＨＦ受信時
における２次側同調回路の等価回路図、第４図は
第２図の回路のＶＨＦ受信時における２次側同調
回路の等価回路図である。
Ｓ……スイツチングダイオード、ＶＤ……可変
容量ダイオード。
FIG. 1 is a circuit diagram of a UHF section IF circuit showing an embodiment of an electronic tuner according to the present invention, FIG. 2 is a circuit diagram of a UHF section IF circuit showing a specific example of a conventional electronic tuner, and FIG. FIG. 4 is an equivalent circuit diagram of the secondary side tuning circuit of the circuit shown in FIG. 2 when receiving UHF, and FIG. 4 is an equivalent circuit diagram of the secondary side tuning circuit of the circuit of FIG. 2 when receiving VHF. S... Switching diode, VD... Variable capacitance diode.
Claims (1)
Ｆ回路とをスイツチングダイオードを介して結合
するＵＨＦ―ＶＨＦコンビネーシヨン型チユーナ
において、上記ＵＨＦ部ＩＦ回路の同調容量の一
部に可変容量ダイオード又はスイツチングダイオ
ードを付設し、ＵＨＦ受信時とＶＨＦ受信時とで
前記ＵＨＦ部ＩＦ回路の同調状態を変えることを
特徴とする電子チユーナ。 VHF part mixing circuit and UHF part I when receiving UHF
In a UHF-VHF combination tuner that connects the F circuit via a switching diode, a variable capacitance diode or a switching diode is attached to a part of the tuning capacitance of the UHF section IF circuit, so that the tuning capacitance of the UHF section IF circuit is connected to a variable capacitance diode or a switching diode. An electronic tuner characterized in that the tuning state of the UHF section IF circuit is changed over time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12638386U JPH0332118Y2 (en) | 1986-08-18 | 1986-08-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12638386U JPH0332118Y2 (en) | 1986-08-18 | 1986-08-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6331627U true JPS6331627U (en) | 1988-03-01 |
| JPH0332118Y2 JPH0332118Y2 (en) | 1991-07-08 |
Family
ID=31020137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12638386U Expired JPH0332118Y2 (en) | 1986-08-18 | 1986-08-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332118Y2 (en) |
-
1986
- 1986-08-18 JP JP12638386U patent/JPH0332118Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332118Y2 (en) | 1991-07-08 |