JPS6356835U - - Google Patents
Info
- Publication number
- JPS6356835U JPS6356835U JP1986150971U JP15097186U JPS6356835U JP S6356835 U JPS6356835 U JP S6356835U JP 1986150971 U JP1986150971 U JP 1986150971U JP 15097186 U JP15097186 U JP 15097186U JP S6356835 U JPS6356835 U JP S6356835U
- Authority
- JP
- Japan
- Prior art keywords
- band
- switching element
- input
- coil
- conductive
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は従来例を示す回路図である。
１８……同一入力端子、２０……第１コンデン
サ、２１……第２コンデンサ、２２……第１コイ
ル、２３……第２コイル、２４……第１のスイツ
チング素子（第１のスイツチングダイオード）、
２５……第２のスイツチング素子（第２のスイツ
チングダイオード）、２６……第３のスイツチン
グ素子（第１のスイツチングダイオード）、３７
……入力インダクタ、３８……第４のスイツチン
グ素子（第１のスイツチングダイオード）。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional example. 18... Same input terminal, 20... First capacitor, 21... Second capacitor, 22... First coil, 23... Second coil, 24... First switching element (first switching diode) ),
25... Second switching element (second switching diode), 26... Third switching element (first switching diode), 37
...Input inductor, 38...Fourth switching element (first switching diode).
Claims (1)
ＡＴＶ帯、ＶＨＦ帯に選択分岐する入力回路であ
つて、入力信号が供給される第１コンデンサに、
第２コンデンサとＵＨＦ帯入力インダクタに電磁
結合される第１コイルの直列回路に第２コイルを
並列接続した直並列回路を接続し、第１、第２コ
イルの接続点を第１のスイツチング素子を介して
高周波的に接地すると共に第２、第３のスイツチ
ング素子を接続し、第１のスイツチング素子の導
通時に第１コイルとＵＨＦ帯インダクタを電磁結
合させ、第１のスイツチング素子の非導通時に第
２、第３のスイツチング素子を選択的に導通させ
てＣＡＴＶ帯とＶＨＦ帯の信号を得るようにした
ことを特徴とするチユーナ入力回路。 Signals input to the same input terminal are UHF band, C
The input circuit selectively branches into the ATV band and the VHF band, and the first capacitor to which the input signal is supplied,
A series-parallel circuit in which a second coil is connected in parallel is connected to a series circuit of a first coil that is electromagnetically coupled to a second capacitor and a UHF band input inductor, and a connection point between the first and second coils is connected to a first switching element. The first coil and the UHF band inductor are electromagnetically coupled to each other when the first switching element is conductive, and when the first switching element is non-conductive, the second and third switching elements are connected to each other. 2. A tuner input circuit characterized in that the third switching element is selectively rendered conductive to obtain signals in the CATV band and VHF band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986150971U JPH0339961Y2 (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986150971U JPH0339961Y2 (en) | 1986-09-30 | 1986-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6356835U true JPS6356835U (en) | 1988-04-15 |
| JPH0339961Y2 JPH0339961Y2 (en) | 1991-08-22 |
Family
ID=31067599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986150971U Expired JPH0339961Y2 (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339961Y2 (en) |
-
1986
- 1986-09-30 JP JP1986150971U patent/JPH0339961Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0339961Y2 (en) | 1991-08-22 |
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