JPH02130134U - - Google Patents
Info
- Publication number
- JPH02130134U JPH02130134U JP1989038909U JP3890989U JPH02130134U JP H02130134 U JPH02130134 U JP H02130134U JP 1989038909 U JP1989038909 U JP 1989038909U JP 3890989 U JP3890989 U JP 3890989U JP H02130134 U JPH02130134 U JP H02130134U
- Authority
- JP
- Japan
- Prior art keywords
- capacitance
- tuner
- leg
- mixing element
- 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 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案に係るチユーナの実施例の要部
回路図、第２図は本考案に係る実施例のπ型帯域
通過回路等価回路図、及び第３図は、従来の要部
回路図である。
Ｑ１……ＵＨＦ混合用素子、Ｑ２……ダイオー
ド、Ｑ３……ＶＨＦ混合素子、Ｃ４……ＵＨＦ・
ＩＦ結合用コンデンサ、Ｌ……コイル。
FIG. 1 is a circuit diagram of a main part of an embodiment of a tuner according to the present invention, FIG. 2 is an equivalent circuit diagram of a π-type bandpass circuit of an embodiment of the invention, and FIG. 3 is a circuit diagram of a main part of a conventional tuner. It is. Q1 ...UHF mixing element, Q2 ...diode, Q3 ...VHF mixing element, C4 ...UHF・
IF coupling capacitor, L...coil.
Claims (1)
ＨＦ混合用素子のコレクタ容量及び接地用バイア
ス容量を含む静電容量、又他方の脚部をＵＨＦ・
ＩＦ結合容量とＶＨＦ混合用素子の入力容量を含
む静電容量によりそれぞれ構成したことを特徴と
するテレビジヨン用チユーナ。 Connect one leg of the intermediate frequency π-type bandpass circuit to U.
The capacitance including the collector capacitance and grounding bias capacitance of the HF mixing element, and the other leg of the UHF
A tuner for a television, characterized in that the tuner is constituted by capacitances including an IF coupling capacitance and an input capacitance of a VHF mixing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038909U JPH0625067Y2 (en) | 1989-03-31 | 1989-03-31 | Television tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038909U JPH0625067Y2 (en) | 1989-03-31 | 1989-03-31 | Television tuner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02130134U true JPH02130134U (en) | 1990-10-26 |
| JPH0625067Y2 JPH0625067Y2 (en) | 1994-06-29 |
Family
ID=31547338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989038909U Expired - Lifetime JPH0625067Y2 (en) | 1989-03-31 | 1989-03-31 | Television tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625067Y2 (en) |
-
1989
- 1989-03-31 JP JP1989038909U patent/JPH0625067Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0625067Y2 (en) | 1994-06-29 |