JPS6433235U - - Google Patents
Info
- Publication number
- JPS6433235U JPS6433235U JP12730687U JP12730687U JPS6433235U JP S6433235 U JPS6433235 U JP S6433235U JP 12730687 U JP12730687 U JP 12730687U JP 12730687 U JP12730687 U JP 12730687U JP S6433235 U JPS6433235 U JP S6433235U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation circuit
- active element
- channel coil
- switching
- diode
- 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
- 230000010355 oscillation Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims description 2
- 241000231739 Rutilus rutilus Species 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Superheterodyne Receivers (AREA)
Description
第1図は本考案の一実施例を示す局部発振回路
の回路図、第2図は従来の局部発振回路を示す回
路図である。
11……局部発振回路、12……能動素子、1
5……共振回路、16……スイツチングダイオー
ド、18,19……直流阻止コンデンサ、23…
…ハイチヤンネル動作電圧供給回路、24……ロ
ーチヤンネル動作電圧供給回路。
FIG. 1 is a circuit diagram of a local oscillation circuit showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional local oscillation circuit. 11... Local oscillation circuit, 12... Active element, 1
5... Resonance circuit, 16... Switching diode, 18, 19... DC blocking capacitor, 23...
...High channel operating voltage supply circuit, 24...Lower channel operating voltage supply circuit.
Claims (1)
ヤンネルコイルにハイチヤンネルコイル及び可変
容量ダイオードと共に能動素子を接続して発振回
路を構成し、 ハイチヤンネル受信時の動作電圧を上記ローチ
ヤンネルコイルを介してバンド切換用スイツチン
グダイオードから上記能動素子に供給し、上記ス
イツチングダイオードを導通させることを特徴と
するVHFチユーナの局部発振回路。[Claims for Utility Model Registration] An oscillation circuit is constructed by connecting an active element together with a high channel coil and a variable capacitance diode to a low channel coil with DC blocking capacitors connected on both sides, and the operating voltage when receiving the high channel is as above. A local oscillation circuit for a VHF tuner, characterized in that the switching diode for band switching is supplied to the active element via a roach channel coil, and the switching diode is made conductive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987127306U JPH0411391Y2 (en) | 1987-08-20 | 1987-08-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987127306U JPH0411391Y2 (en) | 1987-08-20 | 1987-08-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6433235U true JPS6433235U (en) | 1989-03-01 |
JPH0411391Y2 JPH0411391Y2 (en) | 1992-03-23 |
Family
ID=31379618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987127306U Expired JPH0411391Y2 (en) | 1987-08-20 | 1987-08-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0411391Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02301211A (en) * | 1989-04-14 | 1990-12-13 | Thomson Consumer Electron Inc | Oscillator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4879559A (en) * | 1972-01-24 | 1973-10-25 |
-
1987
- 1987-08-20 JP JP1987127306U patent/JPH0411391Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4879559A (en) * | 1972-01-24 | 1973-10-25 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02301211A (en) * | 1989-04-14 | 1990-12-13 | Thomson Consumer Electron Inc | Oscillator |
Also Published As
Publication number | Publication date |
---|---|
JPH0411391Y2 (en) | 1992-03-23 |
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