JPS6160529U - - Google Patents
Info
- Publication number
- JPS6160529U JPS6160529U JP14481884U JP14481884U JPS6160529U JP S6160529 U JPS6160529 U JP S6160529U JP 14481884 U JP14481884 U JP 14481884U JP 14481884 U JP14481884 U JP 14481884U JP S6160529 U JPS6160529 U JP S6160529U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- coil
- wave
- parallel
- correction
- 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 18
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図はこの考案に係る簡易形ＭＷ−ＬＷ受信
切換回路の一実施例を示す回路構成図、第２図は
同実施例の変形例を示す回路構成図、第３図は同
変形例を説明するための特性曲線図、第４図は従
来のＭＷ−ＬＷ受信切換手段を示す回路構成図で
ある。
Ｌ１〜Ｌ３…コイル、Ｓ１〜Ｓ３…ＭＷ−ＬＷ
切換スイツチ、Ｃ１…ＬＷ用補正コンデンサ、Ｃ
２…ＭＷ用補正コンデンサ、Ｃ３…ＭＷ用トリマ
コンデンサ、Ｃ４…ＭＷ−ＬＷ用可変コンデンサ
、Ｃ５…LWOSC補正コンデンサ、Ｃ６…LWOSCトリ
マコンデンサ、Ｃ７…MWOSCトリマコンデンサ、
Ｃ８…ＭＷ−ＬＷ可変コンデンサ、Ｃ９…MWOSC
補正コンデンサ、Ｔ１…ＭＷ−LWOSC用トランス
、Ｃ１２…ＬＷ用補正コンデンサ、Ｒ１…抵抗、
Ｃ１０…コンデンサ。
Fig. 1 is a circuit diagram showing an embodiment of the simplified MW-LW reception switching circuit according to this invention, Fig. 2 is a circuit diagram showing a modification of the same embodiment, and Fig. 3 is a circuit diagram showing a modification of the same embodiment. FIG. 4 is a characteristic curve diagram for explanation and a circuit configuration diagram showing a conventional MW-LW reception switching means. L1 to L3 ...Coil, S1 to S3 ...MW-LW
Changeover switch, C 1 ...LW correction capacitor, C
2 ... MW correction capacitor, C 3 ... MW trimmer capacitor, C 4 ... MW-LW variable capacitor, C 5 ... LWOSC correction capacitor, C 6 ... LWOSC trimmer capacitor, C 7 ... MWOSC trimmer capacitor,
C8 ...MW-LW variable capacitor, C9 ...MWOSC
Correction capacitor, T1 ...Transformer for MW-LWOSC, C12 ...Correction capacitor for LW, R1 ...Resistor,
C10 ...Capacitor.
Claims (1)
イルに直列接続されて該第１のコイルとともにＬ
Ｗ波同調用となる第２のコイルと、前記第１及び
第２のコイルに並列関係となるように接続される
ＭＷ用補正コンデンサと、前記第１及び第２のコ
イルの接続点から前記第２のコイルに並列関係と
なるように接続されるＬＷ用補正コンデンサと、
ＬＷ用発振動作を行なう第１のコンデンサ及びＭ
Ｗ用発振動作を行なう第２のコンデンサが並列接
続されてなる発振部と、前記第１及び第２のコイ
ルの接続点が一方の固定端に接続され前記第１の
コンデンサの一端が他方の固定端に接続され前記
ＭＷ波受信時に前記第２のコイル、ＬＷ用補正コ
ンデンサ及び第１のコンデンサを非駆動状態とし
前記ＬＷ波受信時に駆動状態となすＭＷ−ＬＷ切
換スイツチとを具備してなることを特徴とする簡
易形ＭＷ−ＬＷ受信切換回路。 a first coil for MW wave tuning;
a second coil for W wave tuning; a MW correction capacitor connected in parallel to the first and second coils; an LW correction capacitor connected in parallel to the second coil;
The first capacitor that performs LW oscillation operation and M
An oscillating unit in which a second capacitor that performs an oscillation operation for W is connected in parallel, and a connection point between the first and second coils is connected to one fixed end, and one end of the first capacitor is connected to the other fixed end. an MW-LW changeover switch connected to an end of the switch, which causes the second coil, the LW correction capacitor, and the first capacitor to be in a non-driven state when the MW wave is received, and to be in a driven state when the LW wave is received; A simplified MW-LW reception switching circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14481884U JPH021960Y2 (en) | 1984-09-25 | 1984-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14481884U JPH021960Y2 (en) | 1984-09-25 | 1984-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160529U true JPS6160529U (en) | 1986-04-23 |
| JPH021960Y2 JPH021960Y2 (en) | 1990-01-18 |
Family
ID=30703082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14481884U Expired JPH021960Y2 (en) | 1984-09-25 | 1984-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021960Y2 (en) |
-
1984
- 1984-09-25 JP JP14481884U patent/JPH021960Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021960Y2 (en) | 1990-01-18 |
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