JPH033830U - - Google Patents
Info
- Publication number
- JPH033830U JPH033830U JP6506889U JP6506889U JPH033830U JP H033830 U JPH033830 U JP H033830U JP 6506889 U JP6506889 U JP 6506889U JP 6506889 U JP6506889 U JP 6506889U JP H033830 U JPH033830 U JP H033830U
- Authority
- JP
- Japan
- Prior art keywords
- series
- filter circuit
- diode
- filter
- circuit
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Filters And Equalizers (AREA)
Description
第１図および第２図は、この考案の一実施例の
回路図面、第３図は従来例の作用説明図、第４図
は従来例の回路図面、第５図は無線受信機の受信
部ブロツク図である。
Ｌ，Ｃ……リアクタンス素子、５……ローパス
フイルタ、６……フイルタ切換回路、ＤＡ……ダ
イオード、ＶＢ……順電圧、ＶＢ′……逆電圧。
1 and 2 are circuit diagrams of an embodiment of this invention, FIG. 3 is an explanatory diagram of the operation of a conventional example, FIG. 4 is a circuit diagram of a conventional example, and FIG. 5 is a receiving section of a wireless receiver. It is a block diagram. L, C...Reactance element, 5...Low pass filter, 6...Filter switching circuit, DA...Diode, VB...Forward voltage, VB'...Reverse voltage.
Claims (1)
成するフイルタ回路において、直列および並列に
接続したリアクタンス素子の接続点に、直列リア
クタンス素子と直列にダイオードを接続し、該ダ
イオードに順電圧あるいは逆電圧を印加するフイ
ルタ切り換え回路を備えたことを特徴としたフイ
ルタ回路。 (2) 請求項(1)に係るフイルタ回路において、前
記フイルタ回路を後段の増幅回路に接続したこと
を特徴としたフイルタ回路。[Claims for Utility Model Registration] (1) In a filter circuit composed of series and parallel reactance elements, a diode is connected in series with the series reactance element at the connection point of the series and parallel reactance elements, and A filter circuit characterized by being equipped with a filter switching circuit that applies a forward voltage or reverse voltage to a diode. (2) The filter circuit according to claim (1), wherein the filter circuit is connected to a downstream amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6506889U JPH033830U (en) | 1989-06-02 | 1989-06-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6506889U JPH033830U (en) | 1989-06-02 | 1989-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033830U true JPH033830U (en) | 1991-01-16 |
Family
ID=31596569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6506889U Pending JPH033830U (en) | 1989-06-02 | 1989-06-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033830U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6025227B2 (en) * | 1981-06-16 | 1985-06-17 | 古河電気工業株式会社 | How to form metal pipe weld connections |
| JPS62131616A (en) * | 1985-12-04 | 1987-06-13 | Hitachi Ltd | filter circuit |
-
1989
- 1989-06-02 JP JP6506889U patent/JPH033830U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6025227B2 (en) * | 1981-06-16 | 1985-06-17 | 古河電気工業株式会社 | How to form metal pipe weld connections |
| JPS62131616A (en) * | 1985-12-04 | 1987-06-13 | Hitachi Ltd | filter circuit |