JPS5843023U - Frequency characteristic variable circuit - Google Patents
Frequency characteristic variable circuitInfo
- Publication number
- JPS5843023U JPS5843023U JP13851781U JP13851781U JPS5843023U JP S5843023 U JPS5843023 U JP S5843023U JP 13851781 U JP13851781 U JP 13851781U JP 13851781 U JP13851781 U JP 13851781U JP S5843023 U JPS5843023 U JP S5843023U
- Authority
- JP
- Japan
- Prior art keywords
- output
- signal line
- frequency characteristic
- characteristic variable
- variable 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
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のＣＲ型フィルタを用いた周波数特性可変
回路の図、第２図は本考案の実施例の回路図、第３図及
び第４図は第２図の回路の各フィルタの周波数特性図、
第５図は第２図の回路の綜合特性図である。
主要部分の符号の説明、４・・・・・・第１のフィルタ
、５・・・・・・第２のフィルタ、６．７・・・・・・
利得可変型ア □ンプ、Ｒ□、Ｒ２・・・・・・抵抗
素子、Ｃ□、Ｃ２・・・・・・容量素子。Figure 1 is a diagram of a variable frequency characteristic circuit using a conventional CR type filter, Figure 2 is a circuit diagram of an embodiment of the present invention, and Figures 3 and 4 are the frequencies of each filter in the circuit of Figure 2. Characteristic diagram,
FIG. 5 is an integrated characteristic diagram of the circuit shown in FIG. 2. Explanation of symbols of main parts, 4...First filter, 5...Second filter, 6.7...
Variable gain amplifier □Amplifier, R□, R2...Resistive element, C□, C2...Capacitive element.
Claims (2)
ラインに印加された信号を入力とする利得可変型アンプ
及びこのアンプ出力と前記抵抗素子の出力との間に設け
られた第１の容量素子とからなる第１のフィルタ回路と
、信号ラインに直列挿入された第２の容量素子、この信
号ラインに印加された信号を入力とする利得可変型アン
プ及びこのアンプ出力と前記第２の容量素子の出力との
間に設けられた抵抗素子とからなる第２のフィルタ回路
とを有し、前記第１及び第２のフィルタ回路を縦続接続
してなることを特徴とする周波数特性可変回路。(1) A resistive element inserted in series in a signal line, a variable gain amplifier whose input is the signal applied to this signal line, and a first capacitor provided between the output of this amplifier and the output of the resistive element. a first filter circuit consisting of an element, a second capacitive element inserted in series in a signal line, a variable gain amplifier whose input is the signal applied to this signal line, an output of this amplifier, and the second capacitor. a second filter circuit comprising a resistive element provided between the output of the element and the output of the element, and the first and second filter circuits are connected in cascade.
ーダンス手段を介して縦続接続されていることを特徴と
する実用新案登録請求の範囲第１項記載の回路。(2) The circuit according to claim 1, wherein the first and second filter circuits are cascade-connected via high input impedance means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13851781U JPS5843023U (en) | 1981-09-18 | 1981-09-18 | Frequency characteristic variable circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13851781U JPS5843023U (en) | 1981-09-18 | 1981-09-18 | Frequency characteristic variable circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5843023U true JPS5843023U (en) | 1983-03-23 |
Family
ID=29931738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13851781U Pending JPS5843023U (en) | 1981-09-18 | 1981-09-18 | Frequency characteristic variable circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843023U (en) |
-
1981
- 1981-09-18 JP JP13851781U patent/JPS5843023U/en active Pending
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