JPS58147324U - Dynamic filter circuit - Google Patents
Dynamic filter circuitInfo
- Publication number
- JPS58147324U JPS58147324U JP4189382U JP4189382U JPS58147324U JP S58147324 U JPS58147324 U JP S58147324U JP 4189382 U JP4189382 U JP 4189382U JP 4189382 U JP4189382 U JP 4189382U JP S58147324 U JPS58147324 U JP S58147324U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- filter circuit
- dynamic filter
- controlled variable
- variable capacitance
- 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
- Networks Using Active Elements (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図はこの考案の一実施例を示す回路図、第２図は第
１図におけるバラクタダイオードＤ１の逆方向印加電圧
−容量特性を示すグラフ、第３図は第１図におけるフィ
ルタ部の特性を入力信号の様々なレベルについて示した
図である。
１・・・信号源、２・・・フィルタ部、３．４・・・バ
ッファアンプ、５・・・レベル検出用整流回路、６・・
・ノイズ除去用ローパスフィルタ、Ｄｌ・・・電圧制御
可変容量素子（バラクタダイオード）。
第２図
第３図FIG. 1 is a circuit diagram showing an embodiment of this invention, FIG. 2 is a graph showing the reverse applied voltage-capacitance characteristics of the varactor diode D1 in FIG. 1, and FIG. 3 is the characteristic of the filter section in FIG. 1. FIG. 3 is a diagram showing various levels of input signals. DESCRIPTION OF SYMBOLS 1... Signal source, 2... Filter section, 3.4... Buffer amplifier, 5... Level detection rectifier circuit, 6...
- Low-pass filter for noise removal, Dl...voltage controlled variable capacitance element (varactor diode). Figure 2 Figure 3
Claims (1)
圧制御可変容量素子で構成し、かつこのコンデンサを前
記電圧制御可変容量素子の一端で基準電位に接続し、入
力信号のレベルに対応した電圧をこの電圧制御可変容量
素子に印加するようにしたことを特徴とするダイナミッ
クフィルタ回路。A part of the capacitor constituting the RCo-pass filter is composed of a voltage-controlled variable capacitance element, and one end of the voltage-controlled variable capacitance element is connected to a reference potential, and a voltage corresponding to the level of the input signal is applied to this capacitor. A dynamic filter circuit characterized in that a voltage is applied to a voltage controlled variable capacitance element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189382U JPS58147324U (en) | 1982-03-26 | 1982-03-26 | Dynamic filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189382U JPS58147324U (en) | 1982-03-26 | 1982-03-26 | Dynamic filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58147324U true JPS58147324U (en) | 1983-10-04 |
Family
ID=30053063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4189382U Pending JPS58147324U (en) | 1982-03-26 | 1982-03-26 | Dynamic filter circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58147324U (en) |
-
1982
- 1982-03-26 JP JP4189382U patent/JPS58147324U/en active Pending
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