JPS5843032U - filter circuit - Google Patents

filter circuit

Info

Publication number
JPS5843032U
JPS5843032U JP13712581U JP13712581U JPS5843032U JP S5843032 U JPS5843032 U JP S5843032U JP 13712581 U JP13712581 U JP 13712581U JP 13712581 U JP13712581 U JP 13712581U JP S5843032 U JPS5843032 U JP S5843032U
Authority
JP
Japan
Prior art keywords
filter circuit
reference potential
circuit
potential point
switching
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
Application number
JP13712581U
Other languages
Japanese (ja)
Inventor
生沢　豊
Original Assignee
株式会社東芝
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社東芝 filed Critical 株式会社東芝
Priority to JP13712581U priority Critical patent/JPS5843032U/en
Publication of JPS5843032U publication Critical patent/JPS5843032U/en
Pending legal-status Critical Current

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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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のフィルタ回路の回路図、第２図は本考案
のフィルタ回路の一実施例の回路図、第３図、第４図は
本考案の他の実施例の回路図である。 図中符号１は入力端子、２は出力端子、５，５′、５“
は増幅器、７はスイッチ回路、Ｒ１，Ｒ３は抵抗、Ｑ□
はトランジスタである。FIG. 1 is a circuit diagram of a conventional filter circuit, FIG. 2 is a circuit diagram of one embodiment of the filter circuit of the present invention, and FIGS. 3 and 4 are circuit diagrams of other embodiments of the present invention. In the figure, 1 is an input terminal, 2 is an output terminal, 5, 5', 5"
is an amplifier, 7 is a switch circuit, R1 and R3 are resistors, Q□
is a transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 増幅器の入力側と基準電位点との間を接続するコンデン
サと、帰還回路とを具備したフィルタ回路において、前
記コンデンサと前記基準電位点との間をオン、オフする
スイッチング手段を具備し、該スイッチング手段がオフ
とされたときフィルタ特性を広帯域とすべく前記帰還回
路を構成したことを特徴とするフィルタ回路。A filter circuit comprising a capacitor connected between an input side of an amplifier and a reference potential point, and a feedback circuit, comprising a switching means for turning on and off between the capacitor and the reference potential point, the switching A filter circuit characterized in that the feedback circuit is configured to have a wide band filter characteristic when the means is turned off.
JP13712581U 1981-09-17 1981-09-17 filter circuit Pending JPS5843032U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13712581U JPS5843032U (en) 1981-09-17 1981-09-17 filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13712581U JPS5843032U (en) 1981-09-17 1981-09-17 filter circuit

Publications (1)

Publication Number Publication Date
JPS5843032U true JPS5843032U (en) 1983-03-23

Family

ID=29930418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13712581U Pending JPS5843032U (en) 1981-09-17 1981-09-17 filter circuit

Country Status (1)

Country Link
JP (1) JPS5843032U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62269407A (en) * 1986-05-16 1987-11-21 Sony Corp Filtering device
JPH07210152A (en) * 1994-01-20 1995-08-11 Yamaha Corp Pedal timpani

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62269407A (en) * 1986-05-16 1987-11-21 Sony Corp Filtering device
JPH07210152A (en) * 1994-01-20 1995-08-11 Yamaha Corp Pedal timpani

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