JPS5482644A - Active filter - Google Patents

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Publication number
JPS5482644A
JPS5482644A JP15028477A JP15028477A JPS5482644A JP S5482644 A JPS5482644 A JP S5482644A JP 15028477 A JP15028477 A JP 15028477A JP 15028477 A JP15028477 A JP 15028477A JP S5482644 A JPS5482644 A JP S5482644A
Authority
JP
Japan
Prior art keywords
terminal
type circuit
resistor
capacitor
input terminal
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
JP15028477A
Other languages
Japanese (ja)
Inventor
Fumio Ando
Mitsuru Yamaura
Takumi Mitsugi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15028477A priority Critical patent/JPS5482644A/en
Publication of JPS5482644A publication Critical patent/JPS5482644A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain highly reliable band rejection by providing first and second T type circuits and an operational amplifier connected across a series connection of a resistor and a capacitor, then detecting the variation of supplied electric amount at the output side terminal.
CONSTITUTION: First T type circuit comprised of series resistors R and intermediate capacitor C1 and second T type circuit comprised of series capacitors C2 and intermediate resistor R2 are connected at the ends of series resistors and capacitors, then both joints are connected respectively to the second input terminal of an operational amplifier IC1 and to the input terminal where the electric amount is inputed, while the other terminal of capacitor C1 in the first T type circuit is connected to the first input terminal of IC1, then said output terminal is used to detect electrical variation while the other end of resistor R2 in second T type circuit is used as I/O common terminal. Consequently the circuitry is simplified and a film having band rejection characteristic advantageous in reliability can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP15028477A 1977-12-14 1977-12-14 Active filter Pending JPS5482644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15028477A JPS5482644A (en) 1977-12-14 1977-12-14 Active filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15028477A JPS5482644A (en) 1977-12-14 1977-12-14 Active filter

Publications (1)

Publication Number Publication Date
JPS5482644A true JPS5482644A (en) 1979-07-02

Family

ID=15493604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15028477A Pending JPS5482644A (en) 1977-12-14 1977-12-14 Active filter

Country Status (1)

Country Link
JP (1) JPS5482644A (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TRANSACTIONS O CIRCUIT THEORY=S45 *

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