JPS5514780A - Active filter - Google Patents

Active filter

Info

Publication number
JPS5514780A
JPS5514780A JP8804178A JP8804178A JPS5514780A JP S5514780 A JPS5514780 A JP S5514780A JP 8804178 A JP8804178 A JP 8804178A JP 8804178 A JP8804178 A JP 8804178A JP S5514780 A JPS5514780 A JP S5514780A
Authority
JP
Japan
Prior art keywords
input
amplifier
active filter
factor
level
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.)
Granted
Application number
JP8804178A
Other languages
Japanese (ja)
Other versions
JPS6117368B2 (en
Inventor
Katsuharu Mizumoto
Toshihide Hanada
Yasuo Kominami
Masahiro Yamamura
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.)
Hitachi Ltd
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic Corp
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 Hitachi Ltd, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP8804178A priority Critical patent/JPS5514780A/en
Publication of JPS5514780A publication Critical patent/JPS5514780A/en
Publication of JPS6117368B2 publication Critical patent/JPS6117368B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To ensure the steady operation for the active filter regardless of the transient state or the steady state by comparing the DC level of the input signal with the reference voltage and then varying the damping coefficient with control of the factor of the amplifier based on the level difference. CONSTITUTION:The input of in-phase amplifier 1 is applied to one input of comparator circuit 3, and reference voltage Vr to be applied to control circuit 2 is applied to the other input. And the output of circuit 3 is turned to the control signal to vary the factor of amplifier 1. Thus the DC level of input signal (e) is compared with voltage Vr, and the factor of amplifier 1 is controlled according to the level difference. Accordingly, the damping coefficient also varies. As a result, the steady operation is secured for the active filter regardless of the transient state or the steady state.
JP8804178A 1978-07-19 1978-07-19 Active filter Granted JPS5514780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8804178A JPS5514780A (en) 1978-07-19 1978-07-19 Active filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8804178A JPS5514780A (en) 1978-07-19 1978-07-19 Active filter

Publications (2)

Publication Number Publication Date
JPS5514780A true JPS5514780A (en) 1980-02-01
JPS6117368B2 JPS6117368B2 (en) 1986-05-07

Family

ID=13931733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8804178A Granted JPS5514780A (en) 1978-07-19 1978-07-19 Active filter

Country Status (1)

Country Link
JP (1) JPS5514780A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161712A (en) * 1980-05-17 1981-12-12 Sony Corp Filter circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6947336B2 (en) * 2019-04-12 2021-10-13 三菱電機株式会社 Mobile control system, mobile, and mobile system
KR102599963B1 (en) * 2022-01-03 2023-11-07 재단법인한국조선해양기자재연구원 Group-moving transporter for transporting large-area and heavy-duty structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161712A (en) * 1980-05-17 1981-12-12 Sony Corp Filter circuit

Also Published As

Publication number Publication date
JPS6117368B2 (en) 1986-05-07

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