NL190498B - Variabel actief filter. - Google Patents

Variabel actief filter.

Info

Publication number
NL190498B
NL190498B NLAANVRAGE7907174,A NL7907174A NL190498B NL 190498 B NL190498 B NL 190498B NL 7907174 A NL7907174 A NL 7907174A NL 190498 B NL190498 B NL 190498B
Authority
NL
Netherlands
Prior art keywords
active filter
variable active
variable
filter
active
Prior art date
Application number
NLAANVRAGE7907174,A
Other languages
English (en)
Other versions
NL190498C (nl
NL7907174A (nl
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of NL7907174A publication Critical patent/NL7907174A/nl
Publication of NL190498B publication Critical patent/NL190498B/nl
Application granted granted Critical
Publication of NL190498C publication Critical patent/NL190498C/nl

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/54—Modifications of networks to reduce influence of variations of temperature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • 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
    • 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
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/16—Networks for phase shifting
    • H03H11/20—Two-port phase shifters providing an adjustable phase shift
NLAANVRAGE7907174,A 1978-09-26 1979-09-26 Variabel actief filter. NL190498C (nl)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP11824878 1978-09-26
JP11824878A JPS5545224A (en) 1978-09-26 1978-09-26 Filter circuit
JP11884578A JPS5545266A (en) 1978-09-26 1978-09-27 Filter circuit
JP11884578 1978-09-27

Publications (3)

Publication Number Publication Date
NL7907174A NL7907174A (nl) 1980-03-28
NL190498B true NL190498B (nl) 1993-10-18
NL190498C NL190498C (nl) 1994-03-16

Family

ID=26456214

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7907174,A NL190498C (nl) 1978-09-26 1979-09-26 Variabel actief filter.

Country Status (7)

Country Link
US (2) US4288754A (nl)
JP (2) JPS5545224A (nl)
CA (2) CA1128616A (nl)
DE (1) DE2938994C3 (nl)
FR (1) FR2437735B1 (nl)
GB (1) GB2033182B (nl)
NL (1) NL190498C (nl)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161711A (en) * 1980-05-17 1981-12-12 Sony Corp Filter circuit
US4404529A (en) * 1980-12-30 1983-09-13 Rossum David P Lowpass filter with electronic control of cutoff and resonance
JPS58161413A (ja) * 1982-03-18 1983-09-26 Sony Corp 多目的フイルタ
CA1215437A (en) * 1983-05-25 1986-12-16 Sony Corporation Variable frequency oscillating circuit
JPS60111515A (ja) * 1983-11-21 1985-06-18 Sony Corp ｎ次フイルタ装置
DE3408220A1 (de) * 1984-03-07 1985-09-12 Telefunken electronic GmbH, 7100 Heilbronn Steuerbarer integrator
US4575687A (en) * 1984-10-01 1986-03-11 Gould Inc. Voltage adjustable capacitance for frequency response shaping
JPH0738557B2 (ja) * 1985-03-29 1995-04-26 ソニー株式会社 アクテイブフイルタ−回路
US5024221A (en) * 1985-05-17 1991-06-18 Siemens-Pacesetter, Inc. Programmable band-pass amplifier for use with implantable medical device
US4926139A (en) * 1986-03-12 1990-05-15 Beltone Electronics Corporation Electronic frequency filter
GB8608087D0 (en) * 1986-04-02 1986-05-08 Plessey Co Plc Variable resistors
GB8608875D0 (en) * 1986-04-11 1986-05-14 Plessey Co Plc Bandwidth filters
JPH0681317B2 (ja) * 1986-06-16 1994-10-12 株式会社日立製作所 色同期回路
JPH0821831B2 (ja) * 1987-02-06 1996-03-04 株式会社日立製作所 積分回路
SE457922B (sv) * 1987-06-18 1989-02-06 Ericsson Telefon Ab L M Anordning vid aktivt filter samt anvaendning daerav
US4843343A (en) * 1988-01-04 1989-06-27 Motorola, Inc. Enhanced Q current mode active filter
US4825173A (en) * 1988-01-18 1989-04-25 Motorola, Inc. High gain, programmable differential amplifier circuitry
US4881043A (en) * 1988-09-12 1989-11-14 Motorola, Inc. Variable gain transconductance amplifier and variable bandwidth filter
EP0375790A1 (de) * 1988-10-13 1990-07-04 Siemens Aktiengesellschaft Integrierbare Filterschaltung
US5157559A (en) * 1989-04-26 1992-10-20 Vtc Inc. Adjustable bandwidth differentiating amplifier for a magnetic disk drive
GB2234643B (en) * 1989-08-02 1993-07-14 Plessey Co Plc Frequency modulator
US5214002A (en) * 1989-10-25 1993-05-25 Agency Of Industrial Science And Technology Process for depositing a thermal CVD film of Si or Ge using a hydrogen post-treatment step and an optional hydrogen pre-treatment step
DE3938760A1 (de) * 1989-11-23 1991-05-29 Telefunken Electronic Gmbh Abstimmbarer resonanzverstaerker oder oszillator
US5225790A (en) * 1992-02-28 1993-07-06 Digital Equipment Corporation Tunable wideband active filter
JPH0832406A (ja) * 1994-05-12 1996-02-02 Hitachi Ltd 電圧制御フィルタ回路及び信号処理用半導体集積回路装置並びにそれを用いた信号読み取りシステム
GB2298982B (en) * 1995-03-15 1998-11-18 Plessey Semiconductors Ltd Controllable filter arrangement
US5673003A (en) * 1996-03-29 1997-09-30 Motorola, Inc. Amplifier circuit having a variable bandwidth
US6114904A (en) * 1997-10-27 2000-09-05 Sgs-Thomson Microelectronics S.A. Fast amplifier output stage
GB9919550D0 (en) * 1999-08-19 1999-10-20 Zetex Plc Electric circuit
US6753705B1 (en) * 2000-07-27 2004-06-22 Sigmatel, Inc. Edge sensitive detection circuit
US7154331B2 (en) * 2004-06-29 2006-12-26 Intel Corporation Adapting operational amplifier frequency response respective to closed loop gain
US7358799B2 (en) * 2005-04-13 2008-04-15 Finisar Corporation Switchable high pass configuration and an optical receiver with a switchable high pass configuration
US20080150626A1 (en) * 2006-12-21 2008-06-26 Northrop Grumman Systems Corporation Time variant filter with reduced settling time
US7975392B1 (en) * 2010-03-10 2011-07-12 National Oilwell Varco, L.P. Downhole tool
JP5524678B2 (ja) * 2010-03-31 2014-06-18 旭化成エレクトロニクス株式会社 再帰型フィルタ回路
DE102010042013A1 (de) 2010-10-06 2012-04-12 Robert Bosch Gmbh Verfahren zur Einstellung einer Temperatur eines Sensorelements
RU2468506C1 (ru) * 2011-10-12 2012-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Избирательный усилитель
RU2469464C1 (ru) * 2011-10-14 2012-12-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Избирательный усилитель

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614478A (en) * 1969-07-30 1971-10-19 Peter Schiff Highly selective filter circuit
US3743764A (en) * 1972-05-18 1973-07-03 Rca Corp Electronic phase shifting apparatus
US3969682A (en) * 1974-10-21 1976-07-13 Oberheim Electronics Inc. Circuit for dynamic control of phase shift
DE2552517C3 (de) * 1975-11-22 1979-06-07 Te Ka De Felten & Guilleaume Fernmeldeanlagen Gmbh, 8500 Nuernberg Umschaltbares Filter
JPS5277558A (en) * 1975-12-24 1977-06-30 Hitachi Ltd Variable resistance circuit

Also Published As

Publication number Publication date
NL190498C (nl) 1994-03-16
GB2033182A (en) 1980-05-14
FR2437735A1 (fr) 1980-04-25
FR2437735B1 (fr) 1987-12-24
JPS5545266A (en) 1980-03-29
CA1119261A (en) 1982-03-02
JPS6155806B2 (nl) 1986-11-29
CA1128616A (en) 1982-07-27
JPS5545224A (en) 1980-03-29
US4288754A (en) 1981-09-08
DE2938994C2 (de) 1993-11-04
US4306198A (en) 1981-12-15
DE2938994C3 (de) 1998-07-09
DE2938994A1 (de) 1980-04-17
JPS6148290B2 (nl) 1986-10-23
NL7907174A (nl) 1980-03-28
GB2033182B (en) 1983-01-19

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Lapsed because of reaching the maximum lifetime of a patent

Free format text: 19990926