NL168668B - Filternetwerk, voorzien van een, een zwevende zelfin- ductie vormende schakeling. - Google Patents

Filternetwerk, voorzien van een, een zwevende zelfin- ductie vormende schakeling.

Info

Publication number: NL168668B
Authority: NL; Netherlands
Prior art keywords: filter network; switching self; induction shift; induction; shift
Prior art date: 1973-10-01

Application number

NL7412912.A

Other languages

English (en)

Other versions

NL168668C (nl

NL7412912A (nl

Original Assignee

Post Office

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.)

1973-10-01

Filing date

1974-10-01

Publication date

1981-11-16

1974-10-01 Application filed by Post Office filed Critical Post Office

1975-04-03 Publication of NL7412912A publication Critical patent/NL7412912A/nl

1981-11-16 Publication of NL168668B publication Critical patent/NL168668B/nl

1982-04-16 Application granted granted Critical

1982-04-16 Publication of NL168668C publication Critical patent/NL168668C/nl

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
- H03H11/0416—Frequency selective two-port networks using positive impedance converters
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
- H03H11/48—One-port networks simulating reactances
- H03H11/485—Simulating inductances using operational amplifiers

NLAANVRAGE7412912,A 1973-10-01 1974-10-01 Filternetwerk, voorzien van een, een zwevende zelfinductie vormende schakeling. NL168668C (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB4586073A GB1442163A (en)	1973-10-01	1973-10-01	Arrangement for simulating inductance and filter networks incorpo rating such improvements

Publications (3)

Publication Number	Publication Date
NL7412912A NL7412912A (nl)	1975-04-03
NL168668B true NL168668B (nl)	1981-11-16
NL168668C NL168668C (nl)	1982-04-16

Family

ID=10438875

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NLAANVRAGE7412912,A NL168668C (nl)	1973-10-01	1974-10-01	Filternetwerk, voorzien van een, een zwevende zelfinductie vormende schakeling.

Country Status (7)

Country	Link
US (1)	US3936777A (nl)
JP (1)	JPS5065155A (nl)
CA (1)	CA1011411A (nl)
DE (1)	DE2446688C3 (nl)
FR (1)	FR2247018B1 (nl)
GB (1)	GB1442163A (nl)
NL (1)	NL168668C (nl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1547362A (en) *	1975-03-24	1979-06-13	Post Office	Active amplitude equalizers
FR2310657A1 (fr) *	1975-05-06	1976-12-03	Ibm France	Transformateur a elements actifs
US4046960A (en) *	1975-12-31	1977-09-06	Veale John R	Audio fidelity frequency equalizer system
EP0024011B1 (de) *	1979-08-09	1983-08-31	Siemens Aktiengesellschaft	Elektrische Filterschaltung unter Verwendung von wenigstens einer simulierten Induktivität, die gesteuerte Schalter, Kondensatoren und Verstärker enthält
US4333157A (en) *	1980-06-25	1982-06-01	Gte Automatic Electric Laboratories, Inc.	Switched-capacitor floating-inductor simulation circuit
US4496859A (en) *	1982-09-30	1985-01-29	Barcus-Berry, Inc.	Notch filter system
US4663597A (en) *	1985-12-17	1987-05-05	Thielscher Electronic Gmbh	RC coupling filter, especially an input filter, for receivers of centralized ripple control systems
JP2609232B2 (ja) *	1986-09-04	1997-05-14	日本ヒューレット・パッカード株式会社	フローテイング駆動回路
JP3040035B2 (ja) *	1992-09-18	2000-05-08	ローム株式会社	中間周波増幅回路を備えた受信機
US6373573B1 (en)	2000-03-13	2002-04-16	Lj Laboratories L.L.C.	Apparatus for measuring optical characteristics of a substrate and pigments applied thereto

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3375451A (en) *	1965-06-17	1968-03-26	Nasa Usa	Adaptive tracking notch filter system
DE1512673B2 (de) *	1967-03-09	1970-10-01	Brown, Boveri & Cie Ag, 6800 Mannheim	Mehrstufiger Verstärker mit einem Gegenkopplungskreis über alle Stufen und zusätzlicher Gegenkopplung in mehreren Stufen
US3473142A (en) *	1967-12-13	1969-10-14	Automatic Elect Lab	Active parallel-t filter having separate feedback paths
US3517342A (en) *	1969-01-17	1970-06-23	Automatic Elect Lab	Circuit for simulating two mutually coupled inductors and filter stage utilizing the same
US3715680A (en) *	1971-07-29	1973-02-06	Bell Telephone Labor Inc	Active rc loss equalizer
US3767861A (en) *	1972-08-31	1973-10-23	Gte Automatic Electric Lab Inc	3 to 10 port conference circuit

1973
- 1973-10-01 GB GB4586073A patent/GB1442163A/en not_active Expired
1974
- 1974-09-27 US US05/509,968 patent/US3936777A/en not_active Expired - Lifetime
- 1974-09-30 DE DE2446688A patent/DE2446688C3/de not_active Expired
- 1974-09-30 CA CA210,367A patent/CA1011411A/en not_active Expired
- 1974-10-01 JP JP49113234A patent/JPS5065155A/ja active Pending
- 1974-10-01 NL NLAANVRAGE7412912,A patent/NL168668C/nl not_active IP Right Cessation
- 1974-10-01 FR FR7433020A patent/FR2247018B1/fr not_active Expired

Also Published As

Publication number	Publication date
FR2247018B1 (nl)	1978-08-11
DE2446688C3 (de)	1978-11-02
NL168668C (nl)	1982-04-16
GB1442163A (en)	1976-07-07
FR2247018A1 (nl)	1975-05-02
JPS5065155A (nl)	1975-06-02
DE2446688B2 (de)	1978-03-02
DE2446688A1 (de)	1975-04-17
NL7412912A (nl)	1975-04-03
CA1011411A (en)	1977-05-31
US3936777A (en)	1976-02-03

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Legal Events

Date	Code	Title	Description
1991-06-17	V1	Lapsed because of non-payment of the annual fee