GB1508714A - Tunable band-stop filter with variable attenuation - Google Patents

Tunable band-stop filter with variable attenuation

Info

Publication number
GB1508714A
GB1508714A GB1316776A GB1316776A GB1508714A GB 1508714 A GB1508714 A GB 1508714A GB 1316776 A GB1316776 A GB 1316776A GB 1316776 A GB1316776 A GB 1316776A GB 1508714 A GB1508714 A GB 1508714A
Authority
GB
United Kingdom
Prior art keywords
inductor
inductors
coupling
circuit
shaft
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.)
Expired
Application number
GB1316776A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1508714A publication Critical patent/GB1508714A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel LC in series path

Landscapes

  • Filters And Equalizers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB1316776A 1975-04-04 1976-04-01 Tunable band-stop filter with variable attenuation Expired GB1508714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7504004A NL176728C (nl) 1975-04-04 1975-04-04 Afstembaar bandfilter met regelbare onderdrukking.

Publications (1)

Publication Number Publication Date
GB1508714A true GB1508714A (en) 1978-04-26

Family

ID=19823512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1316776A Expired GB1508714A (en) 1975-04-04 1976-04-01 Tunable band-stop filter with variable attenuation

Country Status (7)

Country Link
JP (1) JPS51123039A (US06262066-20010717-C00315.png)
DE (1) DE2613990C2 (US06262066-20010717-C00315.png)
ES (1) ES446630A1 (US06262066-20010717-C00315.png)
FR (1) FR2306572A1 (US06262066-20010717-C00315.png)
GB (1) GB1508714A (US06262066-20010717-C00315.png)
IT (1) IT1057827B (US06262066-20010717-C00315.png)
NL (1) NL176728C (US06262066-20010717-C00315.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2446188A (en) * 2007-02-01 2008-08-06 Blackstar Amplification Ltd Variable middle- or centre-dip frequency for an audio equalizer/amplifier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682837B1 (fr) * 1991-10-17 1994-01-07 Electricite De France Circuit separateur-coupleur directif pour courants porteurs a frequence moyenne sur ligne electrique a basse tension.
KR102233949B1 (ko) * 2018-11-16 2021-03-31 주식회사 루트로닉 질관 치료장치용 에너지 전달 모듈, 이를 포함하는 질관 치료장치의 제어방법

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932435A (en) * 1931-12-15 1933-10-31 Bell Telephone Labor Inc Transmission network
GB390926A (en) * 1932-02-16 1933-04-20 Carl Fichlander Improvements in electrical coupling arrangements for thermionic valve amplifiers
NL39540C (US06262066-20010717-C00315.png) * 1933-01-30
DE691813C (de) * 1936-11-24 1940-06-06 Bernd Meininghaus Resonanzkurve
US2187340A (en) * 1937-07-24 1940-01-16 Telefunken Gmbh Means adapted to regulate the band width
FR857456A (fr) * 1938-08-12 1940-09-14 Schaub Appbau Gmbh Régulateur radio-électrique de largeur de bande de longueurs d'onde
DE938388C (de) * 1943-03-10 1956-01-26 Siemens Ag Hochfrequenzbandfilter aus drei gekoppelten Kreisen mit Bandbreiten-aenderung durch gegenseitige Verschiebung der Kopplungsspulen
NL65491C (US06262066-20010717-C00315.png) * 1943-08-09 1900-01-01
US2694150A (en) * 1951-06-29 1954-11-09 Avco Mfg Corp Combined very-high-frequency and ultra-high-frequency tuner for television receivers
FR2075595A5 (US06262066-20010717-C00315.png) * 1970-01-19 1971-10-08 Cselt Centro Studi Lab Telecom
DE2148038C3 (de) * 1971-09-25 1978-12-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Bandsperrenfilter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2446188A (en) * 2007-02-01 2008-08-06 Blackstar Amplification Ltd Variable middle- or centre-dip frequency for an audio equalizer/amplifier
GB2446188B (en) * 2007-02-01 2011-07-27 Blackstar Amplification Ltd Audio amplifier

Also Published As

Publication number Publication date
FR2306572A1 (fr) 1976-10-29
JPS566722B2 (US06262066-20010717-C00315.png) 1981-02-13
JPS51123039A (en) 1976-10-27
DE2613990C2 (de) 1983-06-01
NL176728C (nl) 1985-05-17
IT1057827B (it) 1982-03-30
ES446630A1 (es) 1977-06-16
NL7504004A (nl) 1976-10-06
FR2306572B1 (US06262066-20010717-C00315.png) 1982-05-07
DE2613990A1 (de) 1976-10-14
NL176728B (nl) 1984-12-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee