FR818145A - Improvements to electric wave filters - Google Patents

Improvements to electric wave filters

Info

Publication number
FR818145A
FR818145A FR818145DA FR818145A FR 818145 A FR818145 A FR 818145A FR 818145D A FR818145D A FR 818145DA FR 818145 A FR818145 A FR 818145A
Authority
FR
France
Prior art keywords
electric wave
wave filters
filters
electric
wave
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
Other languages
French (fr)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR818145A publication Critical patent/FR818145A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
FR818145D 1936-02-21 1937-02-20 Improvements to electric wave filters Expired FR818145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5335/36A GB475490A (en) 1936-02-21 1936-02-21 Improvements in and relating to electric wave filters

Publications (1)

Publication Number Publication Date
FR818145A true FR818145A (en) 1937-09-18

Family

ID=9794168

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818145D Expired FR818145A (en) 1936-02-21 1937-02-20 Improvements to electric wave filters

Country Status (4)

Country Link
US (1) US2156656A (en)
DE (1) DE756014C (en)
FR (1) FR818145A (en)
GB (1) GB475490A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL84056C (en) * 1948-02-14
DE975947C (en) * 1952-02-16 1962-12-20 Telefunken Patent Circuit for changing the video bandwidth in television receivers
US2747138A (en) * 1952-10-24 1956-05-22 Bell Telephone Labor Inc Broad band amplifier devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE452495C (en) * 1927-11-14 Internat Western Electric Comp Chain ladder
FR742674A (en) * 1931-08-20 1933-03-13
US1587574A (en) * 1920-04-30 1926-06-08 American Telephone & Telegraph Doubly-periodic wave filter
GB142115A (en) * 1921-01-15 1921-01-13 Western Electric Co Ltd Electric wave filters
DE507825C (en) * 1928-04-04 1930-09-24 Radio Electr Soc Fr Sieve chain
US1925340A (en) * 1929-03-29 1933-09-05 Rca Corp Resistance coupled amplifier
US1918393A (en) * 1931-08-22 1933-07-18 American Telephone & Telegraph Amplifier of alternating currents
GB436734A (en) * 1934-04-17 1935-10-17 Alan Dower Blumlein Improvements in and relating to electrical amplifiers, such as may be used for example in television

Also Published As

Publication number Publication date
GB475490A (en) 1937-11-22
DE756014C (en) 1951-12-20
US2156656A (en) 1939-05-02

Similar Documents

Publication Publication Date Title
FR939393A (en) Improvements to electric wave filters
FR825438A (en) Improvements to radiobeacons
FR867291A (en) Electric wave filters
FR830897A (en) Filter refinements
FR835836A (en) Filter refinements
FR815901A (en) Electro-mechanical wave filters
FR772135A (en) Improvements to electric wave filters
FR863747A (en) Electric wave filters
FR791876A (en) Improvements to electric wave filters
FR818145A (en) Improvements to electric wave filters
FR796611A (en) Improvements to electric wave filters
FR844539A (en) Wave filters
FR838997A (en) Improvements to mechanical razors and trimmers
FR812074A (en) Improvements to electric wave filters
FR823802A (en) Improvements to electron multipliers
FR861831A (en) Electric wave filters
FR822164A (en) Improvements to electric capacitors
FR818227A (en) Filter refinements
FR830154A (en) Improvements to electron multipliers
FR839805A (en) Improvements to mechanical filters
FR807137A (en) Improvements to electric wave filters
FR824086A (en) Electric wave generators
FR829577A (en) Wave filter
FR822535A (en) Refinements to coupling transformers
FR48228E (en) Improvements to concentric conductors