FR1235889A - Appareil de transformation et de filtrage - Google Patents

Appareil de transformation et de filtrage

Info

Publication number
FR1235889A
FR1235889A FR805334A FR805334A FR1235889A FR 1235889 A FR1235889 A FR 1235889A FR 805334 A FR805334 A FR 805334A FR 805334 A FR805334 A FR 805334A FR 1235889 A FR1235889 A FR 1235889A
Authority
FR
France
Prior art keywords
transformation
filtering apparatus
filtering
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
FR805334A
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.)
Clevite Corp
Original Assignee
Clevite 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 Clevite Corp filed Critical Clevite Corp
Application granted granted Critical
Publication of FR1235889A publication Critical patent/FR1235889A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Power Engineering (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Compositions Of Oxide Ceramics (AREA)
FR805334A 1958-09-17 1959-09-17 Appareil de transformation et de filtrage Expired FR1235889A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US761522A US3051919A (en) 1958-09-17 1958-09-17 Filter-transformers

Publications (1)

Publication Number Publication Date
FR1235889A true FR1235889A (fr) 1960-07-08

Family

ID=25062466

Family Applications (1)

Application Number Title Priority Date Filing Date
FR805334A Expired FR1235889A (fr) 1958-09-17 1959-09-17 Appareil de transformation et de filtrage

Country Status (4)

Country Link
US (1) US3051919A (fr)
DE (1) DE1252330B (fr)
FR (1) FR1235889A (fr)
GB (1) GB878375A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176251A (en) * 1960-01-26 1965-03-30 Erie Resistor Corp Electromechanical tuned filter
FR1307476A (fr) * 1960-12-12 1962-10-26 U S Sonics Corp Amplificateur sélecteur de fréquences
US3189852A (en) * 1962-04-14 1965-06-15 Toko Radio Coil Kenkyusho Kk Electro-mechanical filters
US3189851A (en) * 1962-06-04 1965-06-15 Sonus Corp Piezoelectric filter
DE1278623B (de) * 1962-07-16 1968-09-26 Hermsdorf Keramik Veb Impedanztransformierendes keramisches Filter fuer Siebschaltungen
US3351875A (en) * 1962-12-20 1967-11-07 Collins Radio Co Ring coupled mechanical filter
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
GB9817454D0 (en) * 1998-08-12 1998-10-07 Smiths Industries Plc Fluid-gauging systems
WO2012156818A2 (fr) * 2011-05-17 2012-11-22 Katardjiev Llia Interrupteur passif déclenché par radiofréquence à fonctionnalité d'identification

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923354A (en) * 1930-02-14 1933-08-22 Radio Patents Corp Selective circuits
US2276013A (en) * 1939-06-08 1942-03-10 Western Electric Co Apparatus for electrical transformation
US2343633A (en) * 1941-10-07 1944-03-07 Gen Electric Frequency measuring device
NL134514B (fr) * 1942-06-10
US2729708A (en) * 1951-02-02 1956-01-03 Rca Corp Band-pass amplifier systems
US2877432A (en) * 1957-01-08 1959-03-10 Clevite Corp Electromechanical filter elements

Also Published As

Publication number Publication date
US3051919A (en) 1962-08-28
GB878375A (en) 1961-09-27
DE1252330B (fr)

Similar Documents

Publication Publication Date Title
BE598332A (fr) Appareil de filtrage
FR1220344A (fr) Appareil de fermentation
FR1231295A (fr) Appareil envideur
FR1459712A (fr) Appareil de pulvérisation et de classement
FR1235889A (fr) Appareil de transformation et de filtrage
BE587326A (fr) Procédé et appareil de filtration.
BE584321A (fr) Appareil de compacification
FR1207913A (fr) Appareil de manutention
FR1246740A (fr) Appareil de réanimation perfectionné
FR1226944A (fr) Appareil de filtration
FR1249118A (fr) Appareil de filtration
FR1225696A (fr) Appareil de fragmentation et de brassage
FR1227560A (fr) Appareil de culture inter-ceps
FR1244697A (fr) Appareil titrométrique
FR1196478A (fr) Appareil de manutention
FR1229763A (fr) Appareil de filtrage
FR76848E (fr) Appareil de fragmentation et de brassage
FR1239590A (fr) Appareil médical
FR1212591A (fr) Appareil de décapage
FR1215487A (fr) Appareil de criblage
FR1231659A (fr) Appareil de gymnastique
BE584336A (fr) Appareil de radio-diagnostique
FR1138628A (fr) Appareil perfectionné de tamisage et filtrage
FR1238009A (fr) Procédé et appareil de filtrage et de tamisage
FR1207484A (fr) Procédé et appareil de plissage