FR938538A - Appareils à cristaux piézo-électriques - Google Patents

Appareils à cristaux piézo-électriques

Info

Publication number
FR938538A
FR938538A FR938538DA FR938538A FR 938538 A FR938538 A FR 938538A FR 938538D A FR938538D A FR 938538DA FR 938538 A FR938538 A FR 938538A
Authority
FR
France
Prior art keywords
piezoelectric crystal
crystal apparatus
piezoelectric
crystal
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
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR938538A publication Critical patent/FR938538A/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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Developing Agents For Electrophotography (AREA)
FR938538D 1946-03-28 1946-12-19 Appareils à cristaux piézo-électriques Expired FR938538A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US657886A US2458615A (en) 1946-03-28 1946-03-28 Piezoelectric crystal apparatus

Publications (1)

Publication Number Publication Date
FR938538A true FR938538A (fr) 1948-10-18

Family

ID=24639061

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938538D Expired FR938538A (fr) 1946-03-28 1946-12-19 Appareils à cristaux piézo-électriques

Country Status (7)

Country Link
US (1) US2458615A (en(2012))
BE (1) BE470165A (en(2012))
CH (1) CH263126A (en(2012))
DE (1) DE832164C (en(2012))
ES (1) ES177115A1 (en(2012))
FR (1) FR938538A (en(2012))
GB (1) GB631345A (en(2012))

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925502A (en) * 1956-12-21 1960-02-16 Philips Corp Piezo-electric quartz crystal of elongated shape

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309467A (en) * 1941-07-25 1943-01-26 Bell Telephone Labor Inc Rochelle salt piezoelectric crystal apparatus

Also Published As

Publication number Publication date
GB631345A (en) 1949-11-01
BE470165A (en(2012))
CH263126A (fr) 1949-08-15
ES177115A1 (es) 1947-04-16
US2458615A (en) 1949-01-11
DE832164C (de) 1952-02-21

Similar Documents

Publication Publication Date Title
FR933208A (fr) Perfectionnements aux appareils vibratoires
CH268039A (fr) Dispositif à cristal piézo-électrique.
FR951706A (fr) Régulateur à transducteur
FR974510A (fr) Contact à cristal
FR939913A (fr) Appareils à cristaux piezo-électriques
FR940717A (fr) Appareils gazifères à fermentation
FR947465A (fr) Appareil piezo-électrique
FR938538A (fr) Appareils à cristaux piézo-électriques
FR930077A (fr) Cristaux piézoélectriques
FR941286A (fr) Bilame à magnétostriction
FR939534A (fr) Contact à cristal
FR949895A (fr) Appareil à dessiner
FR924113A (fr) Monture à cristal piézo-électrique
FR988968A (fr) Détecteur à cristaux
FR946200A (fr) Appareil à dessiner
FR939044A (fr) Montures de cristaux piézo-électriques
CH258971A (fr) Dispositif à cristal piézoélectrique.
AT181624B (de) Piezoelektrisches Kristallelement
AT180955B (de) Piezoelektrisches Kristallelement
FR940483A (fr) Perfectionnements aux systèmes et appareils à cristaux piezo-électriques
FR949148A (fr) Perfectionnements aux appareils à dessiner
FR938016A (fr) Appareil piézo-électrique
FR936858A (fr) Appareil à acétylène
AU136518B2 (en) Piezoelectric crystal apparatus
FR942698A (fr) Chronographe à rattrapante