FR661954A - Dispositif éjectrocapillaire fonctionnant comme microphone, téléphone et détecteur - Google Patents

Dispositif éjectrocapillaire fonctionnant comme microphone, téléphone et détecteur

Info

Publication number
FR661954A
FR661954A FR661954DA FR661954A FR 661954 A FR661954 A FR 661954A FR 661954D A FR661954D A FR 661954DA FR 661954 A FR661954 A FR 661954A
Authority
FR
France
Prior art keywords
ejectrocapillary
microphone
telephone
detector
device functioning
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)
Inventor
Marius Latour
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 filed Critical
Application granted granted Critical
Publication of FR661954A publication Critical patent/FR661954A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/028—Microphones with a fluid as resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR661954D 1928-08-25 1928-10-10 Dispositif éjectrocapillaire fonctionnant comme microphone, téléphone et détecteur Expired FR661954A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1757775X 1928-08-25

Publications (1)

Publication Number Publication Date
FR661954A true FR661954A (fr) 1929-08-01

Family

ID=10889990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR661954D Expired FR661954A (fr) 1928-08-25 1928-10-10 Dispositif éjectrocapillaire fonctionnant comme microphone, téléphone et détecteur

Country Status (2)

Country Link
US (1) US1757775A (fr)
FR (1) FR661954A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK90575C (da) * 1955-02-23 1961-03-13 Christian Emil Jensen Apparat til omsætning af mekanisk bevægelse til elektriske spændingsvariationer.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22971E (en) * 1945-01-22 1948-02-10 Oliver W Storey Capillary transducer
US2431367A (en) * 1945-01-22 1947-11-25 Oliver W Storey Capillary electrometer apparatus
US2648726A (en) * 1949-09-02 1953-08-11 Harry C Warner Control device for electrical circuits
US2615940A (en) * 1949-10-25 1952-10-28 Williams Milton Electrokinetic transducing method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK90575C (da) * 1955-02-23 1961-03-13 Christian Emil Jensen Apparat til omsætning af mekanisk bevægelse til elektriske spændingsvariationer.

Also Published As

Publication number Publication date
US1757775A (en) 1930-05-06

Similar Documents

Publication Publication Date Title
FR661954A (fr) Dispositif éjectrocapillaire fonctionnant comme microphone, téléphone et détecteur
FR660570A (fr) Dispositif acoustique
FR32649E (fr) Dispositif électro-dynamique pouvant être employé comme microphone ou haut-parleur
FR665300A (fr) Dispositif pare-soleil
FR686148A (fr) Dispositif de palier réglable
FR656118A (fr) Dispositif tourne-feuille
FR716610A (fr) Dispositif de microphone
FR657511A (fr) Dispositif anti-éblouissant perfectionné
FR667373A (fr) Dispositif hydraulique
FR35665E (fr) Dispositif hydraulique
FR664025A (fr) Station téléphonique avec dispositif d'amplification
DK43461C (da) Anordning ved Telefonapparater med Højttaler og højfølsom Mikrofon.
AT131968B (de) Selbstkassierende Telephonsprechstelle.
FR668571A (fr) Dispositif détecteur
ES113392A1 (es) Un aparato telefónico y telegráfico portátil.
FR678315A (fr) Dispositif fumivore
ES110652A1 (es) Un aparato anunciador.
ES108470A1 (es) Un aparato anunciador.
ES106926A3 (es) Un aparato anunciador.
ES106498A1 (es) Un dispositivo telefónico impresionador fonográfico.
ES111359A1 (es) Mejoras en los repetidores telegráficos de puesta en marcha y detención.
FR35694E (fr) Dispositif pare-soleil
FR675200A (fr) Dispositif de publicité lumineuse, mobile et flamboyante
DK42292C (da) Mikrofon.
DK40995C (da) Mikrofon.