FR507610A - High frequency sound wave receiver - Google Patents

High frequency sound wave receiver

Info

Publication number
FR507610A
FR507610A FR507610A FR507610DA FR507610A FR 507610 A FR507610 A FR 507610A FR 507610 A FR507610 A FR 507610A FR 507610D A FR507610D A FR 507610DA FR 507610 A FR507610 A FR 507610A
Authority
FR
France
Prior art keywords
high frequency
sound wave
frequency sound
wave receiver
receiver
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
FR507610A
Other languages
French (fr)
Inventor
Michael Idvorsky Pupin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR507610A publication Critical patent/FR507610A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
FR507610A 1918-02-04 1919-12-20 High frequency sound wave receiver Expired FR507610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US215294A US1561278A (en) 1918-02-04 1918-02-04 Wave signaling system

Publications (1)

Publication Number Publication Date
FR507610A true FR507610A (en) 1920-09-20

Family

ID=22802408

Family Applications (3)

Application Number Title Priority Date Filing Date
FR507608A Expired FR507608A (en) 1918-02-04 1919-12-20 High frequency sound wave receiver
FR507607A Expired FR507607A (en) 1918-02-04 1919-12-20 Improvements to multistage amplifiers for electrical oscillations
FR507610A Expired FR507610A (en) 1918-02-04 1919-12-20 High frequency sound wave receiver

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR507608A Expired FR507608A (en) 1918-02-04 1919-12-20 High frequency sound wave receiver
FR507607A Expired FR507607A (en) 1918-02-04 1919-12-20 Improvements to multistage amplifiers for electrical oscillations

Country Status (3)

Country Link
US (1) US1561278A (en)
FR (3) FR507608A (en)
GB (1) GB139498A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612603A (en) * 1951-12-15 1952-09-30 Sylvania Electric Prod Signal-to-noise ratio in pulse reception
US2757475A (en) * 1954-05-13 1956-08-07 Jacques I Pankove Sound-producing fish and game lure

Also Published As

Publication number Publication date
US1561278A (en) 1925-11-10
FR507608A (en) 1920-09-20
FR507607A (en) 1920-09-20
GB139498A (en) 1921-05-19

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