GB139498A - Improvements in or connected with receivers for use in connection with signalling by sound waves - Google Patents

Improvements in or connected with receivers for use in connection with signalling by sound waves

Info

Publication number
GB139498A
GB139498A GB5740/20A GB574020A GB139498A GB 139498 A GB139498 A GB 139498A GB 5740/20 A GB5740/20 A GB 5740/20A GB 574020 A GB574020 A GB 574020A GB 139498 A GB139498 A GB 139498A
Authority
GB
United Kingdom
Prior art keywords
condenser
signalling
receivers
connection
sound waves
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
GB5740/20A
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
Publication of GB139498A publication Critical patent/GB139498A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

139,498. Pupin, M. I. Feb. 4, 1918, [Convention date]. Condenser telephones. - In apparatus for receiving ultra - audible high - frequency vibrations, particularly for subaqueous use, the receiver proper may be a diaphragm carrying a coil and vibrated in a strong magnetic field, or, as shown, may be condenser comprising an inner conductor 1 with an outer conducting sheath 3 separated by a layer of yielding insulating material such as Para rubber. Insulating end caps 4 are provided through which pass a lead 9 connected to conductor 1 and leads 10, 12 connected through external conducting rings 5 with the covering 3. In use, the condenser is connected, in parallel with a large condenser (not shown), to a source of E. M. F. and is immersed in the medium through which the vibrations are received.
GB5740/20A 1918-02-04 1920-02-25 Improvements in or connected with receivers for use in connection with signalling by sound waves Expired GB139498A (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
GB139498A true GB139498A (en) 1921-05-19

Family

ID=22802408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5740/20A Expired GB139498A (en) 1918-02-04 1920-02-25 Improvements in or connected with receivers for use in connection with signalling by sound waves

Country Status (3)

Country Link
US (1) US1561278A (en)
FR (3) FR507610A (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
FR507610A (en) 1920-09-20
FR507608A (en) 1920-09-20
FR507607A (en) 1920-09-20

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