GB147945A - Sound transmitting arrangement - Google Patents

Sound transmitting arrangement

Info

Publication number
GB147945A
GB147945A GB20000/20A GB2000020A GB147945A GB 147945 A GB147945 A GB 147945A GB 20000/20 A GB20000/20 A GB 20000/20A GB 2000020 A GB2000020 A GB 2000020A GB 147945 A GB147945 A GB 147945A
Authority
GB
United Kingdom
Prior art keywords
transmitter
frequency
depression
tuned
resonance
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
GB20000/20A
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Publication of GB147945A publication Critical patent/GB147945A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Control Of Eletrric Generators (AREA)
  • Selective Calling Equipment (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

147,945. Signal Ges. Aug. 12, 1918, [Convention date]. Subaqueous audible signals. - The alternator supply circuit of an electro-magnetic sound-transmitter, especially for subaqueous signalling, is tuned to the working frequency, which is also the natural frequency of the transmitter, by a condenser 9. This enables a smaller machine to be used, and either broader resonance is obtained or else, by constructing the transmitter to have less than the normal mechanical damping, greater efficiency is obtained with the normal breadth of resonance. The power curve of the arrangement with relation to frequency is of the form shown in Fig. 2, with a depression at the tuned frequency, and by working on an ascending portion of this depression the alternator runs with good speedstability. The transmitter is polarized by a direct-current winding in a circuit 6, 7.
GB20000/20A 1918-07-11 1920-07-09 Sound transmitting arrangement Expired GB147945A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE148416X 1918-07-11
DE348127T 1918-08-13

Publications (1)

Publication Number Publication Date
GB147945A true GB147945A (en) 1921-09-08

Family

ID=33491276

Family Applications (2)

Application Number Title Priority Date Filing Date
GB20000/20A Expired GB147945A (en) 1918-07-11 1920-07-09 Sound transmitting arrangement
GB20361/20A Expired GB148416A (en) 1918-07-11 1920-07-10 Sound transmitting arrangement

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB20361/20A Expired GB148416A (en) 1918-07-11 1920-07-10 Sound transmitting arrangement

Country Status (3)

Country Link
DE (1) DE348127C (en)
FR (1) FR519397A (en)
GB (2) GB147945A (en)

Also Published As

Publication number Publication date
GB148416A (en) 1921-09-29
DE348127C (en) 1922-01-31
FR519397A (en) 1921-06-09

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