GB647152A - Improvements in electronic transducers - Google Patents

Improvements in electronic transducers

Info

Publication number
GB647152A
GB647152A GB28496/47A GB2849647A GB647152A GB 647152 A GB647152 A GB 647152A GB 28496/47 A GB28496/47 A GB 28496/47A GB 2849647 A GB2849647 A GB 2849647A GB 647152 A GB647152 A GB 647152A
Authority
GB
United Kingdom
Prior art keywords
valve
movable electrode
ups
microphones
oct
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
GB28496/47A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB647152A publication Critical patent/GB647152A/en
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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/08—Tubes with a single discharge path having electrostatic control means only with movable electrode or electrodes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB28496/47A 1946-10-31 1947-10-24 Improvements in electronic transducers Expired GB647152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US706967A US2491390A (en) 1946-10-31 1946-10-31 Electronic transducer

Publications (1)

Publication Number Publication Date
GB647152A true GB647152A (en) 1950-12-06

Family

ID=24839823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28496/47A Expired GB647152A (en) 1946-10-31 1947-10-24 Improvements in electronic transducers

Country Status (4)

Country Link
US (1) US2491390A (xx)
FR (1) FR954725A (xx)
GB (1) GB647152A (xx)
NL (1) NL71653C (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680779A (en) * 1949-05-06 1954-06-08 Rca Corp Communication compensation system for atmospheric pressure variation
US2666200A (en) * 1950-11-30 1954-01-12 Rca Corp Electronic transducer tube
US2983790A (en) * 1953-04-30 1961-05-09 Rca Corp Electronic sound absorber
US2809520A (en) * 1954-03-01 1957-10-15 Jr Joseph D Richard Fluid velocity measuring apparatus
US2974274A (en) * 1955-12-13 1961-03-07 Lindberg Secondary-emission cathode-ray tube and engine analyzer employing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142857A (en) * 1935-05-24 1939-01-03 Gen Electric Vacuum tube
US2165981A (en) * 1936-08-27 1939-07-11 Julian E Sampson Electronic phonograph pick-up

Also Published As

Publication number Publication date
FR954725A (xx) 1950-01-05
NL71653C (xx)
US2491390A (en) 1949-12-13

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