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GB666493A - An improved electro-dynamic oscillograph - Google Patents

An improved electro-dynamic oscillograph

Info

Publication number
GB666493A
GB666493A GB26403/48A GB2640348A GB666493A GB 666493 A GB666493 A GB 666493A GB 26403/48 A GB26403/48 A GB 26403/48A GB 2640348 A GB2640348 A GB 2640348A GB 666493 A GB666493 A GB 666493A
Authority
GB
United Kingdom
Prior art keywords
light
oscillograph
dynamic
improved electro
pole
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
GB26403/48A
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 GB666493A publication Critical patent/GB666493A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

666,493. Light valves. LAFFON Y SOTO, A., and SELGAS Y MARIN, E. DE. Oct. 11, 1948 [Nov. 19, 1947], No. 26403/48. Class 40 (iii). A light - modulating device comprises a light obturator 6 carried by a short-circuited moving coil system 3 which is suspended (by means not shown) for free axial movement in an annular air gap 11 between an annular magnetic pole 1 and a central magnetic core 5. Modulating current is supplied to coils 2 and 4 supported respectively by the pole and core concentrically and coaxially with the coil 3.
GB26403/48A 1947-11-19 1948-10-11 An improved electro-dynamic oscillograph Expired GB666493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES666493X 1947-11-19

Publications (1)

Publication Number Publication Date
GB666493A true GB666493A (en) 1952-02-13

Family

ID=8246011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26403/48A Expired GB666493A (en) 1947-11-19 1948-10-11 An improved electro-dynamic oscillograph

Country Status (1)

Country Link
GB (1) GB666493A (en)

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