BE490715A - - Google Patents

Info

Publication number
BE490715A
BE490715A BE490715DA BE490715A BE 490715 A BE490715 A BE 490715A BE 490715D A BE490715D A BE 490715DA BE 490715 A BE490715 A BE 490715A
Authority
BE
Belgium
Application number
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.)
Publication of BE490715A publication Critical patent/BE490715A/xx

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
    • H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/025—Measuring arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Ceramic Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
BE490715D 1948-08-19 BE490715A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US700233XA 1948-08-19 1948-08-19

Publications (1)

Publication Number Publication Date
BE490715A true BE490715A (fr)

Family

ID=22092640

Family Applications (1)

Application Number Title Priority Date Filing Date
BE490715D BE490715A (fr) 1948-08-19

Country Status (6)

Country Link
BE (1) BE490715A (fr)
CH (1) CH275854A (fr)
DE (1) DE815493C (fr)
FR (1) FR992051A (fr)
GB (1) GB700233A (fr)
NL (1) NL73417C (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE949360C (de) * 1952-01-11 1956-09-20 Patra Patent Treuhand Elektrische Gasentladungslampe, insbesondere Leuchtstofflampe
DE1246897B (de) * 1959-09-09 1967-08-10 Itt Ind Ges Mit Beschraenkter Elektronische Festkoerperanordnung
NL267357A (fr) * 1960-07-28
GB1051550A (fr) * 1963-09-19
DE1239871B (de) * 1963-12-09 1967-05-03 Siemens Ag Druckempfindliche Halbleiteranordnung
DE1245425B (de) * 1965-06-23 1967-07-27 Telefunken Patent Elektromechanischer Wandler mit mechanisch empfindlichem Halbleiterbauelement

Also Published As

Publication number Publication date
NL73417C (fr)
FR992051A (fr) 1951-10-15
GB700233A (en) 1953-11-25
CH275854A (de) 1951-06-15
DE815493C (de) 1951-11-19

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