GB325329A - Improvements in or relating to electric pick-up devices for gramophones and the like - Google Patents

Improvements in or relating to electric pick-up devices for gramophones and the like

Info

Publication number
GB325329A
GB325329A GB3704228A GB3704228A GB325329A GB 325329 A GB325329 A GB 325329A GB 3704228 A GB3704228 A GB 3704228A GB 3704228 A GB3704228 A GB 3704228A GB 325329 A GB325329 A GB 325329A
Authority
GB
United Kingdom
Prior art keywords
gramophones
relating
devices
pick
coil
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
GB3704228A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB325329A publication Critical patent/GB325329A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

325,329. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Dec. 14, 1928. Gramophone pick-ups. - A pick-up device incorporates a condenser connected in parallel and a high ohmic resistance in series with the speech coil to eliminate needle scratch. The armature 13 is mounted inside the speech coil 14, which is connected to terminals 15, 16. The condenser 17 has a capacity such as to afford a low-impedance path to oscillations of frequencies greater than 5000 cycles per second. The coil may be wound with high-resistance wire.
GB3704228A 1928-11-15 1928-12-14 Improvements in or relating to electric pick-up devices for gramophones and the like Expired GB325329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL43693A NL31923C (en) 1928-11-15 1928-11-15

Publications (1)

Publication Number Publication Date
GB325329A true GB325329A (en) 1930-02-20

Family

ID=40757004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3704228A Expired GB325329A (en) 1928-11-15 1928-12-14 Improvements in or relating to electric pick-up devices for gramophones and the like

Country Status (5)

Country Link
BE (1) BE364616A (en)
DE (1) DE590912C (en)
FR (1) FR683519A (en)
GB (1) GB325329A (en)
NL (1) NL31923C (en)

Also Published As

Publication number Publication date
FR683519A (en) 1930-06-13
NL31923C (en) 1934-02-15
BE364616A (en) 1929-11-30
DE590912C (en) 1934-01-13

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