NL7504538A - Record player stereo pick-up cartridge - has needle projecting downward through opening in non-magnetic holder - Google Patents

Record player stereo pick-up cartridge - has needle projecting downward through opening in non-magnetic holder

Info

Publication number
NL7504538A
NL7504538A NL7504538A NL7504538A NL7504538A NL 7504538 A NL7504538 A NL 7504538A NL 7504538 A NL7504538 A NL 7504538A NL 7504538 A NL7504538 A NL 7504538A NL 7504538 A NL7504538 A NL 7504538A
Authority
NL
Netherlands
Prior art keywords
cartridge
opening
projecting downward
record player
needle
Prior art date
Application number
NL7504538A
Other languages
Dutch (nl)
Other versions
NL162813B (en
Original Assignee
Audio Technica Kk
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
Priority claimed from JP729069A external-priority patent/JPS5518961B1/ja
Priority claimed from NL6912364A external-priority patent/NL6912364A/xx
Application filed by Audio Technica Kk filed Critical Audio Technica Kk
Priority to NL7504538.A priority Critical patent/NL162813B/en
Publication of NL7504538A publication Critical patent/NL7504538A/en
Publication of NL162813B publication Critical patent/NL162813B/en

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
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

The cartridge has two magnetic armatures, located on either side of the horizontal rear part of the needle, at an angle to the needle axis, each acting in the air gap of an electromagnetic system. The armatures oscillate in accordance with the respective tracks of the stereo recording contacted by the needle, to provide magnetic field fluctuations, as in 1772685. The armatures are made from magnetic material with high permeability, with at least one permanent magnet within the cartridge for magnetising them.
NL7504538.A 1968-08-14 1975-04-16 ELECTROMAGNETIC GROOVE AND NEEDLE UNIT FOR SUCH GROOVE. NL162813B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7504538.A NL162813B (en) 1968-08-14 1975-04-16 ELECTROMAGNETIC GROOVE AND NEEDLE UNIT FOR SUCH GROOVE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP5740868 1968-08-14
JP729069A JPS5518961B1 (en) 1969-02-03 1969-02-03
NL6912364A NL6912364A (en) 1968-08-14 1969-08-14
NL7504538.A NL162813B (en) 1968-08-14 1975-04-16 ELECTROMAGNETIC GROOVE AND NEEDLE UNIT FOR SUCH GROOVE.

Publications (2)

Publication Number Publication Date
NL7504538A true NL7504538A (en) 1975-07-31
NL162813B NL162813B (en) 1980-01-15

Family

ID=27277550

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7504538.A NL162813B (en) 1968-08-14 1975-04-16 ELECTROMAGNETIC GROOVE AND NEEDLE UNIT FOR SUCH GROOVE.

Country Status (1)

Country Link
NL (1) NL162813B (en)

Also Published As

Publication number Publication date
NL162813B (en) 1980-01-15

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Legal Events

Date Code Title Description
P1 Automatically granted patents, except
R2W Refused after publication