EP0160279A3 - Improved grounding circuit for moving coil pickup cartridge - Google Patents

Improved grounding circuit for moving coil pickup cartridge Download PDF

Info

Publication number
EP0160279A3
EP0160279A3 EP85105095A EP85105095A EP0160279A3 EP 0160279 A3 EP0160279 A3 EP 0160279A3 EP 85105095 A EP85105095 A EP 85105095A EP 85105095 A EP85105095 A EP 85105095A EP 0160279 A3 EP0160279 A3 EP 0160279A3
Authority
EP
European Patent Office
Prior art keywords
moving coil
pickup cartridge
grounding circuit
coil pickup
improved grounding
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.)
Withdrawn
Application number
EP85105095A
Other languages
German (de)
French (fr)
Other versions
EP0160279A2 (en
Inventor
Hisayoshi Nakatsuka
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.)
Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel Co Ltd
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 JP1984062392U external-priority patent/JPS60174395U/en
Priority claimed from JP19861684U external-priority patent/JPS61113500U/ja
Application filed by Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Publication of EP0160279A2 publication Critical patent/EP0160279A2/en
Publication of EP0160279A3 publication Critical patent/EP0160279A3/en
Withdrawn legal-status Critical Current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
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals 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)
  • Moving Of Heads (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

A pickup cartridge of the moving coil type including a magnetic circuit having, in series, (a) an armature with which the coil is associated, (b) a pole-piece (c) a rear yoke, (d) a magnet, and (e) a front yoke. The improvement constitutes grounding magnetic circuit at either end part of the series magnetic circuit, the grounding point being on the front yoke farthest from the armature or on the surface of the armature.
EP85105095A 1984-04-27 1985-04-26 Improved grounding circuit for moving coil pickup cartridge Withdrawn EP0160279A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP62392/84U 1984-04-27
JP1984062392U JPS60174395U (en) 1984-04-27 1984-04-27 pick-up cartridge
JP198616/84U 1984-12-26
JP19861684U JPS61113500U (en) 1984-12-26 1984-12-26

Publications (2)

Publication Number Publication Date
EP0160279A2 EP0160279A2 (en) 1985-11-06
EP0160279A3 true EP0160279A3 (en) 1987-04-01

Family

ID=26403448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105095A Withdrawn EP0160279A3 (en) 1984-04-27 1985-04-26 Improved grounding circuit for moving coil pickup cartridge

Country Status (1)

Country Link
EP (1) EP0160279A3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846592A (en) * 1973-03-29 1974-11-05 W Stanton Phonograph pickup cartridge for four channel recordings
US3904837A (en) * 1972-10-19 1975-09-09 Hitachi Ltd Magnetic pickup cartridge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904837A (en) * 1972-10-19 1975-09-09 Hitachi Ltd Magnetic pickup cartridge
US3846592A (en) * 1973-03-29 1974-11-05 W Stanton Phonograph pickup cartridge for four channel recordings

Also Published As

Publication number Publication date
EP0160279A2 (en) 1985-11-06

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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PUAL Search report despatched

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Effective date: 19870805

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Effective date: 19890208

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19891208

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NAKATSUKA, HISAYOSHI