GB1523153A - Stereophonic pickup cartridge - Google Patents

Stereophonic pickup cartridge

Info

Publication number
GB1523153A
GB1523153A GB3246775A GB3246775A GB1523153A GB 1523153 A GB1523153 A GB 1523153A GB 3246775 A GB3246775 A GB 3246775A GB 3246775 A GB3246775 A GB 3246775A GB 1523153 A GB1523153 A GB 1523153A
Authority
GB
United Kingdom
Prior art keywords
disc
polepieces
rod portion
disc portion
polepiece
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
GB3246775A
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.)
Nippon Atsudenki KK
Original Assignee
Nippon Atsudenki 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
Application filed by Nippon Atsudenki KK filed Critical Nippon Atsudenki KK
Publication of GB1523153A publication Critical patent/GB1523153A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Heads (AREA)

Abstract

1523153 Stereophonic pick-ups NIPPON ATSUDENKI KK 4 Aug 1975 [7 Sept 1974] 32467/75 Heading H4J A variable reluctance stereophonic pick-up has an armature having a rod portion 9 and a disc portion 14 each signal channel having an associated magnetic circuit with a polepiece 5(7) adjacent the rod portion 9 and a polepiece 6 (8) adjacent the disc portion 14. In Fig. 1 the rod portion 9, and/or the disc portion 14, is a permanent magnet and the polepieces 5 and 6, 7 and 8, are ¢-shaped magnetic circuits with coils 1, 2 and 3, 4. In Fig. 2 the rod portion and disc portion are magnetized by a permanent magnet 18 coupled through a bracket 17 at one end and to the polepieces at the other end. The flux branches through the polepieces 5, 6 and 7, 8 of each circuit and, as compared with Fig. 1, the disc 14' has tabs 15', 16', lying behind the poles 6 and 8 so that the branches work in antiphase. Damping is provided by members 12.
GB3246775A 1974-09-07 1975-08-04 Stereophonic pickup cartridge Expired GB1523153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10335074A JPS5130701A (en) 1974-09-07 1974-09-07 SUTEREOYOPITSUKUATSUPU

Publications (1)

Publication Number Publication Date
GB1523153A true GB1523153A (en) 1978-08-31

Family

ID=14351674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3246775A Expired GB1523153A (en) 1974-09-07 1975-08-04 Stereophonic pickup cartridge

Country Status (4)

Country Link
JP (1) JPS5130701A (en)
CA (1) CA1028628A (en)
DE (1) DE2530838C3 (en)
GB (1) GB1523153A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS534503A (en) * 1976-07-02 1978-01-17 Fidelity Research Mi type cartridge
JPS5358450U (en) * 1976-10-20 1978-05-18
JPS5350803A (en) * 1976-10-20 1978-05-09 Fidelity Research Mi cartridge
JPS542367U (en) * 1977-06-07 1979-01-09
JPS5915393B2 (en) * 1979-03-13 1984-04-09 キヤノン株式会社 Leakage current suppression method for printed wiring circuit networks

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL106582C (en) * 1957-10-30
US3077522A (en) * 1959-02-27 1963-02-12 Shure Bros Stereophonic pickup cartridge
CH478502A (en) * 1967-06-20 1969-09-15 Audio Technica Kk Pickup head for stereophonic record playback
US3761647A (en) 1968-08-14 1973-09-25 Audio Technica Kk Cartridge for detecting vibrations representing stereophonic sound
GB1332486A (en) * 1970-12-23 1973-10-03 Micro Seiki Co Ltd Moving coil type phonograph pickup cartridge

Also Published As

Publication number Publication date
DE2530838B2 (en) 1979-07-12
DE2530838A1 (en) 1976-03-18
JPS5130701A (en) 1976-03-16
JPS5130448B2 (en) 1976-09-01
CA1028628A (en) 1978-03-28
DE2530838C3 (en) 1988-03-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920804