JPS5651001A - Pickup arm - Google Patents

Pickup arm

Info

Publication number
JPS5651001A
JPS5651001A JP12405979A JP12405979A JPS5651001A JP S5651001 A JPS5651001 A JP S5651001A JP 12405979 A JP12405979 A JP 12405979A JP 12405979 A JP12405979 A JP 12405979A JP S5651001 A JPS5651001 A JP S5651001A
Authority
JP
Japan
Prior art keywords
electromagnet
permanent magnet
force
pickup arm
stylus pressure
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.)
Pending
Application number
JP12405979A
Other languages
Japanese (ja)
Inventor
Harushige Nakagaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12405979A priority Critical patent/JPS5651001A/en
Publication of JPS5651001A publication Critical patent/JPS5651001A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase the easiness for the operation of pickup arm, by applying stylus pressure of pickup arm through the use of absorbing and repulsing force between an electromagnet and a permanent magnet and producing the outside force with a prescribed relation.
CONSTITUTION: A permanent magnet 13 is fitted to the rotating disc 12 fixed to the rotating shaft of a pickup arm 1 and an electromagnet 14 is provided corresponding to it. A permanent magnet 16 is fitted to one end of the arm 1 and an electromagnet 15 is provided corresponding to it. The coil for the electromagnets 14, 15 is suitably designed and when a current flows to the coil through a variable resistor 17 from a power supply 18, a stylus pressure is produced with the absorbing force between the permanent magnet 16 and the electromagnet 15 and the outside force proportional to the stylus pressure is given with a repulsing force between the permanent magnet 13 and the electromagnet 14. The forces can be adjusted with the variable resistor 17. Accordingly, the construction is simple and the easiness of the operation can be improved.
COPYRIGHT: (C)1981,JPO&Japio
JP12405979A 1979-09-28 1979-09-28 Pickup arm Pending JPS5651001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12405979A JPS5651001A (en) 1979-09-28 1979-09-28 Pickup arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12405979A JPS5651001A (en) 1979-09-28 1979-09-28 Pickup arm

Publications (1)

Publication Number Publication Date
JPS5651001A true JPS5651001A (en) 1981-05-08

Family

ID=14875943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12405979A Pending JPS5651001A (en) 1979-09-28 1979-09-28 Pickup arm

Country Status (1)

Country Link
JP (1) JPS5651001A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2459273A (en) * 2008-04-15 2009-10-21 Eric Leonard Vant Magnetic tone arm balance mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2459273A (en) * 2008-04-15 2009-10-21 Eric Leonard Vant Magnetic tone arm balance mechanism

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