JPS558675A - Record player - Google Patents

Record player

Info

Publication number
JPS558675A
JPS558675A JP8222678A JP8222678A JPS558675A JP S558675 A JPS558675 A JP S558675A JP 8222678 A JP8222678 A JP 8222678A JP 8222678 A JP8222678 A JP 8222678A JP S558675 A JPS558675 A JP S558675A
Authority
JP
Japan
Prior art keywords
tone arm
output
set position
outputs
finger
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
JP8222678A
Other languages
Japanese (ja)
Inventor
Hideaki Hayashi
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 Columbia Co Ltd
Original Assignee
Nippon Columbia 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
Application filed by Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP8222678A priority Critical patent/JPS558675A/en
Priority to US06/048,894 priority patent/US4312061A/en
Priority to GB7923307A priority patent/GB2025089B/en
Priority to DE19792927395 priority patent/DE2927395A1/en
Publication of JPS558675A publication Critical patent/JPS558675A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to place a tone arm to an arbitrary tune position by comparing outputs corresponding to the rotation position and the set position of the tone arm with each other and stopping the tone arm at the position where both output agree with each other.
CONSTITUTION: Comparison amplifier circuit A1 where output a corresponding to the rotation position of tone arm 1 and output b of variable resistor VR1 which determines the set position of tone arm 1 are supplied outputs error output c corresponding to the difference between outputs a and b to drive motor 3. Then, at the set position, error output c becomes zero, and tone arm is controlled to stop. Consequently, tone arm 1 can be placed to a desired set position by rotating variable resistor VR1 by finger-screw 14; and when operator's hands are separated from finger-screw 14 at this position, a negative voltage is applied to motor 9, and tone arm 1 descends, so that the stylus tip of the cartridge can be brought to an arbitrary tube position.
COPYRIGHT: (C)1980,JPO&Japio
JP8222678A 1978-07-06 1978-07-06 Record player Pending JPS558675A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8222678A JPS558675A (en) 1978-07-06 1978-07-06 Record player
US06/048,894 US4312061A (en) 1978-07-06 1979-06-15 Record player
GB7923307A GB2025089B (en) 1978-07-06 1979-07-04 Positional control of record player tonearm
DE19792927395 DE2927395A1 (en) 1978-07-06 1979-07-06 TURNTABLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8222678A JPS558675A (en) 1978-07-06 1978-07-06 Record player

Publications (1)

Publication Number Publication Date
JPS558675A true JPS558675A (en) 1980-01-22

Family

ID=13768486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8222678A Pending JPS558675A (en) 1978-07-06 1978-07-06 Record player

Country Status (1)

Country Link
JP (1) JPS558675A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4978209A (en) * 1972-11-10 1974-07-27
EP1016570A2 (en) 1998-12-28 2000-07-05 Alpha Corporation Cylinder lock device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914247A (en) * 1972-05-20 1974-02-07
JPS4936913B1 (en) * 1970-01-21 1974-10-04
JPS49120604A (en) * 1973-03-20 1974-11-18

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4936913B1 (en) * 1970-01-21 1974-10-04
JPS4914247A (en) * 1972-05-20 1974-02-07
JPS49120604A (en) * 1973-03-20 1974-11-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4978209A (en) * 1972-11-10 1974-07-27
EP1016570A2 (en) 1998-12-28 2000-07-05 Alpha Corporation Cylinder lock device

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