ES337151A1 - A device to automatically stop the motor of an electronic phonographer. (Machine-translation by Google Translate, not legally binding) - Google Patents

A device to automatically stop the motor of an electronic phonographer. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES337151A1
ES337151A1 ES337151A ES337151A ES337151A1 ES 337151 A1 ES337151 A1 ES 337151A1 ES 337151 A ES337151 A ES 337151A ES 337151 A ES337151 A ES 337151A ES 337151 A1 ES337151 A1 ES 337151A1
Authority
ES
Spain
Prior art keywords
radiation
motor
control element
translation
disc
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
ES337151A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES337151A1 publication Critical patent/ES337151A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/14—Control of operating function, e.g. switching from recording to reproducing by sensing movement or position of head, e.g. means moving in correspondence with head movements

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

A device for automatically stopping the motor of an electric phonograph as a result of the larger pitch of the output grooves of the disc being played, comprising a control element coupled to the phonograph pickup arm and an electrical switch to stop the motor and it is driven by said control element, characterized in that it also includes a radiation source, an electric receiver sensitive to radiation from this source and a high-pass electric filter through which the electrical signal produced by the receiver acts on the switch electrical, the control element being designed to modulate the radiation from the radiation source as a function of the speed of movement of the pick-up arm in a radial direction with respect to the disc so that the electrical signal acts only on the electrical switch to a highest radial velocity of motion of the pickup arm, which the one that occurs when the needle follows the grooves of output of the reproduced disc, due to the consequent higher modulation frequency of the radiation emitted by the radiation source. (Machine-translation by Google Translate, not legally binding)
ES337151A 1966-02-24 1967-02-22 A device to automatically stop the motor of an electronic phonographer. (Machine-translation by Google Translate, not legally binding) Expired ES337151A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6602389A NL6602389A (en) 1966-02-24 1966-02-24

Publications (1)

Publication Number Publication Date
ES337151A1 true ES337151A1 (en) 1968-01-16

Family

ID=19795829

Family Applications (1)

Application Number Title Priority Date Filing Date
ES337151A Expired ES337151A1 (en) 1966-02-24 1967-02-22 A device to automatically stop the motor of an electronic phonographer. (Machine-translation by Google Translate, not legally binding)

Country Status (5)

Country Link
BE (1) BE694464A (en)
DE (1) DE1270300B (en)
ES (1) ES337151A1 (en)
FR (1) FR1512041A (en)
NL (1) NL6602389A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322422A1 (en) * 1975-08-29 1977-03-25 Mazoyer Jean Record player automatic switch off mechanism - has two detection elements incorporated in turntable and playback arm
FR2447586A1 (en) * 1979-01-26 1980-08-22 Thomson Brandt Automatic arrest of record player - employs plate on pick=up arm pivot to blank photo-detector circuit
DE3526422A1 (en) * 1985-07-24 1987-01-29 Thomson Brandt Gmbh SWITCH-OFF DEVICE FOR TURNTABLE

Also Published As

Publication number Publication date
DE1270300B (en) 1968-06-12
NL6602389A (en) 1967-08-25
FR1512041A (en) 1968-02-02
BE694464A (en) 1967-08-22

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