JPS5454002A - Tone arm driving device - Google Patents

Tone arm driving device

Info

Publication number
JPS5454002A
JPS5454002A JP12072277A JP12072277A JPS5454002A JP S5454002 A JPS5454002 A JP S5454002A JP 12072277 A JP12072277 A JP 12072277A JP 12072277 A JP12072277 A JP 12072277A JP S5454002 A JPS5454002 A JP S5454002A
Authority
JP
Japan
Prior art keywords
tone arm
motor
drive
fed
potential
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
JP12072277A
Other languages
Japanese (ja)
Inventor
Hiromi Juso
Shigeki Tsuji
Eiji Yamazaki
Hiromichi Shiosaki
Takashi Yamaoka
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP12072277A priority Critical patent/JPS5454002A/en
Publication of JPS5454002A publication Critical patent/JPS5454002A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to stop a tone arm accurately at a designated position by providing a drive step for generating an output to reduce the power supply to a drive source so as to control the rotations of the tone arm.
CONSTITUTION: An output terminal B is connected through a base current limiting resistor R1 with the base of a transistor TRQ1, the emitter of which is grounded through a smoothing capacitor C1 to the earth and is connected with a+b power source through a tone arm driving motor M and a motor control resistor R2. When input signal are fed to the input terminal, a potential is established at a point A, and this potential is progressively elevated so that the r.p.m. of the motor M is decreased. When the moving speed of the tone arm is lowered until such input signals are fed as cannot render the TRQ1 conductive, the drive to the motor M is stopped together with the tone arm. Thus, it is possible to stop the tone arm accurately at a position which is previously designated
COPYRIGHT: (C)1979,JPO&Japio
JP12072277A 1977-10-06 1977-10-06 Tone arm driving device Pending JPS5454002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12072277A JPS5454002A (en) 1977-10-06 1977-10-06 Tone arm driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12072277A JPS5454002A (en) 1977-10-06 1977-10-06 Tone arm driving device

Publications (1)

Publication Number Publication Date
JPS5454002A true JPS5454002A (en) 1979-04-27

Family

ID=14793373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12072277A Pending JPS5454002A (en) 1977-10-06 1977-10-06 Tone arm driving device

Country Status (1)

Country Link
JP (1) JPS5454002A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55160366A (en) * 1979-05-31 1980-12-13 Victor Co Of Japan Ltd Conveyance drive system for reproducing element of video disk reproducing device
JPS569581U (en) * 1979-06-29 1981-01-27
JPS5856260A (en) * 1981-09-28 1983-04-02 Matsushita Electric Ind Co Ltd Tone arm speed control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55160366A (en) * 1979-05-31 1980-12-13 Victor Co Of Japan Ltd Conveyance drive system for reproducing element of video disk reproducing device
JPS569581U (en) * 1979-06-29 1981-01-27
JPS5856260A (en) * 1981-09-28 1983-04-02 Matsushita Electric Ind Co Ltd Tone arm speed control method

Similar Documents

Publication Publication Date Title
SE7409474L (en) ELECTRICAL CIRCUIT FOR CONTROL OF THE FUNCTION OF AN ELECTROMAGNETICALLY DRIVEN DEVICE
GB1279029A (en) Radar apparatus
JPS51132533A (en) Device for automatically raising and lowering window
JPS56121108A (en) Positioning method
JPS5246417A (en) Motor current limiter
JPS545337A (en) Semiconductor circuit
JPS5335918A (en) Speed controller of motor
JPS5239113A (en) Soft start circuit of motor
JPS5217179A (en) Servo motor control device
JPS56121890A (en) Liquid feeding device
JPS5290014A (en) Control device for motor with no commutator
JPS5419110A (en) Control circuit for small step motor
KR830001752A (en) Control circuit of positioning device by DC motor
JPS523988A (en) Servo motor control device
JPS5246423A (en) Control circuit of small-sized direct current motor
JPS5359811A (en) Control device of commutator-less motor
JPS5429010A (en) Rotational speed controller for dc motor
GB1142356A (en) Voltage-to-frequency transducers
JPS51121723A (en) Controlling device of chopper-controlled electric car
JPS55102907A (en) Acoustic amplifier
JPS53123826A (en) Motor speed controlling device
JPS52128122A (en) Ultrasonic oscillator
JPS5284835A (en) Control box for automatic door
JPS51144675A (en) Motor driving circuit of electronic clock
JPS5384115A (en) Drive control circuit for reversible motors with electronic damping circuits