JPS5534825A - Starting motor - Google Patents

Starting motor

Info

Publication number
JPS5534825A
JPS5534825A JP10663378A JP10663378A JPS5534825A JP S5534825 A JPS5534825 A JP S5534825A JP 10663378 A JP10663378 A JP 10663378A JP 10663378 A JP10663378 A JP 10663378A JP S5534825 A JPS5534825 A JP S5534825A
Authority
JP
Japan
Prior art keywords
starting
current
motor
circuit
tape
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
JP10663378A
Other languages
Japanese (ja)
Inventor
Hiroaki Saijo
Eiji Tsukada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10663378A priority Critical patent/JPS5534825A/en
Publication of JPS5534825A publication Critical patent/JPS5534825A/en
Pending legal-status Critical Current

Links

Landscapes

  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To always obtain excellent reproduction of information records by starting a motor with a small current and then increasing the current, thereby preventing the slipping of tape and eliminating the difference between the actual running distance of the tape and the estimated movement distance of a tachometer.
CONSTITUTION: When a motor-starting signal is give, a signal is applied to a digital to analog converter DA from a first-starting current set-up circuit I1 until the time specified by a timer TM is elapsed, and a motor M is started by a constant- current driving circuit CID. After the specified time, a switching circuit CH1 is switched to a second starting current set-up circuit I2 (I2>I1), thereby the starting current is changed. When the tape running speed has reached the specified speed, a switching circuit CH2 is switched to get constant-speed control. The starting current can be made continuously variable.
COPYRIGHT: (C)1980,JPO&Japio
JP10663378A 1978-08-31 1978-08-31 Starting motor Pending JPS5534825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10663378A JPS5534825A (en) 1978-08-31 1978-08-31 Starting motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10663378A JPS5534825A (en) 1978-08-31 1978-08-31 Starting motor

Publications (1)

Publication Number Publication Date
JPS5534825A true JPS5534825A (en) 1980-03-11

Family

ID=14438507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10663378A Pending JPS5534825A (en) 1978-08-31 1978-08-31 Starting motor

Country Status (1)

Country Link
JP (1) JPS5534825A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031747U (en) * 1983-08-08 1985-03-04 パイオニア株式会社 Reel motor drive control circuit
JPS6318231U (en) * 1986-07-21 1988-02-06
JPS63279453A (en) * 1987-05-11 1988-11-16 Alps Electric Co Ltd Motor controller for tape player
EP1841054A2 (en) * 2006-03-31 2007-10-03 Thomson Licensing S.A. Method of servo-controlling the speed of an electric motor on start-up, and apparatus implementing the system.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239113A (en) * 1975-09-23 1977-03-26 Hitachi Koki Co Ltd Soft start circuit of motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239113A (en) * 1975-09-23 1977-03-26 Hitachi Koki Co Ltd Soft start circuit of motor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031747U (en) * 1983-08-08 1985-03-04 パイオニア株式会社 Reel motor drive control circuit
JPS6318231U (en) * 1986-07-21 1988-02-06
JPS63279453A (en) * 1987-05-11 1988-11-16 Alps Electric Co Ltd Motor controller for tape player
EP1841054A2 (en) * 2006-03-31 2007-10-03 Thomson Licensing S.A. Method of servo-controlling the speed of an electric motor on start-up, and apparatus implementing the system.
FR2899403A1 (en) * 2006-03-31 2007-10-05 Thomson Licensing Sa METHOD OF SERVING THE SPEED OF AN ELECTRIC MOTOR AT STARTING, AND APPARATUS IMPLEMENTING THE SYSTEM
US7567043B2 (en) 2006-03-31 2009-07-28 Thomson Licensing Method of servo controlling the speed of an electric motor on start-up, and apparatus implementing the system
EP1841054A3 (en) * 2006-03-31 2014-12-24 Thomson Licensing SA Method of servo-controlling the speed of an electric motor on start-up, and apparatus implementing the system.

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