JPS6423764U - - Google Patents

Info

Publication number
JPS6423764U
JPS6423764U JP11691887U JP11691887U JPS6423764U JP S6423764 U JPS6423764 U JP S6423764U JP 11691887 U JP11691887 U JP 11691887U JP 11691887 U JP11691887 U JP 11691887U JP S6423764 U JPS6423764 U JP S6423764U
Authority
JP
Japan
Prior art keywords
rotates
circuit
speed
rated rotation
magnetic disk
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
JP11691887U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP11691887U priority Critical patent/JPS6423764U/ja
Publication of JPS6423764U publication Critical patent/JPS6423764U/ja
Pending legal-status Critical Current

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Landscapes

  • Rotational Drive Of Disk (AREA)
  • Motor And Converter Starters (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例による磁気デイスク
装置の磁気デイスク媒体回転回路を示すブロツク
図、第２図は磁気デイスク媒体回転数、磁気デイ
スク媒体または磁気ヘツドの温度の起動後の時間
経過にともなう変化を示す図である。 １……スピンドルモータ、２……モータ駆動回
路、３……高速回転回路、４……定格回転回路、
５……起動制御回路。 FIG. 1 is a block diagram showing a magnetic disk medium rotation circuit of a magnetic disk device according to an embodiment of the present invention, and FIG. 2 shows changes in the rotation speed of the magnetic disk medium and the temperature of the magnetic disk medium or magnetic head over time after startup. FIG. 3 is a diagram showing accompanying changes. 1...Spindle motor, 2...Motor drive circuit, 3...High speed rotation circuit, 4...Rated rotation circuit,
5...Start control circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁気デイスク媒体を回転させるスピンドルモー
タ駆動回路をその定常状態において定格回転数で
回転させる定格回転回路と、前記定格回転数より
高速で回転させる高速回転回路と、起動時に高速
回転回路によりスピンドルモータを回転させて暖
気運転しその後定格回転回路に切り替えるように
作動する起動起動制御回路とを有することを特徴
とする磁記デイスク装置。 A rated rotation circuit that rotates a spindle motor drive circuit that rotates a magnetic disk medium at a rated rotation speed in its steady state, a high-speed rotation circuit that rotates at a higher speed than the rated rotation speed, and a high-speed rotation circuit that rotates the spindle motor at startup. What is claimed is: 1. A magnetic disk device comprising: a start-up control circuit that operates to perform a warm-up operation and then switch to a rated rotation circuit.
JP11691887U 1987-07-29 1987-07-29 Pending JPS6423764U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11691887U JPS6423764U (en) 1987-07-29 1987-07-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11691887U JPS6423764U (en) 1987-07-29 1987-07-29

Publications (1)

Publication Number Publication Date
JPS6423764U true JPS6423764U (en) 1989-02-08

Family

ID=31359896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11691887U Pending JPS6423764U (en) 1987-07-29 1987-07-29

Country Status (1)

Country Link
JP (1) JPS6423764U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076074A (en) * 1983-10-03 1985-04-30 Nec Corp Magnetic disk device
JPS6087468A (en) * 1983-10-19 1985-05-17 Hitachi Ltd Rotation controlling device of disk
JPS61170960A (en) * 1985-01-25 1986-08-01 Hitachi Ltd Magnetic disk device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076074A (en) * 1983-10-03 1985-04-30 Nec Corp Magnetic disk device
JPS6087468A (en) * 1983-10-19 1985-05-17 Hitachi Ltd Rotation controlling device of disk
JPS61170960A (en) * 1985-01-25 1986-08-01 Hitachi Ltd Magnetic disk device

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