KR900000890A - O-track position detection circuit of floppy disk driver - Google Patents

O-track position detection circuit of floppy disk driver Download PDF

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Publication number
KR900000890A
KR900000890A KR1019880008072A KR880008072A KR900000890A KR 900000890 A KR900000890 A KR 900000890A KR 1019880008072 A KR1019880008072 A KR 1019880008072A KR 880008072 A KR880008072 A KR 880008072A KR 900000890 A KR900000890 A KR 900000890A
Authority
KR
South Korea
Prior art keywords
floppy disk
position detection
voltage
disk driver
transistor
Prior art date
Application number
KR1019880008072A
Other languages
Korean (ko)
Inventor
장정환
Original Assignee
안시환
삼성전자 주식회사
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 안시환, 삼성전자 주식회사 filed Critical 안시환
Priority to KR1019880008072A priority Critical patent/KR900000890A/en
Publication of KR900000890A publication Critical patent/KR900000890A/en

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Abstract

내용 없음No content

Description

플로피 디스크 드라이버의 0트랙위치 검출회로Zero track position detection circuit of floppy disk driver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 실시회로도.1 is an exemplary circuit diagram of the present invention.

제2도(가)(나)는 광센서를 이용한 종래의 0트랙위치 검출장치의 구성도 및 회로도.2 (a) is a block diagram and circuit diagram of a conventional zero track position detection device using an optical sensor.

Claims (3)

헤드가 디스켓상의 0트랙에 위치되어 헤드 캐리지가 0트랙 바깥쪽에 위치한 스토퍼에 부딪힐 때 통상의 스텝모우터(5)에 흐르는 과전류를 검출하여 0트랙 검출신호를 발생시키는 감지부(6)를 통상의 스텝모우터 구동용 트랜지스터(Q1-Q4)의 에미터 공접단에 연결하여 구성한 것을 특징으로 하는 플로피 디스크 드라이버의 0트랙위치 검출회로.When the head is located at track 0 on the diskette and the head carriage hits the stopper located outside the track 0, the detection unit 6 which detects the overcurrent flowing through the normal step motor 5 and generates the 0 track detection signal is normally used. And a zero track position detection circuit of a floppy disk driver, characterized in that it is connected to the emitter junction of the step motor driving transistors Q 1 to Q 4 of the transistor. 제1항에 있어서, 감지부(6)를 스텝모우터 구동전류가 흐르도록 직렬연결시킨 분압저항(R1)(R2), 호울드 게이트 콘트롤신호에 의해 스위칭 제어되는 트랜지스터(Q5), 상기의 저항(R1)의 양단전압을 차동입력으로하고 저항(R2)의 양단전압이 상기의 트랜지스터(Q5)를 통해 그 기준전압으로 입력되는 전압비교기(OP) 및 기준전압지연용 콘덴서(C)로 구성한 것을 특징으로 하는 플로피디스크드라이버의 0트랙위치 검출회로.The transistor Q 5 according to claim 1, wherein the voltage dividing resistor R 1 (R 2 ) connected in series with the step motor driving current flows through the sensing unit 6, the transistor Q 5 controlled by the holder gate control signal. The voltage comparator OP and the reference voltage delay capacitor in which the voltage between both ends of the resistor R 1 is a differential input and the voltage between both ends of the resistor R 2 is input to the reference voltage through the transistor Q 5 . (C) The zero track position detection circuit of a floppy disk driver. 제1항 및 제2항에 있어서, 호울드 게이트 콘트롤신호가 스텝모우터(5)로 입력되는 스텝위상신호와 전압비교기(OP)의 출력을 낸드 조합시킨 신호인 것을 특징으로 하는 플로피디스크드라이버의 0트랙위치 검출신호.The floppy disk driver according to claim 1 or 2, wherein the holder gate control signal is a signal obtained by NAND combining a step phase signal input to the step motor 5 and an output of the voltage comparator OP. 0 Track position detection signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880008072A 1988-06-30 1988-06-30 O-track position detection circuit of floppy disk driver KR900000890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880008072A KR900000890A (en) 1988-06-30 1988-06-30 O-track position detection circuit of floppy disk driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880008072A KR900000890A (en) 1988-06-30 1988-06-30 O-track position detection circuit of floppy disk driver

Publications (1)

Publication Number Publication Date
KR900000890A true KR900000890A (en) 1990-01-31

Family

ID=68233843

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880008072A KR900000890A (en) 1988-06-30 1988-06-30 O-track position detection circuit of floppy disk driver

Country Status (1)

Country Link
KR (1) KR900000890A (en)

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