JPH0197417U - - Google Patents

Info

Publication number
JPH0197417U
JPH0197417U JP8301888U JP8301888U JPH0197417U JP H0197417 U JPH0197417 U JP H0197417U JP 8301888 U JP8301888 U JP 8301888U JP 8301888 U JP8301888 U JP 8301888U JP H0197417 U JPH0197417 U JP H0197417U
Authority
JP
Japan
Prior art keywords
focus servo
field effect
effect transistor
servo device
servo amplifier
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.)
Granted
Application number
JP8301888U
Other languages
English (en)
Other versions
JPH0348727Y2 (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 JP8301888U priority Critical patent/JPH0348727Y2/ja
Publication of JPH0197417U publication Critical patent/JPH0197417U/ja
Application granted granted Critical
Publication of JPH0348727Y2 publication Critical patent/JPH0348727Y2/ja
Expired legal-status Critical Current

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Description

【図面の簡単な説明】
図は本考案の一実施例のブロツク図である。 １…バツフア増幅器、２…可変抵抗、３…対物
レンズ駆動用増幅器、６…ダイオード、８…電界
効果トランジスタ。

Claims (1)

  1. 【実用新案登録請求の範囲】 光学式デイスクプレーヤの対物レンズをデイス
    クに垂直な方向に移動させるフオーカスサーボ装
    置において、 該フオーカスサーボ装置のフオーカスサーボ用
    増幅器の入力とアース間に電界効果トランジスタ
    のドレイン・ソースを接続すると共に、該電界効
    果トランジスタのゲートに所定バイアス電圧を印
    加し、かつ、フオーカスサーボ用増幅器の出力に
    整流用ダイオードと平滑用コンデンサを接続した
    ことを特徴とするフオーカスサーボ装置。
JP8301888U 1988-06-24 1988-06-24 Expired JPH0348727Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8301888U JPH0348727Y2 (ja) 1988-06-24 1988-06-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8301888U JPH0348727Y2 (ja) 1988-06-24 1988-06-24

Publications (2)

Publication Number Publication Date
JPH0197417U true JPH0197417U (ja) 1989-06-28
JPH0348727Y2 JPH0348727Y2 (ja) 1991-10-17

Family

ID=31307751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8301888U Expired JPH0348727Y2 (ja) 1988-06-24 1988-06-24

Country Status (1)

Country Link
JP (1) JPH0348727Y2 (ja)

Also Published As

Publication number Publication date
JPH0348727Y2 (ja) 1991-10-17

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