JPH0435219U - - Google Patents
Info
- Publication number
- JPH0435219U JPH0435219U JP1990075189U JP7518990U JPH0435219U JP H0435219 U JPH0435219 U JP H0435219U JP 1990075189 U JP1990075189 U JP 1990075189U JP 7518990 U JP7518990 U JP 7518990U JP H0435219 U JPH0435219 U JP H0435219U
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- circuit
- actuator drive
- current limiting
- limiting function
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Optical Recording Or Reproduction (AREA)
- Control Of Electric Motors In General (AREA)
Description
第１図及び第２図はこの考案に係るアクチユエ
ータ駆動回路の実施例を示し、第１図は回路図、
第２図はアクチユエータ駆動回路の周波数に対す
るダイナミツクレンジを示す特性図である。第３
図及び第４図は従来例を示し、第３図Ａは電流制
限機能を持たないアクチユエータ駆動の回路図、
第３図Ｂは電流制限機能を有したアクチユエータ
駆動の回路図、第４図は電流制限機能の有無によ
るアクチユエータ駆動回路の周波数に対するダイ
ナミツクレンジを示す特性図である。
主な符号の説明、１……電流制限機能の付いた
アンプ、Ｌ１……アクチユエータ、Ｒ１……電流
検出抵抗、Ｒ２……抵抗、Ｃ１……コンデンサ。
1 and 2 show an embodiment of the actuator drive circuit according to this invention, and FIG. 1 is a circuit diagram,
FIG. 2 is a characteristic diagram showing the dynamic range of the actuator drive circuit with respect to frequency. Third
4 and 4 show a conventional example, and FIG. 3A is a circuit diagram of an actuator drive without a current limiting function.
FIG. 3B is a circuit diagram of an actuator drive having a current limiting function, and FIG. 4 is a characteristic diagram showing the dynamic range of the actuator driving circuit with respect to frequency depending on whether or not the current limiting function is provided. Explanation of main symbols: 1 ... Amplifier with current limiting function, L1 ...Actuator, R1...Current detection resistor, R2 ...Resistor, C1 ...Capacitor.
Claims (1)
するアンプ回路とからなるアクチユエータ駆動回
路において、 前記アクチユエータを駆動するアンプ回路に電
流制限機能と、この電流制限機能に周波数特性を
持たせるように抵抗及びコンデンサとによる回路
を設け、アクチユエータ駆動のアンプ回路に周波
数に応答したダイナミツクレンジを持たせるよう
に構成したことを特徴とするアクチユエータ駆動
回路。[Claims for Utility Model Registration] In an actuator drive circuit consisting of an actuator and an amplifier circuit that drives the actuator, the amplifier circuit that drives the actuator has a current limiting function, and the current limiting function has a frequency characteristic. An actuator drive circuit characterized in that a circuit including a resistor and a capacitor is provided in the actuator drive circuit, and the actuator drive amplifier circuit is configured to have a dynamic range responsive to frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990075189U JPH0435219U (en) | 1990-07-17 | 1990-07-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990075189U JPH0435219U (en) | 1990-07-17 | 1990-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435219U true JPH0435219U (en) | 1992-03-24 |
Family
ID=31615549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990075189U Pending JPH0435219U (en) | 1990-07-17 | 1990-07-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435219U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397125A (en) * | 1989-09-11 | 1991-04-23 | Canon Inc | Optical information recording and reproducing device |
-
1990
- 1990-07-17 JP JP1990075189U patent/JPH0435219U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397125A (en) * | 1989-09-11 | 1991-04-23 | Canon Inc | Optical information recording and reproducing device |