JPH0488490U - - Google Patents
Info
- Publication number
- JPH0488490U JPH0488490U JP40347890U JP40347890U JPH0488490U JP H0488490 U JPH0488490 U JP H0488490U JP 40347890 U JP40347890 U JP 40347890U JP 40347890 U JP40347890 U JP 40347890U JP H0488490 U JPH0488490 U JP H0488490U
- Authority
- JP
- Japan
- Prior art keywords
- offset voltage
- terminal
- turntable
- hall element
- operational 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
Links
- 239000003990 capacitor Substances 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案のホール素子のオフセツト電圧
補償回路の回路図の一例を示し、第２図は従来例
の回路図の一例を示す。
１……オペアンプ１、２……ホール素子、３…
…スピンドル・モータ、４……オペアンプ２。
FIG. 1 shows an example of a circuit diagram of an offset voltage compensation circuit for a Hall element according to the present invention, and FIG. 2 shows an example of a conventional circuit diagram. 1...Operational amplifier 1, 2...Hall element, 3...
...spindle motor, 4... operational amplifier 2.
Claims (1)
おいて、ターンテーブルを回転するスピンドル・
モータに備える回転制御用ホール素子に初期電流
を与えた時の端子Ａ，Ｂに発生したオフセツト電
圧を、各端子Ａ，Ｂと対入力端子１ｂ，１ｃで接
続したオペアンプ１の出力端１ａと入力端子１ｃ
との間に接続するシユミレーテイドキヤパシター
積分回路Ｒ４，Ｃ１を介してフイードバツクし、
オペアンプ１の動作中立点を形成するとともに、
上記オフセツト電圧を解消してスピンドル・モー
タ３に対する回転制御回路の初期条件を正常に安
定化することを特徴とするホール素子のオフセツ
ト電圧補償回路。 In electrical/electronic products that use a turntable, the spindle that rotates the turntable
The offset voltage generated at terminals A and B when an initial current is applied to the rotation control Hall element provided in the motor is input to the output terminal 1a of the operational amplifier 1, which is connected to each terminal A and B through the pair input terminals 1b and 1c. terminal 1c
feedback via simulated capacitor integration circuits R 4 and C 1 connected between
While forming the operational neutral point of operational amplifier 1,
An offset voltage compensation circuit for a Hall element, characterized in that the offset voltage is eliminated to normally stabilize the initial conditions of a rotation control circuit for the spindle motor 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40347890U JP2516883Y2 (en) | 1990-12-14 | 1990-12-14 | Hook block storage device for mobile crane with bending boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40347890U JP2516883Y2 (en) | 1990-12-14 | 1990-12-14 | Hook block storage device for mobile crane with bending boom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0488490U true JPH0488490U (en) | 1992-07-31 |
| JP2516883Y2 JP2516883Y2 (en) | 1996-11-13 |
Family
ID=31881252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40347890U Expired - Lifetime JP2516883Y2 (en) | 1990-12-14 | 1990-12-14 | Hook block storage device for mobile crane with bending boom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2516883Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223798A (en) * | 1993-12-16 | 1995-08-22 | Komatsu Ltd | Walking tower crane |
-
1990
- 1990-12-14 JP JP40347890U patent/JP2516883Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223798A (en) * | 1993-12-16 | 1995-08-22 | Komatsu Ltd | Walking tower crane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2516883Y2 (en) | 1996-11-13 |
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