JPH0248892Y2 - - Google Patents
Info
- Publication number
- JPH0248892Y2 JPH0248892Y2 JP1982090253U JP9025382U JPH0248892Y2 JP H0248892 Y2 JPH0248892 Y2 JP H0248892Y2 JP 1982090253 U JP1982090253 U JP 1982090253U JP 9025382 U JP9025382 U JP 9025382U JP H0248892 Y2 JPH0248892 Y2 JP H0248892Y2
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- circuit
- output
- voltage
- unbalanced
- 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.)
- Expired
Links
- 230000004907 flux Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Control Of Electrical Variables (AREA)
Description
【考案の詳細な説明】
本考案はホール素子等が有する２つのホール電
圧端子が非対称構造で、磁束が印加されていない
場合に生じる直流電位差である不平衡電圧を、無
調整で自動的に補償することのできる回路に関す
るものである。[Detailed description of the invention] This invention has an asymmetric structure in which the two Hall voltage terminals of the Hall element etc. automatically compensate for unbalanced voltage, which is the DC potential difference that occurs when no magnetic flux is applied, without any adjustment. It is related to a circuit that can perform
従来、ホール素子等のホール電圧端子が非対称
構造で磁束が印加されていない場合、ホール電圧
端子渇に生じる直流的に不平衡な電圧を補償する
ための回路として、第１図に示すようなものが知
られていた。 Conventionally, when the Hall voltage terminal of a Hall element, etc. has an asymmetric structure and no magnetic flux is applied, a circuit like the one shown in Figure 1 has been used to compensate for the unbalanced DC voltage that occurs when the Hall voltage terminal is depleted. was known.
すなわち、ホール素子等１のホール電圧端子
３′−３′が非対称構造で磁束が印加されていない
場合、ホール電圧端子３′−３′間に生じる直流的
に不平衡な電圧を、電流端子２−２間に設けた可
変抵抗器４を調整して直流電圧を与えることによ
り、補償するようにしていた。なお、３−３は出
力端子（ホール電圧端子）である。 That is, when the Hall voltage terminals 3'-3' of the Hall element etc. 1 have an asymmetric structure and no magnetic flux is applied, the DC unbalanced voltage generated between the Hall voltage terminals 3'-3' is transferred to the current terminal 2. Compensation was achieved by adjusting the variable resistor 4 provided between -2 and applying a DC voltage. Note that 3-3 is an output terminal (Hall voltage terminal).
しかしながら、このような可変抵抗器４による
調整には手間を要し、また補償精度の点からも問
題があつた。 However, such adjustment using the variable resistor 4 requires time and effort, and also poses problems in terms of compensation accuracy.
本考案の目的は、上記従来の調整式補償回路の
問題点を克服し、不平衡電圧と無調整で自動的に
補償することのできるメインテナンス・フリーの
回路を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to overcome the problems of the conventional adjustable compensation circuit and provide a maintenance-free circuit that can automatically compensate for unbalanced voltage without adjustment.
以下、図によつて本考案の実施例を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第２図において、ホール素子等１の出力側に設
けられた抵抗R1，R2，R3，R4および増幅器５は
差動増幅器６をなし、さらにその出力側に抵抗
R5，R6，R7および増幅器７よりなる直流増幅器
８が接続されている。 In FIG. 2, resistors R 1 , R 2 , R 3 , R 4 provided on the output side of the Hall element etc. 1 and the amplifier 5 constitute a differential amplifier 6, and a resistor is further provided on the output side.
A DC amplifier 8 consisting of R 5 , R 6 , R 7 and an amplifier 7 is connected.
ホール素子等１のホール電圧端子３′−３′間で
生じた出力（ホール電圧端子３′−３′の非対称構
造による直流的な不平衡電圧を含む）は、まず差
動増幅器６によつて温度ドリフトの影響を除かれ
て増幅された後、さらに次段の直流増幅器８によ
つて増幅され、出力端子３−３から出力される。 The output generated between the Hall voltage terminals 3' and 3' of the Hall element etc. 1 (including DC unbalanced voltage due to the asymmetric structure of the Hall voltage terminals 3' and 3') is first output by the differential amplifier 6. After being amplified with the influence of temperature drift removed, it is further amplified by the next stage DC amplifier 8, and is output from the output terminal 3-3.
ここで重要なのは、直流増幅器８のフイードバ
ツクループ内に、積分器１０を設けていることで
ある。 What is important here is that the integrator 10 is provided within the feedback loop of the DC amplifier 8.
すなわち、コンデンサＣ、抵抗R8および増幅
器９よりなる積分器１０を設け、前記出力のうち
直流不平衡分のみを積分する。その積分された直
流不平衡分を抵抗R9，R10および増幅器１１より
なる反転器１２によつて正負を反転させた後、直
流増幅器８の反転入力端子（−）に加えることに
より、出力に不平衡が生じないように補償するの
である。したがつてこの回路においては、人為的
な調整は不要である。 That is, an integrator 10 consisting of a capacitor C, a resistor R8 , and an amplifier 9 is provided to integrate only the DC unbalanced component of the output. The integrated DC unbalanced component is inverted by an inverter 12 made up of resistors R 9 and R 10 and an amplifier 11, and then applied to the inverting input terminal (-) of the DC amplifier 8, resulting in an output. It compensates so that no imbalance occurs. Therefore, no manual adjustment is necessary in this circuit.
以上説明したように、本考案の回路を用いれ
ば、従来のような調整操作を必要とすることな
く、自動的に不平衡電圧を補償することができ
る。従つて、メインテナンス・フリーであり、ま
た補償精度も良い。 As explained above, by using the circuit of the present invention, it is possible to automatically compensate for unbalanced voltage without requiring adjustment operations as in the prior art. Therefore, it is maintenance free and has good compensation accuracy.
第１図は従来の調整式補償回路の回路図、およ
び第２図は本考案の一実施例よりなる不平衡電圧
の自動補償回路の回路図である。
１……ホール素子等、２……電流端子、３……
出力端子、３′……ホール電圧端子、５……差動
増幅器、８……直流増幅器、１０……積分器。
FIG. 1 is a circuit diagram of a conventional adjustable compensation circuit, and FIG. 2 is a circuit diagram of an automatic compensation circuit for unbalanced voltage according to an embodiment of the present invention. 1...Hall element etc., 2...Current terminal, 3...
Output terminal, 3'...Hall voltage terminal, 5...Differential amplifier, 8...DC amplifier, 10...Integrator.
Claims (1)
例して直流的に不平衡な電圧を生じる出力二端子
とを具備した素子または回路と、該素子または回
路の前記出力二端子間に接続した差動増幅器と、
該差動増幅器の出力に接続した直流増幅器とを設
け、該直流増幅器のフイードバツクループ内に積
分器と反転器との直流回路を接続したことを特徴
とする不平衡電圧の自動補償回路。 An element or circuit comprising two terminals to which a control current is applied and two output terminals that generate a direct current unbalanced voltage in proportion to the control current, and a differential connected between the two output terminals of the element or circuit. dynamic amplifier;
An automatic compensation circuit for unbalanced voltage, comprising: a DC amplifier connected to the output of the differential amplifier; and a DC circuit including an integrator and an inverter connected within a feedback loop of the DC amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9025382U JPS58195310U (en) | 1982-06-18 | 1982-06-18 | Automatic compensation circuit for unbalanced voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9025382U JPS58195310U (en) | 1982-06-18 | 1982-06-18 | Automatic compensation circuit for unbalanced voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58195310U JPS58195310U (en) | 1983-12-26 |
| JPH0248892Y2 true JPH0248892Y2 (en) | 1990-12-21 |
Family
ID=30220161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9025382U Granted JPS58195310U (en) | 1982-06-18 | 1982-06-18 | Automatic compensation circuit for unbalanced voltage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58195310U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916139A (en) * | 1972-06-10 | 1974-02-13 |
-
1982
- 1982-06-18 JP JP9025382U patent/JPS58195310U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916139A (en) * | 1972-06-10 | 1974-02-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58195310U (en) | 1983-12-26 |
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