JPS61139416U - - Google Patents
Info
- Publication number
- JPS61139416U JPS61139416U JP2385185U JP2385185U JPS61139416U JP S61139416 U JPS61139416 U JP S61139416U JP 2385185 U JP2385185 U JP 2385185U JP 2385185 U JP2385185 U JP 2385185U JP S61139416 U JPS61139416 U JP S61139416U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- magnetoresistive elements
- period
- series
- magnetoresistive
- 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
- 230000004907 flux Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第1図は、ステツピングモータによる磁気抵抗
効果素子装置の一部の平面図、第2図はその断面
図、第3図は磁気抵抗効果素子装置の回路図、第
4図は信号の波形図、第5図は他の実施例での接
続状態を示す回路図である。
1……磁気抵抗効果素子装置、2……ステツピ
ングモータ、3……ステータ、4……ポール、5
……励磁コイル、6……ロータコア、6a,6b
……極歯、7……永久磁石、8……軸、11,1
2……18……磁気抵抗効果素子、20……電源
、21,22……差動増幅器。
Fig. 1 is a plan view of a part of a magnetoresistive element device using a stepping motor, Fig. 2 is a sectional view thereof, Fig. 3 is a circuit diagram of the magnetoresistive element device, and Fig. 4 is a signal waveform diagram. , FIG. 5 is a circuit diagram showing a connection state in another embodiment. DESCRIPTION OF SYMBOLS 1... Magnetoresistive element device, 2... Stepping motor, 3... Stator, 4... Pole, 5
... Excitation coil, 6 ... Rotor core, 6a, 6b
...Pole tooth, 7...Permanent magnet, 8...Shaft, 11,1
2... 18... Magnetoresistive element, 20... Power supply, 21, 22... Differential amplifier.
Claims (1)
化する複数の磁気抵抗効果素子を、その抵抗値変
化が1/2周期ずれるように、上記被検体に対し
配置し、かつ直列に接続し、その直列回路の両端
に電源を接続し、上記複数の磁気抵抗効果素子の
接続中点より第1の信号を導き出し、一方上記複
数の磁気抵抗効果素子の近傍に他の複数の磁気抵
抗効果素子を上記1/2周期のずれと逆の方向に
1/2周期ずれるように上記被検体に対し配置し
、かつ直列に接続し、その直列回路の両端に電源
を接続し、上記他の複数の磁気抵抗効果素子の接
続中点より第2の信号を導き出し、上記第1の信
号および上記第2の信号を差動増幅器に入力する
ことを特徴とする磁気抵抗効果素子装置。 A plurality of magnetoresistive elements whose resistance values change in response to changes in the magnetic flux density of the test object are arranged with respect to the test object and connected in series so that the resistance changes are shifted by 1/2 period. A power supply is connected to both ends of the series circuit, and a first signal is derived from the connection midpoint of the plurality of magnetoresistive elements, while a plurality of other magnetoresistive elements are connected near the plurality of magnetoresistive elements. are arranged with respect to the above-mentioned object so as to be shifted by 1/2 period in the opposite direction to the above-mentioned 1/2 period deviation, and connected in series, and a power supply is connected to both ends of the series circuit, and the other plurality of A magnetoresistive element device, characterized in that a second signal is derived from a connection midpoint of the magnetoresistive element, and the first signal and the second signal are input to a differential amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985023851U JPH0520972Y2 (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985023851U JPH0520972Y2 (en) | 1985-02-20 | 1985-02-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61139416U true JPS61139416U (en) | 1986-08-29 |
JPH0520972Y2 JPH0520972Y2 (en) | 1993-05-31 |
Family
ID=30517461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985023851U Expired - Lifetime JPH0520972Y2 (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0520972Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5690213A (en) * | 1979-12-24 | 1981-07-22 | Nec Corp | Position detector |
-
1985
- 1985-02-20 JP JP1985023851U patent/JPH0520972Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5690213A (en) * | 1979-12-24 | 1981-07-22 | Nec Corp | Position detector |
Also Published As
Publication number | Publication date |
---|---|
JPH0520972Y2 (en) | 1993-05-31 |
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