JPH01160316U - - Google Patents
Info
- Publication number
- JPH01160316U JPH01160316U JP5610888U JP5610888U JPH01160316U JP H01160316 U JPH01160316 U JP H01160316U JP 5610888 U JP5610888 U JP 5610888U JP 5610888 U JP5610888 U JP 5610888U JP H01160316 U JPH01160316 U JP H01160316U
- Authority
- JP
- Japan
- Prior art keywords
- magnetoresistive element
- output
- magnet
- input terminal
- received
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は、この考案の一実施例を示す回転数検
出装置のブロツク図、第２図は、同回転数検出装
置を構成する増幅回路及びコンパレータをさらに
具体的に示す回路図、第３図、第４図及び第５図
は、この考案の他の実施例を示す回転数検出装置
のブロツク図である。
２：回転板、３：磁石、４，４ａ：磁気抵抗効
果素子（第１の）、５：増幅回路、６：コンパレ
ータ、９，９ａ：磁気抵抗効果素子（第２の）、
Ａ１，Ａ２：演算増幅器。
Fig. 1 is a block diagram of a rotational speed detection device showing an embodiment of this invention, Fig. 2 is a circuit diagram showing more specifically an amplifier circuit and a comparator that constitute the rotational speed detection device, and Fig. 3 , 4 and 5 are block diagrams of a rotational speed detection device showing other embodiments of this invention. 2: rotating plate, 3: magnet, 4, 4a: magnetoresistive element (first), 5: amplifier circuit, 6: comparator, 9, 9a: magnetoresistive element (second),
A 1 , A 2 : Operational amplifier.
Claims (1)
設けられ、磁石の磁界により抵抗値の変化する第
１の磁気抵抗効果素子と、前記磁石の磁界の影響
を受けない状態に配置される第２の磁気抵抗効果
素子と、前記第１の磁気抵抗効果素子の出力を一
方の入力端に受け、前記第２の磁気抵抗効果素子
の出力を他方の入力端に受け、両磁気抵抗効果素
子の出力を差動導出する差動増幅回路と、この差
動増幅回路の出力を整形してパルス信号を出力す
る波形整形回路と、この波形整形回路が出力する
パルス信号をカウントするカウンタとを備えたこ
とを特徴とする回転数検出装置。 A magnet attached to a rotating body, a first magnetoresistive element provided near the magnet and whose resistance value changes depending on the magnetic field of the magnet, and a first magnetoresistive element disposed in a state where it is not affected by the magnetic field of the magnet. The outputs of the second magnetoresistive element and the first magnetoresistive element are received at one input terminal, the output of the second magnetoresistive element is received at the other input terminal, and the output of the first magnetoresistive element is received at the other input terminal. A differential amplifier circuit that differentially derives an output, a waveform shaping circuit that shapes the output of this differential amplifier circuit and outputs a pulse signal, and a counter that counts the pulse signal that this waveform shaping circuit outputs. A rotation speed detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5610888U JPH01160316U (en) | 1988-04-26 | 1988-04-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5610888U JPH01160316U (en) | 1988-04-26 | 1988-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01160316U true JPH01160316U (en) | 1989-11-07 |
Family
ID=31281991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5610888U Pending JPH01160316U (en) | 1988-04-26 | 1988-04-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01160316U (en) |
-
1988
- 1988-04-26 JP JP5610888U patent/JPH01160316U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01160316U (en) | ||
| JPH03122364U (en) | ||
| JPH0223711U (en) | ||
| JPH031676U (en) | ||
| JPS5856972U (en) | Rotating body detection device | |
| JPS59117969U (en) | rotation detection device | |
| JPH01162617U (en) | ||
| JPH046297U (en) | ||
| JPS58120911U (en) | Rotating system eccentricity detection device | |
| JPS63195215U (en) | ||
| JPS5998367U (en) | Rotation speed detection device | |
| JPH0185675U (en) | ||
| JPH0415064U (en) | ||
| JPS62143264U (en) | ||
| JPS62189659U (en) | ||
| JPS6329713U (en) | ||
| JPS63185520U (en) | ||
| JPS59144529U (en) | Flowmeter | |
| JPH0170178U (en) | ||
| JPS6359433U (en) | ||
| JPS6423602U (en) | ||
| JPS59163911U (en) | rotary encoder | |
| JPS5810014U (en) | pulse generator | |
| JPS62186206U (en) | ||
| JPS58160357U (en) | Rotation direction determination circuit |