JPH0247587U - - Google Patents
Info
- Publication number
- JPH0247587U JPH0247587U JP12540688U JP12540688U JPH0247587U JP H0247587 U JPH0247587 U JP H0247587U JP 12540688 U JP12540688 U JP 12540688U JP 12540688 U JP12540688 U JP 12540688U JP H0247587 U JPH0247587 U JP H0247587U
- Authority
- JP
- Japan
- Prior art keywords
- placement section
- sample placement
- sweep
- power source
- auto
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 3
- 230000005347 demagnetization Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Magnetic Variables (AREA)
Description
第１図は本考案の保磁力計の一実施例における
回路構成を示すブロツク図であり、第２図は従来
の保磁力計の概念を示すブロツク図である。また
、第３図は従来の保磁力計による保磁力測定法の
動作を説明するための磁化曲線を示す図である。
図中の符号については、１は試料、２は磁力検
出コイル、３は磁界発生コイル、４はシールドケ
ース、５は加振器、６はパワーアンプ、７は低周
波発振器、８はプリアンプ、９はオートゲインコ
ントローラー、１０はバンドパスフイルター、１
１はオートフエーズロツクインアンプ、１２は電
圧計、１３はゼロ電圧検出器、１４はパルス発生
器、１５は磁化用直流電源、１６は自動減磁掃引
直流電源、１７は電流検出増幅器、１８はデイジ
タル電圧計、１９はウインドウコンパレーター、
２０はアラーム発生器、２１はプリンター駆動回
路、２２はコントロール信号発生器、２３はスタ
ートスイツチ、２４はレンジ切換スイツチ、２５
は電源切換器である。
FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the coercive force meter of the present invention, and FIG. 2 is a block diagram showing the concept of a conventional coercive force meter. Further, FIG. 3 is a diagram showing a magnetization curve for explaining the operation of the coercive force measuring method using a conventional coercive force meter. Regarding the symbols in the figure, 1 is the sample, 2 is the magnetic force detection coil, 3 is the magnetic field generation coil, 4 is the shield case, 5 is the exciter, 6 is the power amplifier, 7 is the low frequency oscillator, 8 is the preamplifier, 9 is an auto gain controller, 10 is a bandpass filter, 1
1 is an auto phase lock-in amplifier, 12 is a voltmeter, 13 is a zero voltage detector, 14 is a pulse generator, 15 is a DC power supply for magnetization, 16 is an automatic demagnetization sweep DC power supply, 17 is a current detection amplifier, 18 is a digital voltmeter, 19 is a window comparator,
20 is an alarm generator, 21 is a printer drive circuit, 22 is a control signal generator, 23 is a start switch, 24 is a range selection switch, 25
is a power switch.
Claims (1)
び減磁用掃引直流電源が互いに逆極性に接続され
ているソレノイド型磁界印加装置と、加振器を備
え、前記試料配置部に移動可能に配置されている
試料保持具と、前記試料配置部近傍に位置し、オ
ートゲインコントローラー及びバンドパスフイル
ターを介してオートフエーズロツクインアツプさ
らにコンパレーターに接続して形成される磁力検
出装置と、前記減磁用掃引直流電源に接続して設
けられている保磁力表示装置と、これらの装置を
集中かつ自動的に制御するように接続されたコン
トロール装置とを備えることを特徴とする自動保
磁力計。 The sample placement section is formed at the center, and includes a solenoid type magnetic field application device in which a magnetization power source and a demagnetization sweep DC power source are connected with mutually opposite polarities, and an exciter, and is movable to the sample placement section. a magnetic force detection device located near the sample placement section and connected to an auto phase lock-in and a comparator via an auto gain controller and a bandpass filter; An automatic coercivity meter comprising a coercive force display device connected to a demagnetizing sweep DC power supply and a control device connected to centrally and automatically control these devices. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125406U JPH0740228Y2 (en) | 1988-09-26 | 1988-09-26 | Automatic coercive force meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125406U JPH0740228Y2 (en) | 1988-09-26 | 1988-09-26 | Automatic coercive force meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0247587U true JPH0247587U (en) | 1990-03-30 |
| JPH0740228Y2 JPH0740228Y2 (en) | 1995-09-13 |
Family
ID=31375990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988125406U Expired - Lifetime JPH0740228Y2 (en) | 1988-09-26 | 1988-09-26 | Automatic coercive force meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740228Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50139783A (en) * | 1974-04-25 | 1975-11-08 | ||
| JPS607375A (en) * | 1983-06-27 | 1985-01-16 | Daido Steel Co Ltd | Method and apparatus for measuring coercive force of ferromagnetic substance test piece |
-
1988
- 1988-09-26 JP JP1988125406U patent/JPH0740228Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50139783A (en) * | 1974-04-25 | 1975-11-08 | ||
| JPS607375A (en) * | 1983-06-27 | 1985-01-16 | Daido Steel Co Ltd | Method and apparatus for measuring coercive force of ferromagnetic substance test piece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0740228Y2 (en) | 1995-09-13 |
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