JPS6236402U - - Google Patents
Info
- Publication number
- JPS6236402U JPS6236402U JP12821085U JP12821085U JPS6236402U JP S6236402 U JPS6236402 U JP S6236402U JP 12821085 U JP12821085 U JP 12821085U JP 12821085 U JP12821085 U JP 12821085U JP S6236402 U JPS6236402 U JP S6236402U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- conversion
- reproducing device
- magnetic reproducing
- changes
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 5
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案に係る磁気再生装置の構成を示
すブロツク図、第２図乃至第４図は本考案に係る
実施例をそれぞれ示す再生増幅回路図、第５図、
第６図及び第８図は従来のＭＲ素子を含む再生増
幅回路をそれぞれ示す図、第７図はＩＣ内蔵再生
ヘツドの従来例を示す斜視図である。
ＲＭ……ＭＲ素子、Ｑ０，Ｑ１，Ｑ２，Ｑ３，
Ｑ４……トランジスタ、Ｄ……集積回路、Ｔ２…
…出力端子、Ａ１，Ａ２，Ａ３，ＯＰＡ……演算
増幅器、ｉ……センス電流、Ｒｇ……抵抗器、Ｃ
ｉｓｓ……入力容量、Ｓ……低電流源、Ｃ……コ
ンデンサ、Ｃａ……コンデンサアレー、Ｂ……Ｍ
Ｒ再生ヘツド、Ａ……セラミツク基板。
FIG. 1 is a block diagram showing the configuration of a magnetic reproducing device according to the present invention, FIGS. 2 to 4 are regenerative amplifier circuit diagrams showing embodiments according to the present invention, and FIG.
6 and 8 are diagrams respectively showing a conventional reproducing amplifier circuit including an MR element, and FIG. 7 is a perspective view showing a conventional example of a reproducing head with a built-in IC. RM...MR element, Q 0 , Q 1 , Q 2 , Q 3 ,
Q4 ...Transistor, D...Integrated circuit, T2 ...
...Output terminal, A1, A2, A3, OPA...Operation amplifier, i...Sense current, Rg...Resistor, C
iss...input capacitance, S...low current source, C...capacitor, Ca...capacitor array, B...M
R playback head, A...ceramic substrate.
Claims (1)
抗効果型素子と、前記比抵抗の変化を電気信号に
変換する変換手段と、前記変換手段の変換出力信
号を所望の大きさに増幅する増幅手段と、前記増
幅手段の増幅出力信号のうち所定周波数以下の信
号のみを検出するフイルター手段と、前記フイル
ター手段の出力信号に応じて前記変換手段におけ
る電気信号への変換状態を制御する制御手段とを
備えることを特徴とする磁気再生装置。 ２ 該変換手段は、電流供給手段によつて該比抵
抗の変化を該電気信号に変換し、該制御手段によ
つて該電流供給手段の電流値を変化させることを
特徴とする実用新案登録請求の範囲第１項に記載
の磁気再生装置。 ３ 該フイルター手段は、高抵抗と微小コンデン
サより成る積分時定数回路であることを特徴とす
る実用新案登録請求の範囲第１項に記載の磁気再
生装置。 ４ 該フイルター手段の出力信号は、直流信号で
あることを特徴とする実用新案登録請求の範囲第
１項に記載の磁気再生装置。[Claims for Utility Model Registration] 1. A magnetoresistive element whose resistivity changes in response to changes in a magnetic field, a conversion means that converts the change in resistivity into an electrical signal, and a conversion output signal of the conversion means. an amplification means for amplifying to a desired magnitude; a filter means for detecting only a signal having a predetermined frequency or less among the amplified output signals of the amplification means; and an electric signal in the conversion means according to the output signal of the filter means. 1. A magnetic reproducing device comprising: control means for controlling a conversion state. 2. A request for registration of a utility model characterized in that the converting means converts the change in the specific resistance into the electric signal by the current supply means, and changes the current value of the current supply means by the control means. The magnetic reproducing device according to item 1. 3. The magnetic reproducing device according to claim 1, wherein the filter means is an integral time constant circuit consisting of a high resistance and a minute capacitor. 4. The magnetic reproducing device according to claim 1, wherein the output signal of the filter means is a DC signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12821085U JPS6236402U (en) | 1985-08-22 | 1985-08-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12821085U JPS6236402U (en) | 1985-08-22 | 1985-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6236402U true JPS6236402U (en) | 1987-03-04 |
Family
ID=31023673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12821085U Pending JPS6236402U (en) | 1985-08-22 | 1985-08-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6236402U (en) |
-
1985
- 1985-08-22 JP JP12821085U patent/JPS6236402U/ja active Pending
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