JPH0358767U - - Google Patents
Info
- Publication number
- JPH0358767U JPH0358767U JP11586089U JP11586089U JPH0358767U JP H0358767 U JPH0358767 U JP H0358767U JP 11586089 U JP11586089 U JP 11586089U JP 11586089 U JP11586089 U JP 11586089U JP H0358767 U JPH0358767 U JP H0358767U
- Authority
- JP
- Japan
- Prior art keywords
- paper sheets
- circuit
- magnetoresistive elements
- amplifying
- magnetic
- 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 6
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の磁気データ検出回路の一実施
例を示す回路図、第２図は従来の磁気データ検出
回路の一例を示す回路図、第３図は磁気抵抗素子
の出力変動の温度特性図、第４図はサーミスタの
抵抗値−温度特性図、第５図は増幅手段の増幅度
の温度特性図、第６図は本考案の磁気データ検出
回路の検出出力の温度特性図、第７図は本考案の
磁気データ検出回路の他の実施例を示す回路図で
ある。
１，２……磁気抵抗素子、３，４，８，９，１
０，１１，１２，１５，１６，１８……抵抗、５
，１３……バイアス手段、６……演算増幅器、７
，１７……コンデンサ、１２……サーミスタ、１
４……ＰＮＰトランジスタ、２０……増幅手段、
２１……負帰還抵抗回路。
Fig. 1 is a circuit diagram showing an embodiment of the magnetic data detection circuit of the present invention, Fig. 2 is a circuit diagram showing an example of a conventional magnetic data detection circuit, and Fig. 3 is the temperature characteristic of output fluctuation of a magnetoresistive element. 4 is a resistance value-temperature characteristic diagram of the thermistor, FIG. 5 is a temperature characteristic diagram of the amplification degree of the amplifying means, FIG. 6 is a temperature characteristic diagram of the detection output of the magnetic data detection circuit of the present invention, and FIG. The figure is a circuit diagram showing another embodiment of the magnetic data detection circuit of the present invention. 1, 2... Magnetoresistive element, 3, 4, 8, 9, 1
0, 11, 12, 15, 16, 18...Resistance, 5
, 13... bias means, 6... operational amplifier, 7
, 17... Capacitor, 12... Thermistor, 1
4... PNP transistor, 20... amplifying means,
21... Negative feedback resistance circuit.
Claims (1)
紙葉類の通過による磁束変動により電気的抵抗が
変化する、直列に接続された２個の磁気抵抗素子
と、 当該２個の磁気抵抗素子に電気的にバイアスを
与えるバイアス手段と、 当該バイアス手段によりバイアスを与えられた
２個の磁気抵抗素子より得られる磁束変動の電気
的出力を増幅する増幅手段と、 当該増幅手段の増幅度を温度の上昇に従つて増
加するように決定する素子として用いられるサー
ミスタとを備えたことを特徴とする紙葉類の磁気
データ検出回路。[Claim for Utility Model Registration] In a circuit that detects magnetic data on paper sheets, a series circuit that is magnetically biased and whose electrical resistance changes due to changes in magnetic flux caused by the passage of paper sheets containing magnetic components. Two connected magnetoresistive elements, a bias means for electrically biasing the two magnetoresistive elements, and a magnetic flux fluctuation obtained from the two magnetoresistive elements biased by the bias means. Detection of magnetic data on paper sheets, characterized by comprising: amplifying means for amplifying electrical output; and a thermistor used as an element for determining the degree of amplification of the amplifying means to increase as temperature rises. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11586089U JPH0358767U (en) | 1989-10-03 | 1989-10-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11586089U JPH0358767U (en) | 1989-10-03 | 1989-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0358767U true JPH0358767U (en) | 1991-06-07 |
Family
ID=31664175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11586089U Pending JPH0358767U (en) | 1989-10-03 | 1989-10-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0358767U (en) |
-
1989
- 1989-10-03 JP JP11586089U patent/JPH0358767U/ja active Pending
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