JPH0285366U - - Google Patents
Info
- Publication number
- JPH0285366U JPH0285366U JP16437788U JP16437788U JPH0285366U JP H0285366 U JPH0285366 U JP H0285366U JP 16437788 U JP16437788 U JP 16437788U JP 16437788 U JP16437788 U JP 16437788U JP H0285366 U JPH0285366 U JP H0285366U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- voltage
- coil
- offset
- generated
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案による電流検出器の実施例にお
ける出力の電圧増幅回路の回路図、第２図は本考
案によるトリミング調整用の抵抗値の変化に対す
る出力電圧値の一部の変化を示す特性曲線図でａ
は減少の傾向の特性曲線図、ｂは増加の傾向の特
性曲線図、第３図は本考案によるトリミング調整
用抵抗値の変化に対する出力電圧値の一部の総合
変化の特性曲線図、第４図は従来一般に用いられ
ている感磁素子の構造を示す略機構図、第５図は
従来の電圧増幅回路図である。
なお、１：磁気ギヤツプ、２：磁気コア、３：
感磁素子、４：磁界、５：コイル、６：リニアＩ
Ｃ。
Fig. 1 is a circuit diagram of an output voltage amplification circuit in an embodiment of the current detector according to the present invention, and Fig. 2 is a characteristic showing a partial change in the output voltage value in response to a change in the resistance value for trimming adjustment according to the present invention. a in the curve diagram
3 is a characteristic curve diagram showing a decreasing tendency, b is a characteristic curve diagram showing an increasing tendency, FIG. The figure is a schematic mechanical diagram showing the structure of a magnetic sensing element commonly used in the past, and FIG. 5 is a diagram of a conventional voltage amplification circuit. In addition, 1: magnetic gap, 2: magnetic core, 3:
Magnetic sensing element, 4: Magnetic field, 5: Coil, 6: Linear I
C.
Claims (1)
状の磁気コア２の一部に設けられた磁気ギヤツプ
１内に装着された感磁素子３が前記コイル５に流
れる被測定電流によつて生ずる磁界４中で発生さ
せる出力を増幅する電圧増幅回路中の出力電圧調
整用オフセツト調整部分にオフセツト電圧を増加
および減少させる２個のトリミング用可変抵抗器
ＶＲ１，ＶＲ３を具備する電流検出器。 A magnetic sensing element 3 installed in a magnetic gap 1 provided in a part of a circular magnetic core 2 made of a ferromagnetic material around which a coil 5 is wound is activated by the current to be measured flowing through the coil 5. A current detector comprising two trimming variable resistors VR1 and VR3 for increasing and decreasing an offset voltage in an offset adjusting part for adjusting an output voltage in a voltage amplifying circuit for amplifying an output generated in a generated magnetic field 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16437788U JPH0285366U (en) | 1988-12-21 | 1988-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16437788U JPH0285366U (en) | 1988-12-21 | 1988-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0285366U true JPH0285366U (en) | 1990-07-04 |
Family
ID=31449928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16437788U Pending JPH0285366U (en) | 1988-12-21 | 1988-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285366U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197801A (en) * | 1981-05-29 | 1982-12-04 | Hitachi Ltd | Hybrid integrated circuit thick film resistor and method of regulating same |
| JPS6318273A (en) * | 1986-07-11 | 1988-01-26 | Tohoku Metal Ind Ltd | current detector |
-
1988
- 1988-12-21 JP JP16437788U patent/JPH0285366U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197801A (en) * | 1981-05-29 | 1982-12-04 | Hitachi Ltd | Hybrid integrated circuit thick film resistor and method of regulating same |
| JPS6318273A (en) * | 1986-07-11 | 1988-01-26 | Tohoku Metal Ind Ltd | current detector |