JPS61190076U - - Google Patents
Info
- Publication number
- JPS61190076U JPS61190076U JP7397385U JP7397385U JPS61190076U JP S61190076 U JPS61190076 U JP S61190076U JP 7397385 U JP7397385 U JP 7397385U JP 7397385 U JP7397385 U JP 7397385U JP S61190076 U JPS61190076 U JP S61190076U
- Authority
- JP
- Japan
- Prior art keywords
- solenoid
- current
- excitation current
- switch element
- resistor
- 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
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案の一実施例を示す電気回路図、
第２図は同トラクタの側面図、第３図は同油圧回
路図、第４図は他の実施例を示す電気回路図であ
る。
５…フロントローダ、７…ブーム、８…ブーム
シリンダ、１１，１２…電磁弁、１３，１４，１
５，１６，２３…ソレノイド、２４…半導体スイ
ツチ素子、２５，２６…トランジスタ、２８…パ
ルス発生回路、３５…演算増幅器。
FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention;
FIG. 2 is a side view of the same tractor, FIG. 3 is a hydraulic circuit diagram of the same, and FIG. 4 is an electric circuit diagram showing another embodiment. 5... Front loader, 7... Boom, 8... Boom cylinder, 11, 12... Solenoid valve, 13, 14, 1
5, 16, 23... Solenoid, 24... Semiconductor switch element, 25, 26... Transistor, 28... Pulse generation circuit, 35... Operational amplifier.
Claims (1)
作動する電磁弁において、ソレノイドに、電流制
御用の半導体スイツチ素子と、電流変化検出用の
抵抗とを直列に接続すると共に、前記抵抗で検出
した電流変化に応じて、前記励磁電流が略一定と
なるように前記半導体スイツチ素子を制御する制
御部を設けたことを特徴とする電磁弁の温度補償
回路。 In a solenoid valve that operates when a predetermined excitation current is passed through a solenoid, a semiconductor switch element for current control and a resistor for detecting current change are connected in series to the solenoid, and the current detected by the resistor is connected in series to the solenoid. 1. A temperature compensation circuit for a solenoid valve, characterized in that a control section is provided for controlling the semiconductor switch element so that the excitation current becomes substantially constant in response to a change in the excitation current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7397385U JPS61190076U (en) | 1985-05-18 | 1985-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7397385U JPS61190076U (en) | 1985-05-18 | 1985-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61190076U true JPS61190076U (en) | 1986-11-27 |
Family
ID=30613837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7397385U Pending JPS61190076U (en) | 1985-05-18 | 1985-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61190076U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521729A (en) * | 1975-06-24 | 1977-01-07 | Eikoushiya Kk | Electromagnetic proportional valve orive devices |
| JPS58194308A (en) * | 1982-04-26 | 1983-11-12 | Hitachi Constr Mach Co Ltd | Controller for electromagnetic device having proportional solenoid |
| JPS5949219B2 (en) * | 1980-03-28 | 1984-12-01 | 昭和電工株式会社 | Production method of β-chloroalanine |
-
1985
- 1985-05-18 JP JP7397385U patent/JPS61190076U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521729A (en) * | 1975-06-24 | 1977-01-07 | Eikoushiya Kk | Electromagnetic proportional valve orive devices |
| JPS5949219B2 (en) * | 1980-03-28 | 1984-12-01 | 昭和電工株式会社 | Production method of β-chloroalanine |
| JPS58194308A (en) * | 1982-04-26 | 1983-11-12 | Hitachi Constr Mach Co Ltd | Controller for electromagnetic device having proportional solenoid |
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