JPS5444742A - Constant current circuit - Google Patents
Constant current circuitInfo
- Publication number
- JPS5444742A JPS5444742A JP11058277A JP11058277A JPS5444742A JP S5444742 A JPS5444742 A JP S5444742A JP 11058277 A JP11058277 A JP 11058277A JP 11058277 A JP11058277 A JP 11058277A JP S5444742 A JPS5444742 A JP S5444742A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- contact point
- load
- pdni
- life
- 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
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
PURPOSE: To obtain a multi-layer contact point that is operated surely in any load of heavy or light load, contact resistance is low and the life is long, by forming intermediate Ag layer among PdNi-WC layer on the contact point mother metal and Au layer on the surface.
CONSTITUTION: Cu layer 2 and Ni layer 3 are formed as foundation on Fe group contact point mother material 1, PdNi-WC layer 4 is formed on the layers, furthermore, Ag intermediate layer 5 and Au surface layer 6 are orderly formed and multilayer contact point is manufacture. Cu layer 2 and Ni layer 3 make adhering property of the layer 4 and the mother material 1 to the layer 4, and these are prepared electrolytically by plating method and the like. From this structure, since switching operation is carried out only by Au layer in light load and Au layer is diminished by vaporizing or dispersion to lower layer in heavy load, switching operation can be carried out by PdNi-WC layer, the contact point is surely operated to any load, the abrasion resistant property is excellent and the life can be elongated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11058277A JPS6012647B2 (en) | 1977-09-16 | 1977-09-16 | constant current circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11058277A JPS6012647B2 (en) | 1977-09-16 | 1977-09-16 | constant current circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5444742A true JPS5444742A (en) | 1979-04-09 |
JPS6012647B2 JPS6012647B2 (en) | 1985-04-02 |
Family
ID=14539485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11058277A Expired JPS6012647B2 (en) | 1977-09-16 | 1977-09-16 | constant current circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6012647B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60199357A (en) * | 1984-03-21 | 1985-10-08 | Tookiyoo Menki:Kk | Apparatus for weighing and packing of noodle in frame |
-
1977
- 1977-09-16 JP JP11058277A patent/JPS6012647B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60199357A (en) * | 1984-03-21 | 1985-10-08 | Tookiyoo Menki:Kk | Apparatus for weighing and packing of noodle in frame |
JPH0324188B2 (en) * | 1984-03-21 | 1991-04-02 | Tokyo Menki Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6012647B2 (en) | 1985-04-02 |
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