US1891097A - Copper iodide rectifier - Google Patents
Copper iodide rectifier Download PDFInfo
- Publication number
- US1891097A US1891097A US480404A US48040430A US1891097A US 1891097 A US1891097 A US 1891097A US 480404 A US480404 A US 480404A US 48040430 A US48040430 A US 48040430A US 1891097 A US1891097 A US 1891097A
- Authority
- US
- United States
- Prior art keywords
- rectifier
- copper iodide
- lead
- iodide
- copper
- 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.)
- Expired - Lifetime
Links
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 title description 15
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 6
- 229910052740 iodine Inorganic materials 0.000 description 6
- 239000011630 iodine Substances 0.000 description 6
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 5
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000005588 Kraus reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- WRTMQOHKMFDUKX-UHFFFAOYSA-N triiodide Chemical compound I[I-]I WRTMQOHKMFDUKX-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/16—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising cuprous oxide or cuprous iodide
Definitions
- My invention relates to alternating current rectifiers of the solid electrode or dry plate type, particularly to rectifiers of'this type comprising copper iodide elements, and
- the injurious action of the above-noted polarization efieot is substantially eliminated by the addition tothe copper iodide of oxidizing means, preferably iodine.
- the ratio of alternating current input to the direct current output of the copper iodide rectifier becomes substantially independent of the preliminary treatment with direct current,- and at the same time 4() much longer operating life of the rectifier is attained. If curves were drawn which rep resented the ratio of alternating current input .to direct current .output independence on the preliminary treatment with direct ourrent, for example, to a given duration of the time of preliminary treatment t, they would show an average slope,
- Figs. '1 and 2 are respectively a plan view and cross-section of a rectifier disc embodying my invention.
- a single rectifier disc 1 i5 shown comprising a comparatively massive plate of copper iodide 2 between a lead plate 3 and a layer of copper 4.
- the plate 3 may be-of thin lead foil on which has been formed a layer of lead sulphate 5; the layer 4-pref- 7 erably consists of finely' powdered copper.
- lead plate '3 is placed at the bottom of a die in a press and iodide mixture is poured-on the lead. After the iodide has been pressed lightly to 0 produce a smooth surface the copper powder is distributed uniformly over the surface. The layers are then pressed together strongly and a hard, dense disc is thus obtained.
- the material forming the layer 2 is not copper iodide alone but consists of pure co per iodide to which has been added a suitab e oxidizing a ent, preferably free iodine, to the extent, 0.3%.
- the lead sulphate 5 on the su plate 3 facilitates the formation of a thin coating of lead iodide 6 on the lead plate by the action of the free iodine in the copper iodide after the operation of pressing of the disc, iodide is the seat of the rectification of alternating current when the disc is incorporated in a rectifier circuit.
- a rectifier comprisin a lead electrode having a lead sulphate sur ace formed thereon, and an element in contact with said surface comprising a mixture of copper iodide and free iodine.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Description
Dec. 13, 1932. w, ss 1,891,097
COPPER IODIDE RECTIFIER Filed Sept. 8. 1950 Fig. I
Inventor: Walther- Krauss,
His Attorneg.
Patented Dec. 13, 1932 UNITED STATES PATENT orrlce WALTHER KRAUSS, OF BERLIN-ZEHLENDORF, GEBMANYpASSIGNOR '10 GENERAL ELECTRIC COMPANY, A. CORBOBATION OF NEW YORK COPPER 10mm. RECTIFIER Application filed September 8, 1930, Serial No. 480,404, and in Germany October 3, 1929.
My invention relates to alternating current rectifiers of the solid electrode or dry plate type, particularly to rectifiers of'this type comprising copper iodide elements, and
its ob ect is the provision of an improved copper iodide rectifier and of animprovecl method of'preparing the elements therefor.
In the use'of dry rectifiers in which the discs are built up of copper iodide in contact with electrodes of various materials, it has been observed that the rectifying eifect weakens after a comparatively short period of operation. It is believed that this disadvantageous action of the copper iodide rectifiers previously known is due to a polarization effect, since experiments in which the rectifiers were subjected to the action of direct current before being used for the rectification of alternating current have shown that in the use of such rectifiers the ratio of the alternating current supplied to the rectifier to the direct current output thereof is dependent on the direction, amount and duration of the direct current passed through the rectifier in this preliminary treatment, and that such preliminary treatment with direct current exerts,
in general, an unfavorable influence on the ratio of input to output of the rectifier.
In accordance with my invention, the injurious action of the above-noted polarization efieot is substantially eliminated by the addition tothe copper iodide of oxidizing means, preferably iodine. I have found that by the addition of a suitable amount of iodine to the copper iodide, the ratio of alternating current input to the direct current output of the copper iodide rectifier becomes substantially independent of the preliminary treatment with direct current,- and at the same time 4() much longer operating life of the rectifier is attained. If curves were drawn which rep resented the ratio of alternating current input .to direct current .output independence on the preliminary treatment with direct ourrent, for example, to a given duration of the time of preliminary treatment t, they would show an average slope,
(a. 0. input) (d. 0. output) from the following description-when considered in connection with the accompanying drawing and its scope will be pointed out in the appended claims. v
Referring to the drawing, Figs. '1 and 2 are respectively a plan view and cross-section of a rectifier disc embodying my invention.
In the figures a single rectifier disc 1 i5 shown comprising a comparatively massive plate of copper iodide 2 between a lead plate 3 and a layer of copper 4. The plate 3 may be-of thin lead foil on which has been formed a layer of lead sulphate 5; the layer 4-pref- 7 erably consists of finely' powdered copper. In forming the complete disc 1, lead plate '3 is placed at the bottom of a die in a press and iodide mixture is poured-on the lead. After the iodide has been pressed lightly to 0 produce a smooth surface the copper powder is distributed uniformly over the surface. The layers are then pressed together strongly and a hard, dense disc is thus obtained. As hereinbefore explained, in accordance with the present invention means are provided to avoid the polarization difficulties heretofore encountered in the use of copper iodide rectifiers. To this end, the material forming the layer 2 is not copper iodide alone but consists of pure co per iodide to which has been added a suitab e oxidizing a ent, preferably free iodine, to the extent, 0.3%. The lead sulphate 5 on the su plate 3 facilitates the formation of a thin coating of lead iodide 6 on the lead plate by the action of the free iodine in the copper iodide after the operation of pressing of the disc, iodide is the seat of the rectification of alternating current when the disc is incorporated in a rectifier circuit. a
What I claim as new and desire to secure by Letters Patent of the United States is:
1. A rectifier comprisin a lead electrode having a lead sulphate sur ace formed thereon, and an element in contact with said surface comprising a mixture of copper iodide and free iodine.
2. The combination in a rectifier of a lead electrode, a layer of lead sulphate on the surface of said electrode, an element comprising copper iodide and free iodine mixed therewith, and a coating of lead iodide formed b the action of said iodine on: said lead sulphate between said lead electrode and said element. In witness whereof, I have hereunto set my hand this 19th da of August, 1930.
I ALTHER KRAUSS.
or exam le of race of u and this thin coating of lead
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1891097X | 1929-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1891097A true US1891097A (en) | 1932-12-13 |
Family
ID=7747870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US480404A Expired - Lifetime US1891097A (en) | 1929-10-03 | 1930-09-08 | Copper iodide rectifier |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1891097A (en) |
-
1930
- 1930-09-08 US US480404A patent/US1891097A/en not_active Expired - Lifetime
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