GB980256A - Improvements in or relating to electrolytic condensers for use in alternating current circuits - Google Patents
Improvements in or relating to electrolytic condensers for use in alternating current circuitsInfo
- Publication number
- GB980256A GB980256A GB1736860A GB1736860A GB980256A GB 980256 A GB980256 A GB 980256A GB 1736860 A GB1736860 A GB 1736860A GB 1736860 A GB1736860 A GB 1736860A GB 980256 A GB980256 A GB 980256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- plates
- concentrated
- mixture
- polished
- 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
Links
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 abstract 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 6
- 239000000203 mixture Substances 0.000 abstract 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 4
- 229910017604 nitric acid Inorganic materials 0.000 abstract 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract 3
- 239000011888 foil Substances 0.000 abstract 3
- 235000011007 phosphoric acid Nutrition 0.000 abstract 3
- 239000001117 sulphuric acid Substances 0.000 abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000005868 electrolysis reaction Methods 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 2
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 abstract 1
- 229920001353 Dextrin Polymers 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000007513 acids Chemical class 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- FYGDTMLNYKFZSV-MRCIVHHJSA-N dextrin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)OC1O[C@@H]1[C@@H](CO)OC(O[C@@H]2[C@H](O[C@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-MRCIVHHJSA-N 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 239000001488 sodium phosphate Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 abstract 1
- 235000019801 trisodium phosphate Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- ing And Chemical Polishing (AREA)
Abstract
980,256. Capacitors. PLESSEY CO. Ltd. May 16, 1961 [May 17, 1960], No. 17368/60. Drawings to Specification. Heading H1M. An electrolytic capacitor comprises aluminium anode and cathode plates which may be rolled together with a fibrous intermediate foil for immersion in a high-conductivity electrolyte composed of an aqueous solution of one or more chemically weak acids, e.g. acetic or citric acid, the anode and, if required, the cathode, being chemically or electrochemically polished to a mirror finish and electrolytically formed with an oxide film without formation of an atmospherically produced oxide film. The plates may be polished by treating with a mixture of 70% phosphoric acid, 10% nitric acid and 20% sulphuric acid all concentrated; or with a mixture of 25% acetic anhydride and 75% concentrated perchloric acid at 60-85‹ C.; or with a hot mixture of 70% orthophosphoric acid, 25% sulphuric acid and 5% nitric acid all concentrated at 100-110‹C.; or with a mixture of 7-19% ammonium bifluoride 8-18% of concentrated nitric acid, 1-5% dextrine, and water to 100% at 70‹ C. Alternatively the plates may be polished by D.C. electrolysis in a mixture of perchloric acid and acetic anhydride, sodium carbonate and trisodium phosphate; or sulphuric acid, nitric acid, and orthophosphoric acid all concentrated with stainless steel cathode. Two plates may be polished simultaneously by A.C. electrolysis between the plates in an electrolyte as above. Foil plates may be continuously polished and electrolytically oxidized without formation of atmospheric oxide by drawing a length of foil through the polishing bath and the electrolytic oxidation bath in a submerged condition throughout the process. Specification 901,793 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1736860A GB980256A (en) | 1960-05-17 | 1960-05-17 | Improvements in or relating to electrolytic condensers for use in alternating current circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1736860A GB980256A (en) | 1960-05-17 | 1960-05-17 | Improvements in or relating to electrolytic condensers for use in alternating current circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB980256A true GB980256A (en) | 1965-01-13 |
Family
ID=10093981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1736860A Expired GB980256A (en) | 1960-05-17 | 1960-05-17 | Improvements in or relating to electrolytic condensers for use in alternating current circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB980256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533148A (en) * | 1967-07-25 | 1970-10-13 | Texas Instruments Inc | Thin film capacitors |
-
1960
- 1960-05-17 GB GB1736860A patent/GB980256A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533148A (en) * | 1967-07-25 | 1970-10-13 | Texas Instruments Inc | Thin film capacitors |
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