GB813901A - Improvements in or relating to hermetic sealing of electrical apparatus - Google Patents
Improvements in or relating to hermetic sealing of electrical apparatusInfo
- Publication number
- GB813901A GB813901A GB2553054A GB2553054A GB813901A GB 813901 A GB813901 A GB 813901A GB 2553054 A GB2553054 A GB 2553054A GB 2553054 A GB2553054 A GB 2553054A GB 813901 A GB813901 A GB 813901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leads
- transformer
- electrical apparatus
- flexible
- transformers
- 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
- 238000007789 sealing Methods 0.000 title 1
- 239000003822 epoxy resin Substances 0.000 abstract 3
- 229920000647 polyepoxide Polymers 0.000 abstract 3
- 229920005989 resin Polymers 0.000 abstract 3
- 239000011347 resin Substances 0.000 abstract 3
- 238000005266 casting Methods 0.000 abstract 1
- 230000002939 deleterious effect Effects 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-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
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/005—Constructional details common to different types of electric apparatus arrangements of circuit components without supporting structure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
813,901. Transformers. GRESHAM TRANSFORMERS Ltd., and PLANER Ltd., G. V. Aug. 31, 1955 [Sept. 2, 1954], No. 25530/54. Class 38 (2). To hermetically seal electrical apparatus such as a transformer enclosed in a body 11 of flexible cast resin, epoxy resin 10 is placed around the leads 12 where they emerge from the body 11 to reduce risk of leakage along the leads. The epoxy resin may be applied wholly or partly in a depression in the surface of the body 11, Figs. 2, 3 (not shown), or as a layer 17A across the body surface where several leads 12 emerge, Fig. 5. The transformer AT, e.g. an audio frequency transformer may be enclosed in a magnetic screening can C. Suitable flexible resins and epoxy resins are specified. They may contain a filler such as quartz or mica powder. The invention overcomes the result of failure of adhesion between transformer leads and the flexible casting resin used to avoid deleterious effects in the core when pressure is exerted upon changes in temperature.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813901A true GB813901A (en) | 1959-05-27 |
Family
ID=1739290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2553054A Expired GB813901A (en) | 1954-09-02 | Improvements in or relating to hermetic sealing of electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3113284A (en) * | 1960-10-06 | 1963-12-03 | Cutler Hammer Inc | Electrical heater terminal and connector seals and methods of making the same |
| EP0013364A1 (en) * | 1978-12-27 | 1980-07-23 | Siemens Aktiengesellschaft | Radio frequency interference choke |
-
1954
- 1954-09-02 GB GB2553054A patent/GB813901A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3113284A (en) * | 1960-10-06 | 1963-12-03 | Cutler Hammer Inc | Electrical heater terminal and connector seals and methods of making the same |
| EP0013364A1 (en) * | 1978-12-27 | 1980-07-23 | Siemens Aktiengesellschaft | Radio frequency interference choke |
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