GB427322A - Improvements in and relating to magnetic bodies more especially in high frequency electrical apparatus - Google Patents
Improvements in and relating to magnetic bodies more especially in high frequency electrical apparatusInfo
- Publication number
- GB427322A GB427322A GB28456/33A GB2845633A GB427322A GB 427322 A GB427322 A GB 427322A GB 28456/33 A GB28456/33 A GB 28456/33A GB 2845633 A GB2845633 A GB 2845633A GB 427322 A GB427322 A GB 427322A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- magnetic
- insulating
- high frequency
- coil
- 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
- 239000011162 core material Substances 0.000 abstract 10
- 239000004020 conductor Substances 0.000 abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- 239000011810 insulating material Substances 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229920001971 elastomer Polymers 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 229920002554 vinyl polymer Polymers 0.000 abstract 2
- 239000000899 Gutta-Percha Substances 0.000 abstract 1
- 240000000342 Palaquium gutta Species 0.000 abstract 1
- 244000001591 balata Species 0.000 abstract 1
- 235000016302 balata Nutrition 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 239000007859 condensation product Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 229920000588 gutta-percha Polymers 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- -1 polystyrol Chemical class 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
- H01F1/26—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
427,322. Inductances; cables. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Oct. 14, 1933, No. 28456. Convention date, Oct. 19, 1932. [Classes 36 and 37] A magnetic core for high-frequency apparatus is formed of a uniform mixture of magnetic powder with insulating material, the latter amounting in volume to at least half the total volume of the core, and consisting of a polyvinyl compound, such as polystyrol, alone or mixed with other insulating materials, such as rubber, balata, guttapercha, cellulose derivatives, formaldehyde condensation products, or waxes. The mixture of magnetic insulating substances may be compressed in a mould, or formed into sheets, bands or the like from which the cores can be made. The products may be used for loading coils, filter coils or other high frequency apparatus, or for loading cables. In the form shown in Figs. 1 and 2, a coil 3 is provided with a protecting jacket 4 around which the core 5 of magnetic and insulating materials is applied with light pressure. In a modification, the coil is of rectangular cross section, and in another modification the core is applied as a ribbon wound round the coil. Fig. 7 shows the application of the invention to a cable for the transmission of high frequency currents, the cable comprising a conductor 30 coated with a viscous mass 31 which is surrounded by a magnetic ribbon 32 and outer insulating layer 33. Where the cable is provided with a return conductor concentric with the inner conductor, both conductors may be surrounded with a magnetic ribbon. The Specification as open to inspection under Sect. 91 is not restricted to cores containing polyvinyl compounds, but covers the use of any mixture of finely divided magnetic and insulating substances in which the volume of the latter amounts to at least half the total volume of the core. The core material may be hardened by polymerization or by evaporation of solvents, or in the case of rubber mixtures, by vulcanization. The core material 52 may also be used for filling the air gaps in a core of ordinary construction made in two parts, as shown in Fig. 9 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE427322X | 1932-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB427322A true GB427322A (en) | 1935-04-15 |
Family
ID=6477303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28456/33A Expired GB427322A (en) | 1932-10-19 | 1933-10-14 | Improvements in and relating to magnetic bodies more especially in high frequency electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB427322A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2432715A (en) * | 1944-01-25 | 1947-12-16 | F W Sickles Company | Inductance coil structure |
| DE1017298B (en) * | 1953-03-06 | 1957-10-10 | Siemens Ag | Process for the production of a ferromagnetic, electrically non-conductive layer on carrier pads |
| DE968915C (en) * | 1952-03-29 | 1958-04-10 | Siemens Ag | Closed ferromagnetic core with butt joints |
| US3033944A (en) * | 1957-12-31 | 1962-05-08 | Automatic Elect Lab | Magnetostrictive transducer |
| US4816614A (en) * | 1986-01-20 | 1989-03-28 | Raychem Limited | High frequency attenuation cable |
-
1933
- 1933-10-14 GB GB28456/33A patent/GB427322A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2432715A (en) * | 1944-01-25 | 1947-12-16 | F W Sickles Company | Inductance coil structure |
| DE968915C (en) * | 1952-03-29 | 1958-04-10 | Siemens Ag | Closed ferromagnetic core with butt joints |
| DE1017298B (en) * | 1953-03-06 | 1957-10-10 | Siemens Ag | Process for the production of a ferromagnetic, electrically non-conductive layer on carrier pads |
| US3033944A (en) * | 1957-12-31 | 1962-05-08 | Automatic Elect Lab | Magnetostrictive transducer |
| US4816614A (en) * | 1986-01-20 | 1989-03-28 | Raychem Limited | High frequency attenuation cable |
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