GB655414A - Improvements in or relating to radio frequency transformers - Google Patents
Improvements in or relating to radio frequency transformersInfo
- Publication number
- GB655414A GB655414A GB1215748A GB1215748A GB655414A GB 655414 A GB655414 A GB 655414A GB 1215748 A GB1215748 A GB 1215748A GB 1215748 A GB1215748 A GB 1215748A GB 655414 A GB655414 A GB 655414A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- core
- round
- relating
- radio frequency
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/16—Toroidal transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
655,414. Transformers. PEACH, E. R., and PYE, Ltd. May 3, 1949, No. 12157/48. [Class 38 (ii)] A radio-frequency transformer for use in admittance bridges, for coupling valves to their loads, or for matching feeders and aerials or balanced and unbalanced impedances, comprises a ring core of ferromagnetic material with a cavity housing a set of mutually coupled windings, there being one or more windings wound toroidally round the core. In a transformer (Fig. 3) for use in a bridge (Fig. 2, not shown), two rings 25, 25 of powdered magnetic material are secured together so that recesses 26, 26 form a cavity containing windings 27, 28. Two tightly coupled windings 31, 32 and a further winding 34 are wound round the core so that they are magnetically isolated from the windings 27, 28. The former pair cross each other twice in each turn, as shown in Fig. 6, to equalize their inductances. Three shields 30, 33 and 35 which may be connected together and earthed, form electrostatic screens between and around the windings (Fig. 4). Specification 566,970 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1215748A GB655414A (en) | 1949-05-03 | 1949-05-03 | Improvements in or relating to radio frequency transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1215748A GB655414A (en) | 1949-05-03 | 1949-05-03 | Improvements in or relating to radio frequency transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB655414A true GB655414A (en) | 1951-07-18 |
Family
ID=9999385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1215748A Expired GB655414A (en) | 1949-05-03 | 1949-05-03 | Improvements in or relating to radio frequency transformers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB655414A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051346B (en) * | 1956-09-01 | 1959-02-26 | Siemens Ag | Method and device for determining the high-frequency interference radiation from an electrical device |
| WO2001020622A1 (en) * | 1999-09-16 | 2001-03-22 | Philippe Viarouge | Power transformers and power inductors for low frequency applications using isotropic composite magnetic materials with high power to weight ratio |
-
1949
- 1949-05-03 GB GB1215748A patent/GB655414A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1051346B (en) * | 1956-09-01 | 1959-02-26 | Siemens Ag | Method and device for determining the high-frequency interference radiation from an electrical device |
| WO2001020622A1 (en) * | 1999-09-16 | 2001-03-22 | Philippe Viarouge | Power transformers and power inductors for low frequency applications using isotropic composite magnetic materials with high power to weight ratio |
| US6879237B1 (en) | 1999-09-16 | 2005-04-12 | Electrotechnologies Selem Inc. | Power transformers and power inductors for low-frequency applications using isotropic material with high power-to-weight ratio |
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