GB712124A - Improvements in or relating to electrical transformers or inductors - Google Patents
Improvements in or relating to electrical transformers or inductorsInfo
- Publication number
- GB712124A GB712124A GB2262052A GB2262052A GB712124A GB 712124 A GB712124 A GB 712124A GB 2262052 A GB2262052 A GB 2262052A GB 2262052 A GB2262052 A GB 2262052A GB 712124 A GB712124 A GB 712124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- limb
- transformer
- main
- inductors
- varied
- 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
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
712,124. Transformers and inductors. POSTMASTER GENERAL. Nov. 18, 1952 [Sept. 27, 1951], No. 22620/51. Class 38(2) A transformer or inductor whose loss over a given frequency band or attenuation-frequency characteristic can be varied, comprises a core having one or more limbs 1 carrying the main windings 6, 9, a limb 3 carrying a winding 12 which forms or supplies a subsidiary load, and a saturable limb 2 which shorts limb 3. Direct current is passed through a main or other winding on limb 1, producing a flux in limb' 2 which saturates to a controlled extent, and the main flux is proportionately diverted to limb 3, where it induces voltage in windings 12. Thus the loss in the transformer is varied by changes in the D.C. and each value of D.C. gives a corresponding attenuation - frequency characteristic. The D.C. may be replaced by a permanent magnet. A transformer according to the invention may be used in a telephone system as described in Specification 712,123, [Group XXXIX].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2262052A GB712124A (en) | 1951-09-27 | 1951-09-27 | Improvements in or relating to electrical transformers or inductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2262052A GB712124A (en) | 1951-09-27 | 1951-09-27 | Improvements in or relating to electrical transformers or inductors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB712124A true GB712124A (en) | 1954-07-21 |
Family
ID=10182387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2262052A Expired GB712124A (en) | 1951-09-27 | 1951-09-27 | Improvements in or relating to electrical transformers or inductors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB712124A (en) |
-
1951
- 1951-09-27 GB GB2262052A patent/GB712124A/en not_active Expired
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