GB293426A - Improvements in and relating to variable radio transformers - Google Patents
Improvements in and relating to variable radio transformersInfo
- Publication number
- GB293426A GB293426A GB19498/28A GB1949828A GB293426A GB 293426 A GB293426 A GB 293426A GB 19498/28 A GB19498/28 A GB 19498/28A GB 1949828 A GB1949828 A GB 1949828A GB 293426 A GB293426 A GB 293426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- secondary winding
- tap connections
- tapping
- shows
- 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
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
293,426. British Thomson-Houston Co., Ltd., (Assignees of Brand, F. F.). July 6, 1927, [Convention date]. Regulating transformers.-Relates to a method of varying the effective number of secondary turns under conditions in which the primary circuit 20 remains energized although the load circuit is disconnected, and consists in connecting across a break in secondary winding 16 adjacent to which the tap connections are made, a byepass such as a condenser 21 so as to avoid sparking at the contacts of the tapping switch 19 caused by charging currents due to the capacity of the secondary winding, leads, terminals &c. Fig. 1 shows the invention applied to a transformer in which the tap connections are all located on one half of the secondary winding, the condenser being connected to the middle tapping and to the switch arm. Fig. 2 shows a modification in which tap connections are arranged on both halves of the secondary, the condenser being connected to the middle tapping of each set.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US203824A US1658664A (en) | 1927-07-06 | 1927-07-06 | Variable-ratio transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB293426A true GB293426A (en) | 1929-01-17 |
Family
ID=22755476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19498/28A Expired GB293426A (en) | 1927-07-06 | 1928-07-05 | Improvements in and relating to variable radio transformers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1658664A (en) |
| GB (1) | GB293426A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2020972B3 (en) * | 1986-07-30 | 1991-10-16 | Siemens Ag | PLACEMENT OF SWITCH FOR LARGE POWER TRANSFORMERS. |
-
1927
- 1927-07-06 US US203824A patent/US1658664A/en not_active Expired - Lifetime
-
1928
- 1928-07-05 GB GB19498/28A patent/GB293426A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1658664A (en) | 1928-02-07 |
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