GB674148A - Improvements in or relating to means for controlling the circuit of a discharge lamp - Google Patents
Improvements in or relating to means for controlling the circuit of a discharge lampInfo
- Publication number
- GB674148A GB674148A GB1432349A GB1432349A GB674148A GB 674148 A GB674148 A GB 674148A GB 1432349 A GB1432349 A GB 1432349A GB 1432349 A GB1432349 A GB 1432349A GB 674148 A GB674148 A GB 674148A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- windings
- primary
- loosely coupled
- winding
- 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
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/08—High-leakage transformers or inductances
- H01F38/10—Ballasts, e.g. for discharge lamps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
674,148. Supply systems for space discharge lamps; transformers. EKCO-ENSIGN ELECTRIC, Ltd., and STICKLEY, W. A. May 30, 1950 [May 28, 1949], No. 14323/49. Classes 38 (ii) and 38 (iv). The ballast for an electric discharge lamp a comprises an autotransformer having an open circuit output voltage approximately equal to the supply voltage and two series connected and closely coupled primary windings W1, W2 with a loosely coupled secondary winding W3 connected between a lamp electrode and the junction between the two primary windings so that when the lamp is in operation ballasting is effected by the loosely coupled and series connected windings W1 and W3. In the case when the usual starting switch in shunt with the discharge path, Fig. 4 (not shown), is dispensed with a further loosely coupled secondary winding W4 may be extended from the secondary primary winding W2, each secondary being provided with a tapping to provide heating current to the lamp electrodes. The transformer, Fig. 6 (not shown), preferably has a shell type core, with the two primary windings concentrically arranged at one end of the centre limb and the secondary windings similarly arranged at the other end. A single tapped primary winding may be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1432349A GB674148A (en) | 1949-05-28 | 1949-05-28 | Improvements in or relating to means for controlling the circuit of a discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1432349A GB674148A (en) | 1949-05-28 | 1949-05-28 | Improvements in or relating to means for controlling the circuit of a discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB674148A true GB674148A (en) | 1952-06-18 |
Family
ID=10039117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1432349A Expired GB674148A (en) | 1949-05-28 | 1949-05-28 | Improvements in or relating to means for controlling the circuit of a discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB674148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1023527B (en) * | 1954-04-01 | 1958-01-30 | Philips Nv | Device with a gas and / or vapor discharge tube |
-
1949
- 1949-05-28 GB GB1432349A patent/GB674148A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1023527B (en) * | 1954-04-01 | 1958-01-30 | Philips Nv | Device with a gas and / or vapor discharge tube |
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