GB644274A - Improvements in or relating to electric discharge lamp circuits - Google Patents
Improvements in or relating to electric discharge lamp circuitsInfo
- Publication number
- GB644274A GB644274A GB2521448A GB2521448A GB644274A GB 644274 A GB644274 A GB 644274A GB 2521448 A GB2521448 A GB 2521448A GB 2521448 A GB2521448 A GB 2521448A GB 644274 A GB644274 A GB 644274A
- Authority
- GB
- United Kingdom
- Prior art keywords
- choke coil
- started
- spacers
- cores
- condenser
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
644,274. Inductances; supply systems for space-discharge lamps. EKCO-ENSIGN ELECTRIC, Ltd., and STICKLEY, W. A. Sept. 28, 1948, No. 25214. Drawings to Specification. [Classes 38 (ii) and 38 (iv)] In a circuit arrangement for two parallel connected discharge lamps each started by a glow discharge starting switch and supplied through ballast impedances comprising respectively a choke coil and a condenser in series with a further choke coil to reduce flicker, the two choke coils are loosely coupled so that when the first lamp has started its associated choke coil induces an E.M.F. in that choke coil in series with the condenser so as to increase the voltage across the second lamp until it has started. and thereby ensure operation of the second glow discharge switch. Preferably each choke coil is wound on a laminated E-shaped core with the open ends facing and separated by two similar plates of mild steel or other magnetic material interleaved with spacers of non-magnetic material such as impregnated paper, the two cores, plates and spacers being held together as one assembly by brackets or strips bolted together through the cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2521448A GB644274A (en) | 1948-09-28 | 1948-09-28 | Improvements in or relating to electric discharge lamp circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2521448A GB644274A (en) | 1948-09-28 | 1948-09-28 | Improvements in or relating to electric discharge lamp circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB644274A true GB644274A (en) | 1950-10-04 |
Family
ID=10224058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2521448A Expired GB644274A (en) | 1948-09-28 | 1948-09-28 | Improvements in or relating to electric discharge lamp circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB644274A (en) |
-
1948
- 1948-09-28 GB GB2521448A patent/GB644274A/en not_active Expired
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