GB635304A - Non-stroboscopic discharge lamp units - Google Patents
Non-stroboscopic discharge lamp unitsInfo
- Publication number
- GB635304A GB635304A GB22082/47A GB2208247A GB635304A GB 635304 A GB635304 A GB 635304A GB 22082/47 A GB22082/47 A GB 22082/47A GB 2208247 A GB2208247 A GB 2208247A GB 635304 A GB635304 A GB 635304A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamps
- discharge lamp
- reactance
- make
- reflector
- 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
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
635,304. Supply systems for space-discharge lamps. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 8, 1947, No. 22082. Convention date, May 6, 1939. [Class 38 (iv)] In order to minimize the stroboscopic effect and improve the power factor of a discharge lamp lighting unit, two similar fluorescent tubes 1, 2 are placed parallel and side by side in a common reflector and supplied respectively through an inductive reactance 16 and a capacitive reactance comprising an inductance 23 and capacitance 24 in series of such reactance values as to make the currents through the respective lamps substantially in quadrature and equal, and preferably to make the voltage across the lamps, when operating, approximately half the supply voltage. The reflector is preferably concave and may carry a housing containing the reactances. The lamps may comprise filamentary electrodes 14, 15 and 20, 21 associated with the usual starting switches 19, 22.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US635304XA | 1939-05-06 | 1939-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB635304A true GB635304A (en) | 1950-04-05 |
Family
ID=22049832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22082/47A Expired GB635304A (en) | 1939-05-06 | 1947-08-08 | Non-stroboscopic discharge lamp units |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB635304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
-
1947
- 1947-08-08 GB GB22082/47A patent/GB635304A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
| CN102420521B (en) * | 2010-09-28 | 2014-11-05 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
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