GB579686A - Improvements relating to electric discharge lamps - Google Patents
Improvements relating to electric discharge lampsInfo
- Publication number
- GB579686A GB579686A GB788744A GB788744A GB579686A GB 579686 A GB579686 A GB 579686A GB 788744 A GB788744 A GB 788744A GB 788744 A GB788744 A GB 788744A GB 579686 A GB579686 A GB 579686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- voltage
- condenser
- lamp
- electrodes
- 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
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Discharge Lamp (AREA)
Abstract
579,686. Discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. April 27, 1944, No. 7887. [Class 39 (i)] A high pressure mercury vapour lamp with at least one of the running electrodes heated independently of the discharge has a filling of an inert gas at a pressure not less than one hundred millimetres of mercury. In the form shown a lamp L for signalling or photography has a filling of argon, neon, helium, krypton or xenon or a mixture thereof at a pressure, preferably 500-760 mm., and if of quartz may have a coating of luminous material which may alternatively be on the inner surface of the outer jacket J containing air, nitrogen or argon. . The cathode C and, if desired, the anode A may comprise a tungsten filament enclosing barium and strontium silicates with or without thorium oxide and are connected to batteries CB, AB or auxiliary windings CS, AS on the transformer P provided for charging a condenser K which, on discharge, applies a voltage of the order of 4000 volts to the electrodes. If this is above the striking voltage the lamp will strike but the discharge will terminate as the condenser discharges and recommence on its recharge. If such repeated discharges are not required, the condenser voltage must be slightly below the striking voltage and the discharge started by bringing up a high frequency field (Tesla ,coil TC) or by auxiliary electrodes. The electrode spacing may be 40 mm. in a tube 38 mm. diameter and the seals must be suitable for heavy currents.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB788744A GB579686A (en) | 1944-04-27 | 1944-04-27 | Improvements relating to electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB788744A GB579686A (en) | 1944-04-27 | 1944-04-27 | Improvements relating to electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB579686A true GB579686A (en) | 1946-08-13 |
Family
ID=9841704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB788744A Expired GB579686A (en) | 1944-04-27 | 1944-04-27 | Improvements relating to electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB579686A (en) |
-
1944
- 1944-04-27 GB GB788744A patent/GB579686A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3679928A (en) | High intensity far u.v. radiation source | |
GB1128504A (en) | High pressure mercury vapour electric discharge tube | |
US3657590A (en) | High intensity far u.v. radiation source | |
GB585960A (en) | Improvements in gaseous electric discharge devices | |
GB448706A (en) | Improvements in and relating to electric discharge lamps | |
US1961749A (en) | Gaseous electric discharge device | |
GB579686A (en) | Improvements relating to electric discharge lamps | |
US1915019A (en) | Gaseous electric discharge device | |
GB1374930A (en) | Method of and apparatus for flash discharge | |
GB698452A (en) | Improvements in electrical discharge lamps | |
US2126787A (en) | Electric lamp | |
US3320476A (en) | Starting circuit for high intensity short arc lamps | |
GB687195A (en) | Improvements in apparatus comprising an electric discharge lamp for producing flashes of light | |
GB995419A (en) | An electric discharge lamp | |
US3824423A (en) | Electric discharge lamp | |
GB571709A (en) | Improvements in or relating to thermionic devices | |
GB830243A (en) | Improvements in or relating to gas-filled electric incandescent lamps | |
GB568810A (en) | Improvements relating to electric discharge lamps | |
US1772603A (en) | Current rectifier and voltage regulator | |
GB574581A (en) | Improvements in or relating to luminous discharge tubes | |
GB569267A (en) | Improvements relating to electric discharge tubes | |
GB676143A (en) | Improvements in electric discharge lamps | |
JPS56126243A (en) | High voltage sodium lamp | |
GB645888A (en) | Improvements in and relating to electric discharge tubes | |
GB628013A (en) | Improvements in or relating to electric discharge tubes comprising a capacitative igniter |