GB894492A - Improvements relating to the operation of electric discharge lamps - Google Patents
Improvements relating to the operation of electric discharge lampsInfo
- Publication number
- GB894492A GB894492A GB1945657A GB1945657A GB894492A GB 894492 A GB894492 A GB 894492A GB 1945657 A GB1945657 A GB 1945657A GB 1945657 A GB1945657 A GB 1945657A GB 894492 A GB894492 A GB 894492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- discharge
- condenser
- flash
- discharge lamps
- 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
- H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
894,492. Condenser charging and discharging circuits for photographic discharge lamps. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 23, 1958 [June 20, 1957], No. 19456/57. Class 38 (4). A circuit arrangement whereby a flash discharge for photographic purposes is obtained from a cold cathode discharge lamp 1 comprises a condenser 6 charged from a unidirectional voltage source 7 over a resistor 9 and normally closed contacts 8 of a relay the operating winding 10 of which is energized when the condenser 6 discharges through the lamp 1 to produce the flash whereupon the contacts 8 are opened to prevent the source 7 from supplying current t¾ the discharge path of the lamp 1. Any suitable starting device may be used to initiate the discharge of the lamp, as shown this comprises an electrode 5 The circuit may be modified to include two condensers and rectifiers whereby the supply may be an alternating voltage and the voltage doubling principle used. Specification 662,473 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1945657A GB894492A (en) | 1957-06-20 | 1957-06-20 | Improvements relating to the operation of electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1945657A GB894492A (en) | 1957-06-20 | 1957-06-20 | Improvements relating to the operation of electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB894492A true GB894492A (en) | 1962-04-26 |
Family
ID=10129665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1945657A Expired GB894492A (en) | 1957-06-20 | 1957-06-20 | Improvements relating to the operation of electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB894492A (en) |
-
1957
- 1957-06-20 GB GB1945657A patent/GB894492A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2495301A (en) | Voltage regulator | |
US3066243A (en) | Starting and operating circuit for high pressure arc lamps | |
US2700120A (en) | Electric system | |
GB1099536A (en) | Ignition circuit | |
US2372106A (en) | Circuit control system | |
GB894492A (en) | Improvements relating to the operation of electric discharge lamps | |
US3007081A (en) | Electronic flash unit | |
US3098947A (en) | Electrical systems including capacitors | |
SU146879A1 (en) | Electronic time switch | |
US2626378A (en) | Means for more easy starting of inverters at light loads | |
SU108335A1 (en) | DC Discharge Switch | |
US1975164A (en) | Grid-controlled mercury arc tube | |
US2223523A (en) | Electric discharge apparatus | |
JPS554064A (en) | Power source circuit for flash device | |
GB1265944A (en) | ||
GB1161764A (en) | Circuit with Triggerable Vacuum Gap Device | |
GB587660A (en) | Circuit arrangements for electric discharge lamps | |
SU113192A1 (en) | Electronic time delay relay | |
SU139014A1 (en) | The way to increase the stability of the electronic time relay | |
GB658750A (en) | Improvements in electrical circuits for use with discharge devices | |
GB581199A (en) | Improved starting arrangements for electric discharge lamps | |
GB854591A (en) | Improvements in or relating to electric power supply units including rectifiers | |
GB627193A (en) | Improvements in or relating to circuits for operating electric discharge lamps | |
GB689953A (en) | Improvements in or relating to a therapy x-ray tube supply system | |
GB721139A (en) | Improvements in or relating to circuit arrangements for charging capacitors |