GB1187280A - Improvements in or relating to Circuits for Operating Electric Discharge Lamps - Google Patents
Improvements in or relating to Circuits for Operating Electric Discharge LampsInfo
- Publication number
- GB1187280A GB1187280A GB4586767A GB4586767A GB1187280A GB 1187280 A GB1187280 A GB 1187280A GB 4586767 A GB4586767 A GB 4586767A GB 4586767 A GB4586767 A GB 4586767A GB 1187280 A GB1187280 A GB 1187280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- discharge
- electrodes
- circuit
- coating
- 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
- 239000003990 capacitor Substances 0.000 abstract 4
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910001922 gold oxide Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 1
- 229910001887 tin oxide Inorganic materials 0.000 abstract 1
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
- H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch
- H05B41/23—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
- H05B41/232—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
1,187,280. Supply circuits for electric discharge lamps. GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIES Ltd. 19 Sept., 1968 [6 Oct., 1967], No. 45867/67. Heading H2H. A discharge lamp 7, operated from an A.C. supply via a rectifier-capacitor bridge circuit 3, 4, 5, 6 delivering unidirectional current pulses, is characterized by a conducting coating 10 on the lamp envelope 9, the coating being in series with the lamp discharge and serving to broaden the current pulses. The voltage doubling circuit 3, 4, 5, 6 comprises semi-conductor diodes and capacitors of paper or electrolytic type poled for A.C. operation. The circuit 3, 4, 5, 6 is replaceable by a full-wave rectifiercapacitor circuit incorporating four rectifiers 14, 15, 16, 17 and a single capacitor 18, Fig. 2 (not shown), or two capacitors 19, 20 in series, Fig. 3 (not shown). The coating 10 is lighttransmissive and is a film of gold or tin oxide, its resistance being graded along the lamp length so that it is greatest nearest the cathode. The -electrodes can be shunted by a starting switch of the glow discharge or thermally operated bimetal type for pre-heating the lamp electrodes and facilitating starting of the discharge. The electrodes may be of the heatable thermionic type used in fluorescent lamps, e.g. low pressure mercury vapour lamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4586767A GB1187280A (en) | 1967-10-06 | 1967-10-06 | Improvements in or relating to Circuits for Operating Electric Discharge Lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4586767A GB1187280A (en) | 1967-10-06 | 1967-10-06 | Improvements in or relating to Circuits for Operating Electric Discharge Lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1187280A true GB1187280A (en) | 1970-04-08 |
Family
ID=10438909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4586767A Expired GB1187280A (en) | 1967-10-06 | 1967-10-06 | Improvements in or relating to Circuits for Operating Electric Discharge Lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1187280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0113385A1 (en) * | 1983-01-10 | 1984-07-18 | Yukiharu Hirao | Ballast stabilizer for discharge lamps and lighting circuit using the same |
| DE3910809A1 (en) * | 1989-04-04 | 1990-10-11 | Reinig Claus | Fluorescent lamp |
| EP0840353A2 (en) * | 1996-10-31 | 1998-05-06 | Toshiba Lighting & Technology Corporation | Low-pressure mercury vapour-filled discharge lamp, luminaire and display device |
-
1967
- 1967-10-06 GB GB4586767A patent/GB1187280A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0113385A1 (en) * | 1983-01-10 | 1984-07-18 | Yukiharu Hirao | Ballast stabilizer for discharge lamps and lighting circuit using the same |
| DE3910809A1 (en) * | 1989-04-04 | 1990-10-11 | Reinig Claus | Fluorescent lamp |
| EP0840353A2 (en) * | 1996-10-31 | 1998-05-06 | Toshiba Lighting & Technology Corporation | Low-pressure mercury vapour-filled discharge lamp, luminaire and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |