GB434615A - Improvements in or relating to circuits for feeding electric discharge tubes - Google Patents
Improvements in or relating to circuits for feeding electric discharge tubesInfo
- Publication number
- GB434615A GB434615A GB1141634A GB1141634A GB434615A GB 434615 A GB434615 A GB 434615A GB 1141634 A GB1141634 A GB 1141634A GB 1141634 A GB1141634 A GB 1141634A GB 434615 A GB434615 A GB 434615A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- supply
- choke
- discharge
- electric discharge
- 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
434,615. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, HARRIS, N. L., and PRITCHARD, W. H., c /o General Electric Co., Wembley, Middlesex. April 16, 1934, No. 11416. [Class 39 (i)] An electric discharge tube 1 having a negative characteristic is connected in series with a stabilizing choke 6 to an A.C. supply, and has a thermionic electrode heated independently of the discharge by connecting its heating element 3 in series with a condenser 7 across the supply, at least during the starting period. The condenser 7 is used normally for power-factor correction and may be permanently connected to the heater 3, or a switch 8 may be employed to cut out the heater and to connect the condenser directly across the supply. The other electrode 2 may be heated by the discharge, or through a transformer, or through a circuit including a choke, condenser or resistance connected across the supply. In an alternative construction the stabilizing choke 6 is replaced by a condenser and the condenser 7 by a choke. Auxiliary electrodes may be provided for starting. Specification 434,614 is referred to in the Provisional Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1141634A GB434615A (en) | 1934-04-16 | 1934-04-16 | Improvements in or relating to circuits for feeding electric discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1141634A GB434615A (en) | 1934-04-16 | 1934-04-16 | Improvements in or relating to circuits for feeding electric discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB434615A true GB434615A (en) | 1935-09-05 |
Family
ID=9985800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1141634A Expired GB434615A (en) | 1934-04-16 | 1934-04-16 | Improvements in or relating to circuits for feeding electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB434615A (en) |
-
1934
- 1934-04-16 GB GB1141634A patent/GB434615A/en not_active Expired
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