GB355982A - An improved circuit arrangement for igniting an electric discharge tube - Google Patents
An improved circuit arrangement for igniting an electric discharge tubeInfo
- Publication number
- GB355982A GB355982A GB28442/30A GB2844230A GB355982A GB 355982 A GB355982 A GB 355982A GB 28442/30 A GB28442/30 A GB 28442/30A GB 2844230 A GB2844230 A GB 2844230A GB 355982 A GB355982 A GB 355982A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge tube
- relay
- electrodes
- circuit
- glow
- 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
- H05B41/16—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
- H05B41/18—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 a starting switch
- H05B41/19—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 a starting switch for lamps having an auxiliary starting electrode
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
355,982. Vapour &c. lamp systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 23, 1930, No. 28442. Convention date, Nov. 27, 1929. [Class 38 (iv).] A discharge tube b having an incandescent cathode and positive column light is ignited a definite time after application of current, by a retarded relay operative at the supply pressure but ceasing to operate while the pressure on the relay falls appreciably. The relay is preferably connected to a point between a choke coil a<3> and an anode A<3> and controls the circuit to an auxiliary igniting electrode c, this circuit may include a transformer or transfotmers g<1>, h<2> or an induction coil and interrupter. A glow discharge tube t may constitute the relay, its electrodes being caused to approach one another when heated by the discharge, so closing the ignition circuit after the time delay required, but a separate retarding device may be used, and the glow lamp may be replaced by any type of rectifier. A thermal switch may for example be placed between the transformers g<1>, h<2>. The glow discharge tube f may have one or each of its electrodes mounted on a bimetallic strip, one of such strips being encased in mica to give the tube a rectifying action and induce unequal heating of the electrodes to produce contact between them. One electrode may be bimetallic and the other mounted on an elastic support such as molybdenum steel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL355982X | 1929-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB355982A true GB355982A (en) | 1931-09-03 |
Family
ID=19785223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28442/30A Expired GB355982A (en) | 1929-11-27 | 1930-09-23 | An improved circuit arrangement for igniting an electric discharge tube |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB355982A (en) |
-
1930
- 1930-09-23 GB GB28442/30A patent/GB355982A/en not_active Expired
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