GB977143A - - Google Patents
Info
- Publication number
- GB977143A GB977143A GB977143DA GB977143A GB 977143 A GB977143 A GB 977143A GB 977143D A GB977143D A GB 977143DA GB 977143 A GB977143 A GB 977143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- output
- dec
- loads
- pair
- 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.)
- Active
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
- H05B41/20—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
- H05B41/2325—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 provided with pre-heating electrodes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/04—Regulating voltage or current wherein the variable is ac
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
977,143. Supply systems for consumption apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 28, 1960 [Dec. 30, 1959], No. 44446/60. Heading H2H. An alternating current source 1 such as a transistor converter with a parallel combination or an inductor and capacitor across the output thereof and to which output a plurality of loads such as the discharge lamp circuit of Fig. 2, having a capacitive characteristic during starting and an ohmic characteristic when running, may be connected has the capacitor element divided into a number of parts 14, 15, 16 as shown in Fig. 3, one or more lamp circuits being connected across each pair of capacitor terminals 4, 17; 17, 18 or 18, 5. Thus although the switching of the lamp circuits on or off influences the output frequency of the source 1, the output current remains substantially constant. Alternatively, if the loads each have an inductive characteristic during starting the parallel combination may comprise a single capacitor and a plurality of part inductors, each load being connected across each pair of inductor terminals.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB977143A true GB977143A (en) |
Family
ID=1754557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB977143D Active GB977143A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB977143A (en) |
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0
- GB GB977143D patent/GB977143A/en active Active
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