| 摘要 |
The invention applies to the electrical lighting devices, and it may be used mainly in the exploitation of the defective luminescent light bulbs having a burned through electrode filament. The aim of it is to increase the common light yield, to carry out the diversely adjustable local lighting, to reduce the self-cost, to increase the level of exploitation safety and to gain the economy of electrical energy. The essence of this invention is characterized in that from condensers with repeatedly increased capacity and semiconductor diodes with proportionally lessened resistances the symmetrical scheme of voltage fourfold is made of several, connected in series, luminescent light bulbs with a burned through electrode filament at its output. This solution is unlike to the already known electrical lighting device containing the voltage fourfold where at its output through the ballast resistor is attached one luminescent light bulb with a burned through filament of the end electrode. The simultaneous exploitation of the several defective filament luminescent light bulbs increases device's light yield for about 500%, the actual cost is reduced by four times and the economy of electrical energy is gained up to 30%. |
