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Ballast for discharge lamp with continuous operation regulating circuit

A technology for regulating circuits and electronic ballasts, which is applied in the direction of electric light sources, electrical components, lighting devices, etc., and can solve problems such as interfering with continuous operation of regulating circuits

Inactive Publication Date: 2005-11-30
PATENT TREUHAND GESELLSCHAFT FUER ELECTRIC GLUEHLAMPEN M B H
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, it will interfere with the function of the continuous operation regulation circuit.

Method used

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  • Ballast for discharge lamp with continuous operation regulating circuit
  • Ballast for discharge lamp with continuous operation regulating circuit
  • Ballast for discharge lamp with continuous operation regulating circuit

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 Indicates the first embodiment. The left side shows the two connection terminals KL1-1 and KL1-2, to which the mains voltage is connected. A filter consisting of two capacitors C1 and C2 and two coupling coils designated FI1 connects a full-bridge rectifier composed of diodes D1-D4 to the mains voltage terminals. The rectified supply voltage is applied via diodes D5-D8 belonging to the two pump branches to the intermediate circuit storage capacitor C6, which is shown at the far right in the figure.

[0027] To comply with the relevant norms on network current harmonics, eg IEC 1000-3-2, so-called pump circuits are also used, which require relatively little circuit engineering outlay. In principle, the rectifier is coupled via an electronic pump switch to the main energy store, the intermediate circuit capacitor C6. The pump nodes located between diodes D5 and D7 on the one hand and D6 and D8 on the other hand are connected via a pump network to the output of...

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PUM

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Abstract

The present invention relates to a new ballast for discharge lamps, in which continuous operation regulation is enabled when the lamp should be restarted again when the physical process of a preheating time element for a specified preheating time has not yet been sufficiently reversed. The circuit doesn't work.

Description

technical field [0001] The invention relates to a ballast for a discharge lamp, and more precisely to such a discharge lamp with preheatable electrodes. Background technique [0002] Such ballasts are already known. They often have a half-bridge inverter circuit. However, the invention also relates to other ballasts. Basically, the inverter circuit generates the supply power for the lamp from a rectified AC voltage source or from a DC voltage source, which has a higher frequency than the grid frequency. In many cases, a regulating circuit is provided here for regulating the lamp current or the lamp power in continuous operation of the lamp, which is referred to below as a continuous operation regulating circuit. The continuous operation regulation circuit affects the operating frequency at which the inverter supplies power to the lamp, and also regulates the lamp current or lamp power. This is achieved by operating at a frequency close to or away from the resonant freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/14H05B41/295H05B41/298H05B41/36
CPCH05B41/295H05B41/2988
Inventor B·鲁多尔夫
Owner PATENT TREUHAND GESELLSCHAFT FUER ELECTRIC GLUEHLAMPEN M B H