Electronic ballast method and apparatus for gas discharge lamp

Abstract

The present invention discloses electronic ballasting method and device for gas discharge lamp. The electronic ballasting device includes EMC filter and rectifier circuit to provide power source, power factor correcting and voltage raising circuit to generate high DC voltage, high frequency DC/AC converter to form high frequency AC voltage, total control circuit, and lamp initiating and power control network to power the lamp tube of gas discharge lamp. The present invention has small electromagnetic radiation, less harmonic wave, high power factor, low temperature raise, obvious power saving effect, long life and other features.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an electronic ballast method and device for a high-intensity gas discharge lamp. Background technique [0002] Among various light sources, high-intensity discharge lamps (HID for short) exhibit high luminous efficacy and excellent light color reproduction. HID lamps have been used for high-intensity lighting of many large areas. Such as roads, stages and other large occasions. But the use of these HIDs must be equipped with a dedicated ballast device. Among them, inductive ballasts are widely used, but this kind of ballast has great defects, and the use of this inductive ballast must be equipped with a trigger. But the trigger is a vulnerable part, and the reason why many lights are not on is because the trigger is not working properly. Another disadvantage of magnetic ballasts is low power factor and power consumption, which also makes wiring and distribution transformers many ti...

AI Technical Summary

Problems solved by technology

But the trigger is a vulnerable part, and the reason why many lights are not on is because the trigger is not working properly.

Another disadvantage of inductive ballasts is low power factor and power consumption, which also makes wiring and distribution transformers many times larger than incandescent lamps of the same power, resulting in a serious waste of resources.

[0003] Existing HID electronic ballasts have defects such as saving electricity but not saving money, short life, serious electromagnetic interference, etc., so far they have not been popularized

The reason is that the current HID lamp electronic ballast uses a half-bridge or a full-bridge to output directly through the inductor. Due to the special working mode of the HID lamp, the large current required for the initial start-up is directly provided by the AC / DC conversion (DC / AC for short) circuit. The power tube in the tube is obtained, so the loss of the power tube is large and the heat is serious, which is one of the causes of the short life of the electronic ballast.

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