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Half-bridge inverting circuit in electrodeless lamp electronic ballast

A half-bridge inverter circuit, electronic ballast technology, applied in the direction of electric light sources, electrical components, lighting devices, etc., can solve problems such as easily affecting electrodeless lamps

Inactive Publication Date: 2012-12-26
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of the existing half-bridge inverter circuit is stable, and it is easy to affect the final work of starting the electrodeless lamp. The inventor has done some research on the rectification technology of the electrodeless lamp and designed a half-bridge inverter circuit for the electrodeless lamp electronic ballast , the case arises from

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  • Half-bridge inverting circuit in electrodeless lamp electronic ballast
  • Half-bridge inverting circuit in electrodeless lamp electronic ballast
  • Half-bridge inverting circuit in electrodeless lamp electronic ballast

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Embodiment Construction

[0012] The preferred embodiments of the present invention will be described in further detail in conjunction with the accompanying drawings.

[0013] A half-bridge inverter circuit in an electrodeless lamp electronic ballast, such as figure 1 As shown, it includes two field effect transistors S1, S2, and LC resonance; two field effect transistors are connected in series S1, S2, and the LC resonance is connected to both ends of the field effect transistor S2, and the output of the LC resonance is connected to the electrodeless lamp. In this circuit, the electrodeless lamp is controlled by R eq and L eq Expressed in parallel.

[0014] The invention adopts the high-voltage resonator L6598, which is the world's first control IC that integrates the resonant conversion and the 600V high-voltage half-bridge driver on the same chip. High-efficiency power supplies for systems such as AC / DC adapters with resonant topology, DC / DC modules and CTVs and monitors, can replace the previous...

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Abstract

The invention mainly discloses a half-bridge inverting circuit in an electrodeless lamp electronic ballast, comprising two field-effect tubes and an LC resonance, wherein the two field-effect tubes are connected in series and the LC resonance is connected with two ends of one field-effect tube; and an output of the LC resonance is connected with an electrodeless lamp. The half-bridge inverting circuit disclosed by the invention has the advantages of simple structure and excellent driving effect.

Description

technical field [0001] The invention relates to the technical field of electrodeless lamps, in particular to a half-bridge inverter circuit in an electronic ballast of an electrodeless lamp. Background technique [0002] The electrodeless lamp is composed of three parts in structure, namely high-frequency generator (high-frequency power supply), power coupler and glass bulb coated with rare earth phosphor. [0003] Before the electrodeless lamp is lit, the gas in the lamp tube is equivalent to the insulating medium, and the secondary of the excitation transformer coil is disconnected, so the transformer is equivalent to a pure inductance at this time. When a high-frequency current flows through the inductor, a high-frequency magnetic field will be established in the inductor core. According to Maxwell's electromagnetic field theory, a vortex electric field will be induced around the alternating magnetic flux, and the vortex electric field will drive a small amount of free c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/282
Inventor 张新华张若煜
Owner SHAOXING UNIVERSITY