High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp

Abstract

The invention relates to a high-power parallel connection auto-excitation type electrodeless fluorescent lamp vacuum tube converter; the vacuum tube converter comprises a filter circuit, a rectification circuit, a power factor correcting circuit, a delay trigger circuit, a power amplification circuit, a choking winding, an oscillation output circuit and a feedback transformer; and the vacuum tube converter is characterized in that the vacuum tube converter is provided with a feedback signal parallel connection pick-up circuit, the feedback signal parallel connection pick-up circuit is provided with a feedback signal circuit input end and a feedback signal circuit output end, the choking winding is provided with a choking winding feedback signal pick-up end, the filter circuit is connected with the rectification circuit, the rectification circuit is connected with the power factor correcting circuit which is connected with the delay trigger circuit, the delay trigger circuit is connected with the power amplification circuit, the power amplification circuit is connected with the oscillation output circuit, the choking winding feedback signal pick-up end is connected with the feedback signal circuit input end, the feedback signal circuit output end is connected with the feedback transformer, and the feedback transformer is connected with the power amplification circuit.

Description

technical field [0001] The invention relates to an electronic ballast, in particular to a high-power parallel self-excited electrodeless fluorescent lamp high-frequency electronic frequency converter. Background technique [0002] The existing external electrodeless lamp self-excited high-frequency electronic frequency converter (also known as electrodeless lamp ballast) is used to provide continuous current to the electrodeless lamp, that is, the transformed power supply, which is a complete set of components that must be used for the electrodeless lamp to work. , when this kind of self-excited electronic frequency converter is used in high-power induction lamps (above 60W), there are problems of high power consumption and high temperature rise. These problems directly affect the working stability of the induction lamp inverter, thereby shortening the The service life of the electrodeless lamp. In order to solve this deficiency, technicians try every means to reduce the te...

AI Technical Summary

Problems solved by technology

Although the application for this invention can reduce the surface temperature of the ballast, the added electric fan and other components instead increase the power consumption and generate magnetic interference, which is not conducive to the stable operation of the electrodeless lamp, and does not fundamentally solve the self-heating of the ballast And the problem of high power consumption still cannot effectively prolong the service life of the electrodeless lamp

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