A High Performance Low Distortion Electronic Ballast

Abstract

The invention provides a high-performance low-distortion electronic ballast which comprises an input filter circuit, a rectifying circuit, a bypass correcting circuit, a trigger circuit, a half-bridge drive circuit and a serial resonance load circuit. The input filter circuit comprises an asymmetry low-pass filter formed by L1, L2, L3, C1 and C2. The half-bridge drive circuit comprises a half-bridge pulse oscillating circuit formed by triodes and MOS (metal oxide semiconductor) tubes. Impedance conversion is used by the half-bridge drive circuit to allow the MOS tubes to match with impedance of a pulse transformer, so that MOS tube output is stabilized, work efficiency of the MOS tubes is increased, and temperature rise is lowered. Current waveforms of a tube is improved by improving the input filter circuit, lamp current impact to cathodes is reduced, and the service life of the tube is prolonged. The circuits are simplified, component cost is basically the same as existing low-level products, cost performance of the electronic ballast is increased while performance of the same is guaranteed and improved, and the electronic ballast is highly practical.

Description

technical field [0001] The invention relates to a high-performance and low-distortion electronic ballast. Background technique [0002] Due to the serious pollution of the earth's environment, the temperature has risen year by year, and the serious situation has made all countries in the world attach great importance to energy conservation and emission reduction. In 2006, Cuba took the lead in implementing the plan to phase out incandescent lamps in the world; in February 2007, Australia announced relevant regulations to completely ban low-efficiency incandescent lamps; since then, the governments of Canada, the United States, the European Union and other countries and regions have expressed their intention to phase out incandescent lamps. The move to phase out incandescent lamps has swept across the globe. Of course, our country is no exception. According to the comprehensive work plan for energy conservation and emission reduction issued by the State Council, the National...

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Problems solved by technology

[0004] However, the circuits of high-performance and low-distortion electronic ballasts are complex and expensive, which is difficult for domestic consumers to accept and cannot be popularized and applied in my country.

[0005] However, with the further expansion of the energy-saving lighting market, the electronic ballast technology used in my country has been unable to meet the market and energy-saving needs. Primary products, in line with developed countries, so that electronic ballast technology can better exert its energy-saving and emission-reduction effects in China

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