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A POWER SUPPLY APPARATUS, AN ELECTRONIC BALLAST USING THE POWER SUPPLY, AND A SELF-BALLASTED FLUORESCENT LAMP
A POWER SUPPLY APPARATUS, AN ELECTRONIC BALLAST USING THE POWER SUPPLY, AND A SELF-BALLASTED FLUORESCENT LAMP
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机译:电源设备,使用电源的电子镇流器和自镇流的荧光灯
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摘要
A power supply apparatus includes a direct current power source having a pair of terminals. First and second switching elements are connected in series between the pair of terminals of the direct current power. A load circuit, which includes a resonance inductance and a resonance capacitance, receives a high-frequency alternating current generated by a switching of the first and second switching elements. An unsaturated transformer has a first winding connected to the load circuit, and a second winding generating an induced voltage in proportion to a current flowing in the load circuit. A drive resonance circuit includes a capacitance, and an inductance of the second winding. The drive resonance circuit produces a resonance output to cause the first and second switching elements to alternately conduct. The power supply may be used in a ballast for a discharge lamp.
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