摘要 |
The present invention relates to a power supply unit for discharge lamps, comprising a rectifier(3); an oscillator output portion(5); an inductor(1); capacitor(2, 4, 7, 8). And further comprising a sampling resistor(9) and a module (10). It is used to reduce the capacitive impedance at the input end of the circuit, minimising the components of high-order harmonics produced in the circuit, weakening the high-order harmonics of source current to the degree that they no longer impact the power network. <IMAGE>
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