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针对一般单端反激式开关电源存在的输入端功率因数低、谐波成份大的缺点，提出了无输入滤波电容的高功率因数单端反激式开关电源，并对其进行了理论分析和实验研究。
Aiming at the shortcomings of low power factor and large harmonic component of input single-ended flyback switching power supply, a high power factor single-ended flyback switching power supply with no input filter capacitor is proposed and analyzed theoretically Experimental Study.