It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
该方案能在80 ~ 265 V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
Note: in the car, home, office use, domestic use of 220 V AC, cars that use 12 V DC.
说明：可在汽车、家居、办公室使用，家用使用220v交流，汽车上使用12 V直流。
The effect of insulator surface charges on DC corona initial voltage and V-I characteristic in non-uniform field is studied.
研究了固体绝缘表面电荷对不均匀电场直流电晕起始电压、伏安特性的影响。
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