Abstract : in recent years , with the successful application of hig h - frequency switching power supply in communication power , there are a lot of con trol circuits for power factor compensation now . in this article , the writer reco mmands a kind of practical and reliable control circuit
2.
The capacitor has advantages of low dissipation , high insulation resistance , good self - healing character , and steady electricity performance , anti - striking current , strong over - carrying capacity , etc . it is assembled sith inner hidden discharge resistance . it is applied in high or low pressure sodium lamp and mercury - arc lamp for the help of power factor compensation
3.
Abstract : this paper analyses principles for power frequency inductive furnace and power factor parallel compensation and three phases balance , deals with processes of power factor compensation and three phases balance for plc automatic power inductive furnace . for saving source and shortening time of smelting and improving electrice net , they will be of great significance
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