摘要 |
To improve the power conversion efficiency of a power circuit provided with a power-factor improvement converter and reduce the size, weight, and cost of the circuit, the power-factor improvement converter according to the invention is provided at a stage in front of the switching power circuit, in which a self-excited current resonant switching converter with a simple circuit construction is provided and the switching voltage thereof is fed back to the rectifying path via series resonant circuits so as to improve the power factor.
|