| 摘要 |
PURPOSE:To reduce the difference of a burden power factor so as to meet the requirements obliged for an approval for a special approval system by connecting a choke coil in parallel with a secondary side winding of a transformer for electric source. CONSTITUTION:The choke coils 15, 16 are connected with the secondary side of the transformers 11a, 11b for the electric source in parallel to a load respectively. The relation of the inductance between coils 15, 16 is that the inductance of the choke coil 15 connected with the secondary side of the transformer 11a for electric source is below the inductance of the choke coil 16 connected with the secondary side of the transformer 11b for electric source. By this method, a phase angle of an electric source circuit is enlarged and the requirements obliged for an approval for the special approval system is satisfied. |
