| 摘要 |
PURPOSE:To control electric power with high accuracy without giving a man an unpleasant feeling by a flicker, by performing a time-division trigger synchronized with zero volt of electric source in accordance with a connection combination of thyristors in which the set load electric power is not fluctuated and DC is not generated. CONSTITUTION:A titled system consists of a counter counting half-wave period of commercial electric source, an electric power setting device setting load electric power and a gate power distributor triggering the gates of (n) pieces of thyristors after inputting these outputting signals. A time-division trigger synchronized with zero volt of electric source in accordance with a connection combination of thyristors in which the set load electric power is not fluctuated and DC is not generated in view of an electric source side to each thyristor, is performed in this distributor. |
