Phase control circuit of capacitor currents and its parallel driving characteristics

The phase control method of capacitor currents makes it easy for the capacitor to be connected to the ac source and disconnected from it without spike current, moreover, causes no residual electric potential when disconnected. Therefore, this method is useful for a switch of capacitor currents. We got good results of superposed currents and switching characteristics by driving plural phase control circuits of capacitor currents in parallel, of which conduction phase sections were forced to be different.