 and the other terminal of the switch 000 is connected to a positive line 00. One terminal of the switch 000 is supplied with the sustaining voltage Vs and the other terminal of the switch 000 is connected to the positive line 00. One terminal of the switch 000 is connected to a negative line 00 and the other terminal of the switch 000 is connected to a ground. One terminal of the switch 000 is supplied with the s