Abstract: A plasma generator capable of adjusting the amount of plasma generation in a simple configuration includes a control circuit controlling a frequency of an AC power supplied to a piezoelectric transformer and a control signal generation circuit providing a control signal to the control circuit. The plasma generator is configured so that the control signal output from the control signal generation circuit is appropriately adjusted. The control circuit controls the frequency of the AC power so as to bring a target value, which is set based on the control signal provided from the control signal generation circuit.

Abstract: A plasma generator capable of adjusting the amount of plasma generation in a simple configuration includes a control circuit controlling a frequency of an AC power supplied to a piezoelectric transformer and a control signal generation circuit providing a control signal to the control circuit. The plasma generator is configured so that the control signal output from the control signal generation circuit is appropriately adjusted. The control circuit controls the frequency of the AC power so as to bring a target value, which is set based on the control signal provided from the control signal generation circuit.

Abstract: A system in which blocks are classified into one or more fixed shape blocks in which terminal positions are previously determined and one or more variable shape blocks in which terminal positions are changeable. The system includes an initial terminal assign section for provisionally assigning terminal positions relating to the variable shape blocks for the purpose of minimizing the total length of the wirings; and a terminal distribution and assign section for evaluating the provisionally assigned terminal positions and for distributing the provisionally assigned terminal positions on the basis of the evaluation.