In most inverters, it is required to obtain ac power with reduced cost. Especially, in power conditioners for small power like photovoltaic power generation, the reduced cost is more important. Because the circuit construction is very simple, so there would be little room to modify its fundamental construction. In such situations, some novel circuit constructions were proposed by the authers. In this procedure, we noticed that this scheme is suitable as simple construction. By means of this system, the conventional inverter could be modified in symple way with reduced conponents. Furthermore, in the development for high frequency inverter circuit, it can be seen that the power transmission process can be reduced satisfactorily. Consequently, the circuit efficiency can be much improved. Operation mechanism is analitically solved by using power transmission flow charts.