Power supply circuit and input/output module

The power supply circuit is provided with an AC voltage supply unit and one or more Cokroff-worton circuits. The one or more Cokroff-worton circuits include a plurality of output terminals, and the AC voltage is supplied from the AC voltage supply unit to the one or more Cokroff-worton circuits. A plurality of output terminals of the Cokrofft-Wolton circuit are configured so as to output DC potentials that differ for each of those output terminals in accordance with the magnitude of the AC voltage supplied from the AC voltage supply unit. 电源电路具备交流电压供给部和一个以上的科克罗夫特·沃尔顿电路。一个以上的科克罗夫特·沃尔顿电路包含多个输出端子，从交流电压供给部向一个以上的科克罗夫特·沃尔顿电路供给交流电压。科克罗夫特·沃尔顿电路的多个输出端子构成为根据从交流电压供给部供给的交流电压的大小而输出按照那些输出端子中的各输出端子而不同的直流电位。