A DC-AC inverter includes a Printed Circuit Board (PCB), a plurality of electronic components, and at least a conductive member. The PCB has a top component side and a bottom soldering side, and a copper foil forming an inverting circuit path. The electronic components are mounted on the component side of the PCB to electrically connect with the copper foil. The conductive member is overlapped on the soldering side of the PCB, wherein the conductive member is electrically connected with the copper foil of the PCB to form a safety route of inverting circuit path for electrically bridging an elevated electric current passing therethrough so as to prevent the copper foil from being damaged by the elevated electric current.