POWER SOURCE DEVICE AND OPTICAL FIBER FUSION CONNECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a power source device high in quality. SOLUTION: In the power source device wherein a multi-stage voltage doubler rectifying circuit connected to the secondary winding of a step-up transformer stepping up alternating voltage by switching semiconductor element connected to the primary winding side of the step-up transformer and switching of the switching semiconductor element is mounted on one face of a printed circuit board and a current detection circuit is mounted on the other face, a conductive film is provided between the multi-stage voltage doubler rectifying circuit and the current detection circuit, and connected to the connection point of the multi- stage voltage doubler rectifying circuit and the current detection circuit.