Patent ID: 7342799

Claim:
A system, comprising: a power converter controlled by switching, and a microsurge suppressor on the side of a load inserted on a power supply line from the power converter to the load, wherein the microsurge suppressor on the side of the load includes a multi-layer printed wiring board on the side of the load provided with a first terminal on the side of the power converter and a second terminal on the side of the load, and a capacitative element for bypassing a surge on the side of the load; a first power wiring and a second power wiring respectively capacitively coupled are formed on a first wiring layer and a second wiring layer of the multi-layer printed wiring board on the side of the load; the first terminal and the second terminal are connected via the first power wiring; the second terminal and a terminal of the load are directly connected; and the capacitative element for bypassing a surge on the side of the load is directly connected to the second terminal and the end on the side of the second terminal of the second power wiring.