| 摘要 |
PROBLEM TO BE SOLVED: To provide a control circuit which precludes intrusion of noise from the outside and radiation noise from a substrate by reducing the mount space of the substrate by integrating a variable DC voltage circuit, an inverter circuit and a control circuit all into the substrate. SOLUTION: In a dishwasher which washes dishes by jetting water pressurized by a pump driven by a motor toward the dishes contained in a washer tank surrounded with an exterior frame and an opening door, the motor is a DC brushless motor driven by an inverter circuit. A variable DC voltage circuit which changes the DC voltage to be supplied to the inverter, the control circuit which controls the variable DC voltage circuit, and a substrate which integrates the variable DC voltage circuit, the inverter circuit and the control circuit into one body are provided. |
