| 摘要 |
PURPOSE:To enhance reliability and simplify constitution by fixing a field effect transistor to a good heat conductive member fitted at the cutout part of a motor bracket and controlling voltage applied to the transistor via the operation of a fan control lever. CONSTITUTION:A part of a motor bracket 31 is cut out for providing a flat plate member 40 in the cutout part and a field effect transistor 19 is fitted to the flat plate member 40. And the gate terminal 19A of the field effect transistor 19 is connected to a variable resistor 1A giving a different resistance value, depending upon the position of a control lever 1 for adjusting motor rotation in the control unit of an automobile air conditioner. According to the aforesaid constitution, voltage applied to the field effect transistor 19 is adjusted by turning the control lever 1 and an electric current flowing to a motor 2 can be controlled steplessly. Consequently, a stepless control can be made with simple constitution. |
