| 摘要 |
In a motor control unit adapted to control each switching element of each switching arm and control the current sent to a motor, the temperature sensing diodes 19a~19c are arranged near the switching elements and a constant current circuit 18 is connected to the temperature sensing diode. An overheat prevention means is also provided to recognize the switching element temperature by detecting a forward voltage value of the diode and to place the switching element in an OFF-state when the switching element is judged to be in an overheat condition based on the recognized temperature of the switching element. |
