is the transient thermal impedance at time t and R th(j-c) ’ is the IGBT module’s under chip thermal resistance and can be found on the device datasheet. Using the equation we come up with Z th (5ms) = 0.23.
Part Number:DRV8870 Hi, My customer is using DRV8870. He wants the information of normalized transient thermal impedance as below. Could you give me this like information of DRV8870, please? (Has TI measured that like information?) Best regards, Shimizu...
As CA mortar has much lower acoustic impedance than concrete, for ultrasonic-echo methods, strong reflecting signals can be obtained in the time domain from the concrete–CA mortar interface as well as the concrete–crack interface. For the IE method, the dominant peak frequency in the amplitude...