1、前言为保证电子设备满意地工作,就必须使其中所装电子器件处于一定的温度范围内。这一方面是由于电子器件的特性对温度很敏感,温度会影响回路的功能,另一方面是由于温度过高时使器件的寿命缩短并使可靠性显著下降。在设计电子设备时,为保障达到回路工作稳定而可靠的温度范围所采取的步骤称为热设计。 1, Preface To ensure the satisfactory operation of electronic equipment, it must be installed in the electronic device which is in a certain temperature range. This is due in part to the sensitivity of electronic devices to temperature, the temperature affecting the function of the circuit and, on the other hand, the shortened lifetime of the device resulting in a significant decrease in reliability over temperature. When designing electronic equipment, the steps taken to ensure a stable and reliable temperature range for loop operation are called thermal designs.