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对晶体管线性电路增益的温度敏感性,目前大多采用热敏电阻来作温度补偿。本文针对热敏电阻补偿法存在的种种不可克服的缺点,提出称之为e-b结补偿的方法。这个方法基于控制e结动态电阻r_e的热敏特性,从而可以利用r_e本身来代替外接热敏电阻,达到温度补偿的目的。 本文导出了控制r_e热敏特性的数学模型(为一超越方程),给出我们在某雷达中放上的一个实际使用例子的计算数据,结果说明这个方法是行之有效的。
Temperature sensitivity of transistor linear circuit gain, most of the current use of thermistors for temperature compensation. In this paper, thermocouple compensation method for the existence of all kinds of insurmountable shortcomings, put forward the so-called e-b junction compensation method. This method is based on the thermal characteristics of the control of the dynamic resistance r_e e junction, which can use r_e itself instead of an external thermistor, to achieve the purpose of temperature compensation. In this paper, we derive a mathematical model (as a transcendental equation) that controls the thermal characteristics of r_e, and give the calculation data of a real-used example that we put in a radar. The results show that this method is effective.