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目前模拟乘法器和模拟除法器构成的方法比较多,而常用的有可变转移电导乘法器、三角形平均乘法器、对数相加法乘法器、对数相减法除法器等。现在国内常用的模拟乘法器和模拟除法器的运算精度一般在5%左右。目前数字运算可以达到很高的运算精度,但是必须经过模数变换和数模变换方能使用,因此在自动测量和一些专用设备中,尚需要高精度的模拟运算。本文介绍一种实用的模拟乘法器和模拟除法器,原理简单,装调容勿,运算精度可达0.5%以上。
At present, analog multiplier and analog divider constitute more methods, and commonly used variable transfer conductance multiplier, average multiplier triangle, logarithm addition multiplier, logarithm subtraction divider and so on. Now commonly used analog multiplier and analog divider arithmetic accuracy is generally about 5%. At present, digital arithmetic can achieve high arithmetic precision, but can only be used after analog-digital conversion and digital-analog conversion. Therefore, in automatic measurement and some special-purpose devices, high-precision analog arithmetic is still required. This article describes a practical analog multiplier and analog divider, the principle is simple, install tolerance Do not, the computing accuracy of up to 0.5%.