论文部分内容阅读
在此我们介绍一种温度(T)-电压(U)转换的新方法——斩波稳零技术。这种温度-电压转换电路的特点是:灵敏度高,测量范围宽,反映速度快,工作稳定可靠,能在较宽的动态范围内连续自动地补偿零漂。即把模拟开关与集成运放巧妙地设计成失调和漂移几乎为零的所谓斩波稳零式T-U转换装置,以实现自动调零技术。大家知道,一个交流放大电路不能放大直流成分的变化,也基本上没有零点漂移,一个直接耦合放大电路能放大直流成分,但漂移严重。如果把这两个电路的优点结合起来,使其即没有严重的漂移,
Here we introduce a new method of temperature (T) - voltage (U) conversion - chopper zeroing technology. This temperature - voltage conversion circuit is characterized by: high sensitivity, wide measuring range, reflecting the speed, stable and reliable, in a wide dynamic range of continuous automatic compensation for zero drift. That the analog switch and integrated op-amp design cleverly designed to offset and drift almost zero so-called chopper steady-state T-U conversion device to achieve automatic zero technology. We all know that an AC amplification circuit can not amplify the DC component changes, there is basically no zero drift, a direct-coupled amplifier circuit can amplify the DC component, but the drift is serious. If the advantages of these two circuits combine to make it no serious drift,