针对变频器输出频率显示信号中的高频噪声，设计了相应的噪声消除电路，给出了进一步提高系统抗干扰能力的措施。
According to the high frequency noise of inverter output frequency display signal, the noise absorbing circuit is designed, the measures of reducing noise are presented.
本论文设计了高速线阵CCD的驱动电路，并采用相关双取样的方法消除噪声。
The paper design a driving circuit of high speed linear CCD, and adopt correlation double sampling method to decrease the noise.
柱面散光轴位角进行手动测量，数码显示的数字化屈光度测量仪。本仪器采用特殊的处理电路，消除了外来噪声产生的误触发脉冲及输出错误积累而引起的位置偏移。
This instrument has a rotary encoding and raster and it has a special processing circuit not only eliminating trigger pulse case by noise but also clearing up position accumulates error.
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