Pulse signal of proportional amplifier is sent to counter after reduced noise by window voltage comparer.
经比例放大器放大后的脉冲信号经窗口电压比较放大器消除干扰给计数器。
Some teaching material treat that the integrated operational amplifier which makes up the voltage comparer only works in the nonlinear area.
在一些教材中论述，构成电压比较器的集成运算放大器仅仅是工作在非线性区。
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