3．1 开环增益 （ open loop dc gain ） 开环增益 即开坏差模电压增益，是指运算放人电路正常工作，接入规定负载，无反馈情况下的直流差模增益。
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...电路的稳定性,导致大量过冲、振铃、稳定时间长,情况严重时会造成持续震荡。造成这些问题的原因是电容性负载与运算放大器的输出端阻抗相互作用,在开环增益(Aol)响应中形成一个额外的极点,导致下列可接受级别中的增益(A_(ol)·β)相位裕度减小。
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... 应答机跟踪试验 Tracking test of responder 开环增益 Tracking velocity 跟踪速度 Tracking velocity ...
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VL为输出直流开环增益测量的最小电压，VOL为输出所能达到的绝对电压最小值。
VL is the minimum voltage level at the output in the dc-open-loop-gain measurement, and vol is the absolute minimum voltage level that the output can reach.
文中还强调平衡阀的节流口宜采用线性小增益形式，以利于降低系统开环增益，提高稳定性。
It is also stressed that the orifice of the valve adopting linear, small gain form is suitable to reduce open-loop gain of the system and increase the stability.
第三，轨到轨放大器的输出状态表现出影响开环增益从而影响闭环增益精度的负载增益效应。
Third, rail-to-rail AMPLIFIER OUTPUT stages exhibit load-dependent gain which affects AMPLIFIER open-loop gain, and hence closed-loop gain accuracy.
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