如第2.3.2节所述，电容器的容抗随着频率的增加而降低，这就会增加反馈电流表的增益。
As discussed in Section 2.3.2, the decreasing reactance of the capacitor with increasing frequency will increase the gain of the feedback ammeter.
为了保证低泄漏电流和低介电吸收，反馈电容器应当由合适的介电材料(如聚苯乙烯、聚丙烯或聚四氟乙烯)制成。
To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.
所以输出电压可以用来度量输入电流，总的灵敏度由反馈电阻器（RF）决定。
Thus, the output voltage is a measure of input current, and overall sensitivity is determined by the feedback resistor RF).
借助输出电压采样和霍尔元件，设计了电流、电压反馈电路，形成了闭环控制系统。
A closed loop control system is formed by current and Voltage feedback system by means of HALL sensor and potentiometer.
同时为了保证测量精度，采用偏置电流极低的运算放大器opa128，并且增大了反馈电阻，以增强对弱信号的响应。
An OPA128 operational amplifier with extreme low bias current and big gain is adopted for enhancing the response to weak signals.
电流在反馈电阻上产生的电压超出设定值时，IR 2132启动内部保护电路，关断输出通道，实现电流保护。
When the voltage on the feedback resistance over the designed value, the inside protection circuit was operated and the output channels were cut in IR2132 to achieve current protection.
通过分析电流串联负反馈对电路的噪声影响，给出该反馈电路的低噪声化条件。
By analyzing the series electric circuit negative feedback conditions to reduce its noise effect are proposed.
通过分析电流串联负反馈对电路的噪声影响，给出该反馈电路的低噪声化条件。
By analyzing the series electric circuit negative feedback conditions to reduce its noise effect are proposed.
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