The buffers can be a pair of JFET op amps or two electrometers with unity-gain outputs.
该缓冲器可以是一对JFET运算放大器或者是两个具有单位增益输出的静电计。
The charge measurement range of most electrometers can be extended using external feedback.
大多数静电计的电荷测量范围可以用外部反馈来扩展。
Some electrometers and picoammeters, however, have a built-in voltage source and are capable of measuring the resistance directly.
然而，有的静电计和皮安计内部装有电压源，能够直接测量电阻。
Some electrometers and picoammeters have voltage sources built into the instrument and automatically can calculate the unknown resistance.
有些静电计和皮安计具有内置的电压源，能够自动地计算出未知电阻。
In modern electrometers, the preamplifier output terminal is such a point, and can be used to reduce the effect of cable leakage, as shown in Figure 2-5.
在现代的静电计中，前置放大器输出端就是这样的一个节点，并可以用来降低电缆泄漏的影响，如图2 - 5所示。
Electrometers use a feedback circuit to measure charge, as shown in Figure 1-16.
静电计使用反馈式电路来测量电荷。如图1 - 16所示。
Electrometers use a feedback circuit to measure charge, as shown in Figure 1-16.
静电计使用反馈式电路来测量电荷。如图1 - 16所示。
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