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皮安计

网络Picoammeter

皮安计

皮安计

皮安计

Picoammeter

测试测量常用中英大全和中文解析|... ... Fall Time（下降时间）： Picoammeter（ 皮安计）： Precision（精度）： ...

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In such an arrangement, CIN doesn't shunt RFB, and has only a fraction of the effect it would have with a shunt picoammeter.

在这种情况下，CIN 不会对 RFB 分流。其影响与分流皮安计的情况相比是很小的。

3

To measure the offset of a switch card , connect the output of the card to a pico ammeter or electrometer .

若要测量开关卡的偏移电流，请将卡的输出连接到一台皮安计或静电计。

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Since the voltage burden of the electrometer ammeter or picoammeter is less than 1mV, the diodes won't conduct .

由于静电计、安培计或皮安计的输入端压降小于 1mV ，这两个二极管不会导通。

6

Two general types of connectors are used for electrometer, picoammeter, and SMU measurements .

静电计、皮安计和 SMU 的测量工作中使用两种通用类型的连接器。

7

A second set of switches (on the Model 7158 ) connects each capacitor to the pico ammeter after a suitable soak period .

第二组开关（7158 型）在经过合适的平稳时间后将每个电容器连接到皮安计。

8

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。

9

Electrometers, picoammeters, and SMUs may be damaged if excessive voltage is applied to the input .

如果输入端加入过高的电压，静电计、皮安计和 SMU 就可能损坏。

10

Note the top electrode is guarded , so that only current flowing across the insulator is measured by the picoammeter.

注意，顶部的电极接保护，所以只有流经绝缘体表面的电流才为皮安计所测量。

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If this is the case , a simple coaxial vacuum feedthrough can be used to make connections from the collector to the picoammeter.

在这种情况下，可以使用简单的真空同轴接头来进行从收集电极到皮安计的连接。

12

Rise time in a feedback picoammeter is a function of the physical or stray capacitance shunting the feedback resistance (RFB).

反馈型皮安计的上升时间是反馈电阻（RFB ）上并联的物理电容或寄生电容的函数。

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To avoid measurement errors , it's critical to make proper connections from the electrometer , SMU, or picoammeter to the device under test .

为了避免测量误差，关键之点在于将静电计、SMU 或皮安计和被测装置进行适当的连接。

14

The basic configuration of the constant-voltage method using an electrometer or picoammeter is shown in Figure 2-30a.

使用静电计和皮安计的恒压法的基本电路配置如图 2-30a 所示。

15

The resulting speed-up comes from the reduction of the input impedance of the picoammeter due to negative feedback .

速度提高的原因是由于负反馈的作用使皮安计的输入阻抗降低。

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The picoammeter reads the current at the last dynode, which is equal to the anode current minus the current flowing to the previous dynode.

皮安计在最后一个倍增管电极处读取电流，此电流等于阳极电流减去流过前一个倍增管电极的电流。

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Picoammeters and SMUs also have very low input bias currents , although usually not as low as an electrometer 's .

皮安计和 SMU 也具有很低的输入偏置电流，但是通常没有静电计低。

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The voltage across RL1 is the picoammeter voltage burden, normally less than one millivolt, so the resulting current will be quite small .

RL1 上的电压为皮安计的输入端压降，通常小于 1mV ，所以产生的电流是相当小的。

19

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。

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Electrometers, SMUs, and picoammeters can be used with relatively large values of source capacitance .

静电计、SMU 和皮安计等都可以使用比较大的源电容数值。

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