picoammeter
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英
例句
The measured current is usually quite small, so a picoammeter or electrometer is often required to make the measurement.
測得的電流通常非常小，因此往往需要使用皮安計或靜電計進行測量。
The main advantage of a logarithmic picoammeter is its ability to follow current changes over several decades without range changing.
對數皮安表的主要優點是能夠在幾個數量級的范圍內跟蹤電流的變化，而無須改變量程。
In such an arrangement, CIN doesn't shunt RFB, and has only a fraction of the effect it would have with a shunt picoammeter.
在這種情況下，CIN不會對RFB分流。其影響與分流皮安計的情況相比是很小的。
The low input voltage drop (voltage burden) of such a picoammeter keeps the anode at virtually ground potential.
皮安計具有很低的輸入電壓降（輸入端壓降），這就使得陽極實際上處于地電位。
Since the voltage burden of the electrometer ammeter or picoammeter is less than 1mV, the diodes won't conduct.
由于靜電計、安培計或皮安計的輸入端壓降小于1mV，這兩個二極管不會導通。
Two general types of connectors are used for electrometer, picoammeter, and SMU measurements.
靜電計、皮安計和SMU的測量工作中使用兩種通用類型的連接器。
A basic approach to high speed measurements is to minimize stray shunting capacitance through careful mechanical design of the picoammeter.
實現高速測量的基本方法是，仔細地進行皮安表的機械設計以盡量減少寄生并聯電容。
Note the top electrode is guarded, so that only current flowing across the insulator is measured by the picoammeter.
注意，頂部的電極接保護，所以只有流經絕緣體表面的電流才為皮安計所測量。
If this is the case, a simple coaxial vacuum feedthrough can be used to make connections from the collector to the picoammeter.
在這種情況下，可以使用簡單的真空同軸接頭來進行從收集電極到皮安計的連接。
Rise time in a feedback picoammeter is a function of the physical or stray capacitance shunting the feedback resistance (RFB).
反饋型皮安計的上升時間是反饋電阻（RFB）上并聯的物理電容或寄生電容的函數。
To avoid measurement errors, it's critical to make proper connections from the electrometer, SMU, or picoammeter to the device under test.
為了避免測量誤差，關鍵之點在于將靜電計、SMU或皮安計和被測裝置進行適當的連接。
The basic configuration of the constant-voltage method using an electrometer or picoammeter is shown in Figure 2-30a.
使用靜電計和皮安計的恒壓法的基本電路配置如圖2-30a所示。
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負反饋的作用使皮安計的輸入阻抗降低。
The picoammeter reads the current at the last dynode, which is equal to the anode current minus the current flowing to the previous dynode.
皮安計在最后一個倍增管電極處讀取電流，此電流等于陽極電流減去流過前一個倍增管電極的電流。
The voltage across RL1 is the picoammeter voltage burden, normally less than one millivolt, so the resulting current will be quite small.
RL1上的電壓為皮安計的輸入端壓降，通常小于1mV，所以產生的電流是相當小的。
Figure 2-24 shows a protection circuit for an electrometer ammeter or picoammeter, consisting of a resistor and two diodes (1N3595).
圖2-24示出靜電計或皮安計的過載保護電路，其中包括一個電阻器和兩個二極管（1N3595）。
Given that the offset current may be hundreds of picoamps or less, an electrometer or picoammeter is required to measure it.
給出的偏移電流技術指標可能為幾百皮安或更小，需要利用靜電計或皮安計進行測量。
With this connection method, the picoammeter reads a negative current.
采用這種連接方法時，皮安計讀出的電流為負值。
Second, the diode minimizes the picoammeter noise introduced when measuring capacitors of 1nF or greater.
第二，在測量1nF或更大的電容器時，二極管將皮安計的噪聲降至最低。
Note that before the capacitor is switched to the picoammeter, the capacitor is connected to circuit LO.
請注意，在電容器被切換至皮安計之前，它是被連接到電路LO的。
The picoammeter is commonly used as a readout because of its high sensitivity.
由于皮安計具有很高的靈敏度，所以通常用作陽極電流的讀出裝置。
Figure 4 - 16 shows a Model 6485 Picoammeter measuring the current from the ion collector, which is operating at ground potential.
圖4-16示出6485型皮安計從離子收集電極測量電流的情況，這時儀器工作在地電位。
