The paper introduced the method of measuring Plank's constant by determining the cut-off voltage in photoelectric effect experiment.
本文简单介绍了光电效应测普朗克常数实验的基本原理及测量截止电压的三种方法。
This paper briefly introduces the basic principles to measure plancks constant by photoemission and the three methods to measure cut-off voltage.
介绍了光电效应实验中通过确定截止电压测量普朗克常数的方法，并分析了实验中产生误差的原因，指出减小误差的方法。
The main control system includes the synchronous signal generating circuit, the testing circuit of thyristor cut-off voltage and the trigger circuit of the thyristors etc.
论述了主要硬件电路的设计方案，其中包括晶闸管两端电压检测、三相电源同步信号检测等。
We found by the three-electrode experimental cell, deposition of metallic lithium during low-temperature charging is related to electrolyte, charging rate, cut-off voltage and so on.
通过三电极电池研究发现，锂离子电池在低温充电过程中出现的金属锂的沉积与电解液种类、充电倍率和截止电压等因素有关。
Cut off power supply check signal the feedback loop is switched on, the voltage is normal or not.
切断电源检查信号反馈回路是否接通，电压是否正常。
Advanced voltage clamping techniques are demonstrated, which can also limit the second voltage spike originating from the tail current cut off.
可以证明，采用先进的电压箝位技术能够限制因关断拖尾电流而引起的第二个电压尖峰。
On the grounds of the pinch-off voltage, the cut-off point of variable resistance area and saturation area can be fixed, so the field effect tube can reliably work in the saturation area.
根据夹断电压能确定可变电阻区与饱和区的分界点，使场效应管可靠地工作在饱和区的原理。
If the charge voltage of current is too high and cause overload, the function of overload protection can cut off output power . It may resume automatic after release from overload.
在充电过种中若充电电流太大或充电电压过高引起机器过载时，本机的过载保护会将输出断开，待过载解除后，自动恢复。
The cut-off frequency of improved inverter output filter can be set higher to ensure the bandwidth of control system and improve the waveform quality of inverter output voltage.
改进后逆变器输出滤波器的截止频率可以取较高值，保证足够的控制系统带宽，有效提高逆变器输出电压波形质量。
The line voltage polarity detection circuit detects the polarity of line voltage and controls the drive circuit to conduct or cut off the gate-controlled transistor.
该线电压极性检测电路检测线电压的 极性且控制该驱动电路以导通或截止该栅控晶体管。
When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
According to "virtual short" and "virtual-off" feature, available to the circuit passband voltage gain and pass-band cut-off frequency.
根据“虚短”和“虚断”的特点，可得到电路的通带电压放大倍数和通带截止频率。
The system adopted some over-current, over-voltage protection and current cut-off feedback circuits to improve systems reliability.
过 压保护和电流截止负反馈等电路来提高运行可靠性。
The charging equilibration time constant decreases with the beam intensity and the thickness of the sample. The surface voltage decays slowly when the electron beam is cut off.
在一定条件下，样品表面电位随着辐照电子束流密度和样品厚度的增加而增大；
The charging equilibration time constant decreases with the beam intensity and the thickness of the sample. The surface voltage decays slowly when the electron beam is cut off.
在一定条件下，样品表面电位随着辐照电子束流密度和样品厚度的增加而增大；
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