电流的

This high voltage electrostatic precipitation controller has 7 channels of analog input,2 channels of analog output, 12 digital inputs and 16 digital outputs. The analog input includes primary current, secondary current, primary voltage, secondary voltage, etc. Controller uses MAX 187 as the A/D converter, which ensure the sampling speed and the conversion precision in the same time. The processor unit is RCM2250 module. Rabit 2000 processor, a 128K SRAM and a 256K Flash Rom are integrated in RCM2250, which improves the performance of pricipitation controller. MAX504 is used to produce the 4~20mA current output.

模拟量输入采集的信号有升压变压器一次电流、一次电压、二次电流、二次电压等，采用12位逐次比较式A/D转换器MAX187，兼顾采样速率和转换精度；中央处理单元采用以8位嵌入式处理器Rabbit2000为基础的RCM2250模块，外扩128KSRAM和256K Flash ROM，内部资源丰富，提高了控制器的整体性能；模拟量输出采用内带基准源的10位电压输出数模转换器MAX504，实现了标准4～20mA电流信号输出；控制器通过控制算法在相应开关量点上输出可控硅的触发脉冲。

But in achieving the current-voltage conversion, with the current-voltage feedback circuit we may reach the goal in the feedback resistance using, namely premise the photoelectric current certainly, the feedback resistance is bigger, the voltage is greater.

但是在实现电流-电压转换的时候，用的电流-电压反馈电路，我们可以在反馈电阻的使用上达到目的，即在光电二极管的光电流一定的前提下，反馈电阻越大，电压越大。

The relations of inducing skin current of shielding layer, core voltage and core current with the environment field were obtained. The change of shield layer current wave with grounding state of external shield and core voltage with loading resistance was analyzed. According to the dependence of shield layer current oscillating frequency on electromagnetic wave propagation velocity, conception of transporting line of shield layer-ground with equivalent relative dielectric constant was presented. fited equation of equivalent relative dielectric constant with change of cable height was given.

试验得到九芯电缆屏蔽层感应电流、芯线感应电压、芯线感应电流以及环境场之间的关系；分析了皮电流波形随外皮接地状态的变化，芯电压随负载电阻的变化；基于皮电流振荡频率与电磁波传播速度的关系，提出了屏蔽层-大地"传输线"等效相对介电常数概念，给出了等效相对介电常数随电缆高度变化的拟合式；皮电流计算与测量结果在波形、振荡周期、衰减规律等方面有较好的一致性。

The input offset voltage is fixed for a particular amplifier, however the contribution due to input bias current is dependent on the circuit configuration used. For minimum offset voltage at the amplifier input without circuit adjustment the source resistance for both inputs should be equal.

对于一个给定的OP，输入失调电压就已经给定了，但是由输入失调电流所带来的失调电压与所采用的电路结构有关系为了减小输入偏置电流所带来的失调电压，应该使得使得同、反相输入端对地的直流电阻相等，使得由于偏置电流在输入电阻上压降所带来的失调电压相互抵消。

While 30μmol·〓 FRCRSFa and 10μmol·〓 E-4031 were dialysed intracellularly via the patch-pipette, FRCRSFa significantly decreased 〓 exchange current and there was no the further decrease after adding FRCRSFa in the perfused solution with the same concentration, whereas E-4031 dialysed had no effect on 〓 exchange current, but a obvious increase of it occurred when adding E-4031 to the perfused solusion with the same concentration.

分别将30μmol·〓的FRCRSFa和10μmol·〓的E-4031加入微电极内液中，FRCRSFa显著抑制了〓交换电流，当在细胞外灌流液中加入同样浓度的FRCRSFa时无进一步抑制；而胞浆内的E-4031对〓交换电流无显著作用，而在灌流液中加入同样浓度的E-4031后，却显著增强了〓交换电流。

An interesting and often-used circuit applying the bipolar junction transistor is the so-called current mirror, which serves as a simple current regulator, supplying nearly constant current to a load over a wide range of load resistances.

一个有趣且常用的双极型晶体管电路就是所谓的电流镜。这是一个简单的电流调整器，可以为很宽的负载范围提供几乎恒定的电流。

Secondly, contraposes the limitation of the traditional harmonic current detecting method based on neural network, presents the method that combines the neural network and auto adaptive harmonic current detecting method based on the principle of noise each other eliminating.As the characteristics that are small calculative quantity, fast converge, without local minimal point of Redial Basis Function, this dissertation forms a new harmonic current detecting method based on RBF.

其次，针对传统的谐波电流检测方法的缺陷，提出将神经网络与基于噪声抵消原理的自适应谐波检测相结合，利用径向基函数运算量小、收敛快、无局部极小值等优点，构造了一种基于径向基函数神经网络的谐波电流检测方法，仿真结果表明该检测方法具有很好的动态响应及畸变电流检测精度。

The ignition of this electric current in the regulation when the dot is released with onefold weaveform, and the primary coil that electric current has shed ignition coil, tall voltage electricity produces in the secondary coil induction of ignition coil, its are to be in as a result intense scintilla bursts forth in sparkplug clearance.

此电流在规定的点火正时点以单一的波形被释放，而电流流过点火线圈的初级线圈，在点火线圈的次级线圈感应产生高电压电流，其结果是在火花塞间隙中迸发强烈的火花。

According to More Effect,when the Hore component is placed in a gradient field,at the same time the direction of the current is perpendicular to the direction of the voltage,then between the two parallel side face come out the Hore voltage. When Hore component is set in this kind of uni-gradient magnetic field and the electric current is unchanged,the voltage output of Hore component will be proportional to the position of the Hore component in the magnetic field.

根据霍尔效应可知，置于磁场中的霍尔元件若电流方向与磁场方向垂直，则在霍尔元件垂直于磁场和电流方向的两个侧面将产生电势，将霍尔元件置于强度随空间位置线性变化的磁场中，且控制电流恒定，输出就正比于霍尔元件处于磁场中的位置，因此可以用霍尔元件来测量磁场与霍尔元件间的相对位移量。

To solve this problem, according to the analysis of the quality factors of the X-ray, the measurement for X-ray tube voltage/current is presented based on Q-factor and its derived QL and QH-factor when X-ray tube energy bandwidth is defined.

针对传统的管电压/管电流测量方法虽然可以检测出X射线管电压/管电流误差值，但不能反映其质量特征的状况，在分析影响X射线质量高低的因素的基础上，引入了射线管能量带宽的含义，并由此提出了基于Q值及其派生QL值、QH值的射线管电压/管电流分析方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。