The emitter will be of great benefit to reducing the recombination current in emitter region, enhancing short-wave response, making a good ohmic contract and enhancing open circuit voltage. 这种发射极结构有利于减小发射区复合电流、提高短波响应、作好欧姆接触和提高太阳电池的开路电压等优点。
As a result of the computer simulation, the drift curve of hFE with time and the effects of temperature, emitter bias voltage, and base surface potential on the curve are given. 经计算机模拟分析,求得了h(FE)随时间的漂移曲线以及温度、发射结偏压、基区表面势对这种漂移的影响。
The Analog unit performs four tasks, the sensor signal conditioning, AD/ DA, modulation of the infrared emitter and control of the heating voltage for Figaro sensors. 模拟信号处理单元,完成Figaro气体传感器的信号调理和加热电压控制,红外探测器信号调理,红外光源功率驱动,AD采样和DA输出等功能;电机控制和驱动单元,完成小车电机的功率驱动和控制。
It is very useful to judge whether operating mode of a transistor is normal or damaged by testing the emitter junction voltage of the transistor. 测试三极管发射结压降对判断管子工作状态是否正常及管子是否损坏是很有用的。
The electroluminescent devices with a single layer structure was constructed using LaL2 ( H2O) 4Cl as the emitter material. Green-yellow electroluminescence was observed with brightness of ca. 330 cd/ m2 and a low drive voltage of 9 V. 以LaL2(H2O)4Cl的LB膜为发光层的单层电致发光器件的驱动电压为9V,发光亮度330cd/m~2,为黄绿色发光。
In this design, the collector-to-emitter voltage is sensed to determine the directions of the output currents for the 4-step commutation strategy. 该文检测器件集射极电压确定输出电流方向,并据此实现四步换流。
To satisfy the RD of the first automatic measurement system of negative pole emitter uniformity, a further RD of high voltage and narrow pulse power supply and high accuracy steady current power supply for filament in the system switching power supply are carried out in the issue. 为了满足我国第一台阴极发射均匀性自动测量系统的研制要求,本文对系统开关电源部分中的高压窄脉冲电源和灯丝高精度稳流源进行了深入研究和设计。
Diamond is a material of negative electron affinity, which can be used to fabricate electron emitter in FED ( DFED) to reduce the work function, hence reduce the working voltage. 金刚石膜具有负的电子亲和力特性,利用它作为发射器的电子发射材料制成的金刚石膜场发射器,有效功函数很小,因此工作电压可以大大降低。
According to the test it is prove that such a direct drive acoustic emitter can convert the signal with low voltage and power to the signal with high voltage and power to drive the transducer directly. 通过实验表明,直接驱动型水声信号发射系统,能够将低电压电信号以较小的失真放大为高电压信号来直接驱动水声换能器。