光电

" "Experimentally established...the conception of localized light-quanta out of which Einstein got his equation must still be regarded as far from being established.

然而，很难在他已发表的实验文章中找到任何支持自己期望的内容，所以密立根内心的这种冲突发生了细微的变化，他勉强承认爱因斯坦的光电方程在"实验上是成立的"，但是他依然认为"导出光电方程的光量子理论远远没有建立起来

In this study, AlGaN/GaN hetero-junction photo-transistors in detecting ultraviolet spectra have been fabricated and characterized. One of the HPTs features as low-temperature grown GaN insertion layer between based and emitter layers to reduce dark current. The internal gain and response time are also studied for the HPTs with and without the LT-GaN layer.

中文摘要本论文针对氮化镓/氮化铝镓系列异质接面光电晶体作为紫外光波段侦测器之相关制作与研究，包括於磊晶结构中有无插入一层低温成长氮化镓层之两种异质接面光电晶体，并比较其元件讯号放大效果以及响应时间的改变。

The feedback resistance, R1, is dependent on cell sensitivity and should be chosen for either maximum dynamic range or for a desired scale factor. R2 is elective: in the case of photovoltaic cells or of photodiodes, it is not required in the case of photoconductive cells, it should be chosen to minimize bias current error over the operating range.

反馈电阻R1的取值由电池的灵敏度和要求的最大动态范围，或者需要的电流——电压转换比例决定。R2分情况选取：在光电池和光电二极管时不需要这个电阻，在光电导的时候，电阻的阻值应该能使在工作范围内，由OP输入偏置电流所带来的误差最小。

It has comprehensive application value in army and civil field.

机载光电稳定平台系统能隔离机体的运动，稳定光电探测器的视轴，实现对目标的观察和跟踪，在军民用领域有着广泛的应用价值。

A banknote recognition photoelectric system based on grating spectrometer was developed, in which aphotomultiplier tube was used as a detector and a computer sampling interface was designed by VC++ language.

以光栅光谱仪为基础，光电倍增管作为探测器，运用VC++语言设计了计算机采样界面，形成了荧光光谱分析的钞票识别光电系统。

One type is the iconoscope.

一种是光电摄象管，它有三个基本部件--嵌镶光电阳极、集电环和电子枪。

The oxygen life indictor is an open-loop system made up of the step motor with a photoelectric switch .

仿真氧气生命指示器采用步进电机驱动和光电开关定位开环控制系统，在设计和实现中成功地解决了指示器盘面刻度非均匀的问题，并解决了光电开关确定零位问题和限位问题。

An optic-electric measurement system for measuring voltage distribution along the HVDC converter valve , consisting of the transmitter, light route and receiver, is developed.

设计了一种用于测量换流阀晶闸管电压分布的光电测量系统，该光电测量系统主要由探头、发射电路、接收电路 3部分组成。

A resistor is connected between the output end of the live wire and the output end of the earth wire, another resistor is connected between the output end of the null line and the input end of the earth wire, a neon lamp in a photoelectric coupling switch is connected at the two ends of the earth wire switch in parallel after being connected with the resistors in series, one end of a light sensitive resistor in the photoelectric coupling switch GR2 is connected with the anode DC+ of an integrated circuit IC power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the triggering pole of the silicon-controlled rectifier SCR in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box.

一种防止地线触点未导通的全能安全插头，包括各带开关的地、零、相三线接线和由零序互感器、脱扣器、放大器、整流器、试验回路和可控硅组成的漏电保护器，所述的火线输出端、地线输出端间连接电阻，所述的零线输出端、地线输入端间串接电阻，光电耦合开关内的氖灯与电阻串联后并联在地线开关两端，光电耦合开关GR2内光敏电阻的一端与漏电保护器内的集成电路IC电源正极DC＋连接、光敏电阻的另一端与二极管D3的正极连接，二极管D3的负极与漏电保护器内的可控硅SCR触发极连接，氖灯和光敏电阻置于暗箱中，暗箱上开一避开光敏电阻的小孔。

Next, the following points are emphasized:(1) The design of photoelectric conversion preamplifier circuit. In order to improve the measurement accuracy of luminometer and ensure linear relationship of the photoelectric, operational amplifiers is designed as current-voltage converter form, on the one hand, it is available to zero-load effect; on the other hand, short-circuit current can be transformed into a voltage volume through the feedback resistor, it is equivalent to voltage drop flowed through a load resistor on the actual effect.

其次，本文重点做了以下工作：(1)光电转换前置放大电路的设计：为了提高照度计的测量准确度，确保光电间的线性关系，本设计把运算放大器接成电流电压变换器的形式，一方面可得到零负载效应；另一方面，短路电流通过反馈电阻变成电压量，实际效果相当于流过一个负载电阻形成的压降。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。