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光耦，光电晶体管输出，基地连接。Optocoupler, Phototransistor Output, With Base Connection.

一开始会讨论传统型光电晶体和光二极体。The conventional phototransistor and photodiode are discussed first.

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经膜片反射的光束照射到光敏管上。Reflection of a beam of light on the diaphragm falls on a phototransistor.

我们发现传统型光电晶体有著良好的响应度但伴随著较差的速度性能。We find that the conventional phototransistor has a good responsivity but lower speed performance.

光敏三极管与发光二极管沿径向安装于端盖上形成测量头。The phototransistor and the light emitting diode are arranged on the end cover along a radical direction to form a measurement head.

该光敏三极管是通过安装在洞上方的情况下，密封在一个黄铜管，这是手绘的黑色内。The phototransistor was installed through holes in the top of the case, and enclosed in a brass tube that was painted black inside and out.

设计方案中，主要采用AD590和光敏三极管作为检测单元，并运用了MC14433、74LS160等集成器件。The Design project with the main use of AD590 and phototransistor as a test unit has still used the MC14433, 74LS160, such as integrated device.

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LA268防尘透射型光断续器，结合高功率红外发光二极管具有高敏感的光电晶体管，适于高度精确位置传感。LA268is a transmission type photointerrupter , combined high power infrared LED with high sensitive phototransistor , suitable for highly presice position sensing.

本文介绍了注入光敏器件的物理基础、注入光敏三极管的基本结构和特性。The physical fundamentals of the injecting photosensitive device, the basic configuration and characteristics of the injecting phototransistor have been introduced.

探讨并分析具有光致负阻特性的双极型硅光电三极管阵列中各单元器件设置偏流隔离电阻的必要性。The necessity of setting the bias current and segregation resistances in every element of bipolar silicon photo-negative resistance phototransistor array is studied and analysed.

本文采用小功率红外发光管作光源，用光敏二级管作光接收器件，建立了高灵敏度的光波通信系统。In this paper, a high-sensitivity lightwave communication system is set up by using a mini-power near-infrared LED as a light emitter, a phototransistor as a photoelectric receiver.