Reflection of a beam of light on the diaphragm falls on a phototransistor. 经膜片反射的光束照射到光敏管上。
As the day slowly progresses, state C is reached shortly, turning on the right phototransistor. 左光电是开启的，造成了一个信号，使电动机的阴影不断，直到从板返回跟踪到B国随着时间慢慢进步， C国达成不久，把右边光电。
Hybrid optical bistable laser is composed of phototransistor and semiconductorlaser diode. Based on this bistable laser,AND. NOR. 用半导体激光器和光晶体管组成了组合光双稳激光器;以不同的电路结构实现了与、或、非、与非、或非光逻辑门.
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. 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 phototransistor was installed through holes in the top of the case, and enclosed in a brass tube that was painted black inside and out. 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 sensor uses infrared emitter and infrared phototransistor produced by SIEMENS to compose the infrared emission circuit and receiving circuit, and disposes receiving signal by single chip. 该传感器采用西门子公司生产的红外发射管和红外接收管,组成红外光发射电路和红外光接收电路,并用单片机处理接收到的信号。
