The structure and CTR parameter of photo coupler were illustrated.
文章介绍了光电耦合器结构及其CTR参数,分析红外发光芯片和光敏接收芯片对光耦CTR值影响,重点讨论了工艺上内点胶操作与CTR的关系,提出了内点胶操作所形成光学通道的椭圆模型理论和各种点胶方式,并用实验进行验证和说明。
Comparative study of different optocoupler feedback methods in the design of isolated power supplies;
开关电源中光耦隔离的几种典型接法对比研究
Apply analog optocoupler HCNR201 to check voltages with high accuracy;
模拟光耦器件HCNR201及其在高精度电压检测中的应用
Along with the extensive application of optocoupler element in the secondary equipment of integrated automatic substations,its operating characteristic also needs much attention.
随着光耦元件在综合自动化变电站二次设备中的广泛应用,其工作特性也需要引起特别关注。
Cause and treatment of optical coupler maloperation;
光耦误动原因分析及解决办法
The binary input circuits and some typical misoperations of protections are analyzed,which show that,the overuse of optical coupler in binary input circuit causes lower driving voltage and smaller driving power.
通过对开入量回路构成的各个环节以及多起典型保护误动事例进行分析,表明微机保护开入量回路设计中大量使用的光耦方案,存在动作电压偏低、动作功率偏小等问题,从光耦器件的选择、光耦回路的设计、外部接点的引入到光耦电源的使用等各环节,均应采取一定的安全可靠措施。
This feedback circuit is made of optical coupler and TL431.
该电路采用光耦和电压基准TL431组成反馈网络,具有反馈精度高,动态响应快,实用性强等优点。
Real-time sampling of single battery voltage during charging or discharging is implemented based on AT89S52 control core,AD629 protective circuit,and linear light coupling isolation of disturbing signal.
本文以AT89S52为控制核心,以AD629为保护电路芯片,通过线性光耦隔离干扰信号,实现了充放电过程中单体电池电压的实时采集。
Contrast experiments were carried out on common sampling regulating circuit and linear optocoupler isolation regulating circuit based on HCNR200.
通过对原有常规采样调理电路和基于HCNR200的线性光耦隔离调理电路的抗干扰对比实验,发现隔离电路的结果明显优于常规电路。
First the input signal processed by the high-speed optocoupler and the sample circuit,then 89C55WD using two 32-bit timers surveyed time interval of the seriate pulse in inte.
首先,将输入的信号经过高速光耦合器和采样电路处理;然后,89C55WD在中断方式下利用两个32位计时器交替对连续脉冲信号的间隔时间进行测量。
The operation principle of molded DIP optocoupler and technical difficulties on raising the isolation voltage were introduced.
介绍了研制出其性能达国际先进公司同类产品水平的塑封双列直插式光耦合器的工作原理和提高绝缘耐压的技术难点 ,从引线框架设计、加工精度控制、内包封材料选型、理想内包封形状控制、塑封气密性的实现、环境条件的完善等方面讨论了提高绝缘耐压的设计和工艺要
A fiber coupler with a specific splitting ratio plus multi-stage long period fiber gra.
其关键技术是在抽运源的输出端增加了光耦合器,并在光源输出端插入多级长周期光纤光栅对铒离子的自发光谱进行调制和整形;同时采用光控器和温控器来控制抽运源的输出以提高光源输出功率的稳定性。
The precision adjust method of the optical power in the fiber coupler is analysed and discussed with the three ports fiber coupler.
以 3端口光纤耦合器 (分路器 )为例分析讨论了光纤耦合器的光功率分配精确校正方法 ,该思想方法可用于其他类型光耦合器及其他光器件的校正 。