电光与控制, 2014, 21 (2): 60, 网络出版: 2014-02-18  

光耦在EMCCD电源中的应用

Application of Optocoupler Circuit in EMCCD Power Supply
作者单位
中国科学院长春光学精密机械与物理研究所,长春130033
摘要
为满足EMCCD供电的特殊要求,基于光耦特性设计了EMCCD供电电源。利用光耦的光电隔离特性实现了输入与控制信号的隔离;利用光耦接收三极管的线性区实现输出电压的连续调整;利用光耦接收三极管的饱和与截止特性实现了上电状态控制;利用高速光电接收二极管及图腾柱电路的高速特性实现了DC-DC电源的同步控制;对各部分光耦电路的温度特性进行了分析,并增加了反馈电路以降低温度影响。实验结果表明,基于光耦的EMCCD电源设计满足应用要求,改进后的输出电压随温度变化率为改进前的8.9%。
Abstract
In order to meet the special requirements of EMCCD, an EMCCD power supply was designed based on optocouplers characteristics.The isolation of the input and control signals was realized by use of the photoelectric isolation characteristic of the optocoupler.The continuous adjustment of the output voltage was achieved by working in the active region of optocouplers receiving transistor.The power-on initial state was controlled by using the saturation and cutoff characteristics of the optocouplers receiving triode.The high-speed optical receiving diode and totem pole circuit were used to achieve the synchronous control of the DC-DC power.The temperature characteristics of optocoupler circuit were analyzed, and feedback circuits were added to reduce the temperature effects.Experiment results show that:1) the EMCCD power supply designed based on optocoupler can meet the application requirements;and 2) the temperature caused change rate of output voltage is 8.9% of the one before improvement.

余达, 刘金国, 薛旭成, 武星星, 李广泽, 周磊, 梅贵. 光耦在EMCCD电源中的应用[J]. 电光与控制, 2014, 21(2): 60. YU Da, LIU Jin-guo, XUE Xu-cheng, WU Xing-xing, LI Guang-ze, ZHOU Lei, MEI Gui. Application of Optocoupler Circuit in EMCCD Power Supply[J]. Electronics Optics & Control, 2014, 21(2): 60.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!