摘要
对采用光电二极管的荧光信号接收电路的工作模式和噪声进行了分析,论述了输入失调和暗电流的补偿方法,深入讨论了防泄漏措施、输入管脚的“护卫”、隔离技术和输入管脚的悬置引出技术、PCB板的清洁和隔离涂敷、屏蔽和滤波等技术。
The working mode and noise in fluorescent signals detecting circui2ts by using photodiode were analyzed in this paper. The compensating techniques of input offset and diode＇s dark current were discussed. The method for holding back leakage, the technique for guarding and insulating input pin, the technique for input pin suspending connecting, cleaning and insulating coating of PCB board, the technique for shielding and filtering were researched in detail.
出处
《仪表技术》
2007年第6期3-5,8,共4页
Instrumentation Technology
