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【论坛精华】光电信号处理用光电二极管做一个距离检测,用A/D采集发射的交流信号电平大小,判断物体距离。因光电二极管在环境光中也有直流电平输出,因此用文中电路隔直滤波,但发现信号顶部失真。http://bbs.ednchina.com/FORUM_POST_13_516614_0.HTM这个充电电路有什么问题我在网上找了一个充电电路做实验。我在C点输入15V,可是绿灯闪,查了一下,电路短路了。15V实际只有2V多。为什么会这样呢?请高手指教,谢谢!
Forum essence Photoelectric signal processing Photodiode to do a distance detection, with A / D acquisition and transmission of the level of the AC signal transmitted to determine the object distance. Because the photodiode in the ambient light also has a DC level output, so with the text of the DC blocking filter, but found the signal distortion at the top. http://bbs.ednchina.com/FORUM_POST_13_516614_0.HTM What is the problem with this charging circuit I am looking for a charging circuit on the Internet to do the experiment. I am at point C input 15V, but the green light flash, check for a moment, the circuit is short-circuited. 15V actually only 2V more. Why does this happen? Please advise experts, thank you!