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'链接已经复制到剪贴板');" type="submit"> <em>复制链接推荐给好友</em></button> <input type="text" class="px vm" onclick="this.select();setCopy(this.value, '链接已经复制到剪贴板');" value="http://www.oecr.com/plugin.php?id=attachcenter:page&aid=20775" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>跪求100MHz微弱光信号（1微瓦左右）的前置放大电路:</b><div class="postmsg">小弟现在求助100MHz微弱光信号（1微瓦左右）的前置放大电路，计划使用滨松公司的S 5971 PIN光电二极管，请您出个建议把，我qq253556608,电话13507482632，不胜感激，谢谢！</div> <div class="postmsg">顶一下，知道技术朋友给建议。<img src="static/image/smiley/default/em28.gif" smilieid="57" border="0" alt="" /> <img src="static/image/smiley/default/em28.gif" smilieid="57" border="0" alt="" /></div> <div class="postmsg">我不知道这个这么做<br /> 所以只好是这样啦<br /> 从精神鼓励下下<br /> 但愿你找到合适的东西<br /> 满足你需要的东西</div> <div class="postmsg">下载的2楼的资料看看吧，多了解一些东西，总有用到的时候</div> <div class="postmsg">avalanche photodiode。电路可以看他们推荐的。如果你只是想得到能量，不是波形，APD很好。对很小的入射，波形也行。大的入射有饱和的问题，需要把光调弱。对高频的信号来说，最好只用贴面的元件。屏蔽也是大问题，需要多考虑多试验几次。</div> <div class="postmsg">下了看看...<img src="static/image/smiley/default/em49.gif" smilieid="78" border="0" alt="" /> <img src="static/image/smiley/default/em49.gif" smilieid="78" border="0" alt="" /> <img src="static/image/smiley/default/em49.gif" smilieid="78" border="0" alt="" /></div> <div class="postmsg">电话联系中电44所，023-62814471 高</div> <div class="postmsg">国内，44所光电方面是行家！如有光电方面的问题可跟他们联系。从激光器到探测器到后续信号的处理。</div> <div class="postmsg">gb936 <br /> <br /> 工程大师<br /> 谢谢你 我也下了</div> <div class="postmsg">我也在做PIN管前置放大电路,不过现在基本搞定了</div> <div class="postmsg">我也在做PIN管前置放大电路,不过现在基本搞定了<br /> 561486937</div> <div class="postmsg">顶哈<br /> ................................<img src="static/image/smiley/default/em26.gif" smilieid="55" border="0" alt="" /> <img src="static/image/smiley/default/em26.gif" smilieid="55" border="0" alt="" /> <img src="static/image/smiley/default/em26.gif" smilieid="55" border="0" alt="" /></div> <div class="postmsg">交流耦合的话接成BIAS－Tee，加一个低噪放大（LNA）就好了</div> <div class="postmsg">谢谢二楼的》》》》》》》》》》》》》</div> <div class="postmsg">44所光电方面是行家！如有光电方面的问题可跟他们联系。从激光器到探测器到后续信号的处理。真的很牛</div> <div class="postmsg">成都的二十九所是最好的光电研究所</div> <div class="postmsg">感觉二楼的文章没有说什么有用的东西，没有参考意义。</div> <div class="postmsg">同6楼一样，建议用雪崩二极管。或者在minicircuits 去买一些小巧的低噪放大器。</div> <div class="postmsg">看看先，这玩意和我还是有点瓜葛的</div> <div class="postmsg">联系我给你解决！宾松一般都配置有驱动电路和采集电路的！</div> <div class="postmsg">呵呵，顺带也学习了~~~~~支持~~~</div> <div class="postmsg">用分离元件做个高频放大电路就行了。输入用高频电容耦合，光电管信号端对地接一电阻，几十到几百欧姆，防止饱和。用示波器测量光电管输出波形及频率是否与发射信号一致。再测放大后的信号，就可以了。</div> <div class="postmsg">2楼的资料看看吧，多了解一些东西，总有用到的时候</div> <div class="postmsg">我感觉那么弱的信号应该用APD雪崩光电管！</div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment last=2025-12-17 09:04:24--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img src="static/image/common/site_qq.jpg" alt="QQ" /></a><span class="pipe">|</span><a 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