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src="static/image/common/rec_subtract.gif" alt="反对" />反对<span id="recommendv_subtract">0</span></i></a> </div> </td> <td valign="top" class="album_side_r"> <div class="album_side"> <div class="hm mtn mbn"> <a href="http://club.oecr.com/space-uid-125840.html" target="_blank" class="xi2"><img src="http://www.oecr.com/uc_server/avatar.php?uid=125840&size=small" /></a> <span class="tit_author"> <a href="http://club.oecr.com/space-uid-125840.html">qihua</a> </span> </div> <div class="date"><span>发布时间:</span> 2012-4-27 22:25</div> <div class="album_info"> <h3>正文摘要: </h3> <p>由于本人能力和知识有限，希望有能力的兄弟帮忙看看这一个电路： 要求不是很难：把光信号转换成电信号，再低通滤波（0-300HZ），再放大(能输出1-5V左右)！ 大家看看有没有什么问题，有问题请提出来！万分感谢！ ...</p> </div> </div> </td> </tr> </table> </div> </div> <div class="bm vw pl" id="comment"> <div class="bm_h cl"> <h2>回复</h2> </div> <div class="bm_c"> <div id="postlistreply" class="xld xlda mbm"><div id="post_new" class="viewthread_table" style="display: none"></div></div><div id="post_1029930" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-142864.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=142864&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-142864.html" target="_blank" class="xi2">qjtrade2012</a><em id="author_1029930"> 发表于</em> <span class="xg1 xw0">2012-8-10 11:23:44</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1029930"> <img src="static/image/smiley/Tiger/14.gif" smilieid="152" border="0" alt="" />看得一头雾水！<img src="static/image/smiley/Tiger/02.gif" smilieid="140" border="0" alt="" /></td></tr></table> </div> <div id="comment_1029930" class="cm"> </div> <div id="post_rate_div_1029930"></div> </div> </dd> </dl> </div> <div id="post_1028871" class="xld xlda mbm"><dl class="bbda cl"> <dd class="m avt"><a href="http://club.oecr.com/space-uid-139269.html"><img src="http://www.oecr.com/uc_server/avatar.php?uid=139269&size=small" /></a></dd> <dt> <span class="y xw0"> </span> <a href="http://club.oecr.com/space-uid-139269.html" target="_blank" class="xi2">hhuguodong</a><em id="author_1028871"> 发表于</em> <span class="xg1 xw0">2012-8-4 08:13:58</span> </dt> <dd class="z"><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1028871"> 不知道你这个PIN的型号是什么样的。在设计PIN的I/V转换的跨导放大器时时候要注意PIN的结电容和OP07的输入电容以及带宽决定了前置放大的相位裕度，以及前置级的I/V转换放大器也就是你用的OP07跨接的R1所需要并联的电容值的大小。你这样直接跨接一个R1（20K）肯定是有问题的，不能保证相位裕度和稳定性。这个跨接电容的要根据PIN、放大器和R1计算出来的。</td></tr></table> </div> <div id="comment_1028871" class="cm"> </div> <div id="post_rate_div_1028871"></div> </div> </dd> </dl> </div> </div> </div> </div> <script type="text/javascript"> new lazyload(); </script> <div class="wp mtn"> <!--[diy=diy3]--><div id="diy3" class="area"></div><!--[/diy]--> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div 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