hayas
发表于 2007-1-20 14:17
<div class="quote"><b>以下是引用<i>CrazyLED</i>在2007-01-20 13:51:21的发言：</b><br /><p></p><p></p><p></p><p>本来就是一样的颜色</p><p>LZ应该找台好点的相机来拍</p></div><p>已经说过了,做工和手感不错.不可能为了这个我还去上个单反</p>
joy555
发表于 2007-1-20 14:17
只有楼主一人收到了呀？
电手
发表于 2007-1-20 15:14
<div class="quote"><b>以下是引用<i>mioa</i>在2007-01-20 12:59:47的发言：</b><br /><p>LED封装里面的小线不是铜的.是金.你没有看错.是纯金制成.电阻比铜低很多,也不容易氧化.</p></div><p></p>谁告诉你的金电阻比铜低的??你去查查金属的电阻率.[此帖子已经被作者于1169277837编辑过]
hayas
发表于 2007-1-20 15:23
<p><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td align="center"><p></p><div class="title">金属电阻率及其温度系数</div><p></p><p></p><div class="bt_content"></div><p></p></td></tr><tr valign="top"><td><div class="bt_content"><font lang="ZH-CN" face="宋体"><p style="text-indent:2em"> <table width="90%" align="center" border="0"><tbody><tr><td><div align="center"><center><table bordercolor="#000080" height="724" cellspacing="1" cellpadding="7" width="84%" align="center" border="1"><tbody><tr><td valign="middle" align="center" width="8%" bgcolor="#c0c0c0" height="25"><strong>物质</strong></td><td valign="middle" align="center" width="14%" bgcolor="#c0c0c0" height="25"><strong>温度t/<font face="宋体" size="3">℃</font></strong></td><td valign="middle" align="center" width="27%" bgcolor="#c0c0c0" height="25"><strong>电阻率<img alt="" hspace="0" src="http://www.pep.com.cn/images/200406/pic_101972.gif" align="baseline" border="0" /><font face="宋体" size="3"></font></strong></td><td valign="middle" align="center" width="30%" bgcolor="#c0c0c0" height="25"><strong>电阻温度系数a<sub>R</sub>/<font face="宋体" size="3">℃<sup>-1</sup></font></strong></td></tr><tr><td valign="top" align="center" width="8%" height="16">银</td><td valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">1.586</td><td valign="top" align="center" width="30%" height="16">0.0038(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铜</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">1.678</td><td valign="top" align="center" width="30%" height="16">0.00393(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">金</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">2.40</td><td valign="top" align="center" width="30%" height="16">0.00324(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铝</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">2.6548</td><td valign="top" align="center" width="30%" height="16">0.00429(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">钙</td><td class="9p" valign="top" align="center" width="14%" height="16">0</td><td valign="top" align="center" width="27%" height="16">3.91</td><td valign="top" align="center" width="30%" height="16">0.00416(0<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铍</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">4.0</td><td valign="top" align="center" width="30%" height="16">0.025(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">镁</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">4.45</td><td valign="top" align="center" width="30%" height="16">0.0165(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">钼</td><td class="9p" valign="top" align="center" width="14%" height="16">0</td><td valign="top" align="center" width="27%" height="16">5.2</td><td valign="top" align="center" width="30%" height="16"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铱</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">5.3</td><td valign="top" align="center" width="30%" height="16">0.003925(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">钨</td><td class="9p" valign="top" align="center" width="14%" height="16">27</td><td valign="top" align="center" width="27%" height="16">5.65</td><td valign="top" align="center" width="30%" height="16"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">锌</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">5.196</td><td valign="top" align="center" width="30%" height="16">0.00419(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">钴</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">6.64</td><td valign="top" align="center" width="30%" height="16">0.00604(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">镍</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">6.84</td><td valign="top" align="center" width="30%" height="16">0.0069(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">镉</td><td class="9p" valign="top" align="center" width="14%" height="16">0</td><td valign="top" align="center" width="27%" height="16">6.83</td><td valign="top" align="center" width="30%" height="16">0.0042(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%">铟</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%">8.37</td><td valign="top" align="center" width="30%"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="15">铁</td><td class="9p" valign="top" align="center" width="14%">20</td><td valign="top" align="center" width="27%" height="15">9.71</td><td valign="top" align="center" width="30%" height="15">0.00651(20<font face="宋体" size="3">℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铂</td><td class="9p" valign="top" align="center" width="14%" height="16">20</td><td valign="top" align="center" width="27%" height="16">10.6</td><td valign="top" align="center" width="30%" height="16">0.00374(0<font face="宋体" size="3">℃~60℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">锡</td><td class="9p" valign="top" align="center" width="14%" height="16">0</td><td valign="top" align="center" width="27%" height="16">11.0</td><td valign="top" align="center" width="30%" height="16">0.0047(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="17">铷</td><td class="9p" valign="top" align="center" width="14%" height="17">20</td><td valign="top" align="center" width="27%" height="17">12.5</td><td valign="top" align="center" width="30%" height="17"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="16">铬</td><td class="9p" valign="top" align="center" width="14%" height="16">0</td><td valign="top" align="center" width="27%" height="16">12.9</td><td valign="top" align="center" width="30%" height="16">0.003(0<font face="宋体" size="3">℃~100℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="9">镓</td><td class="9p" valign="top" align="center" width="14%" height="9">20</td><td valign="top" align="center" width="27%" height="9">17.4</td><td valign="top" align="center" width="30%" height="9"></td></tr><tr><td class="9p" valign="top" align="center" width="8%">铊</td><td class="9p" valign="top" align="center" width="14%">0</td><td valign="top" align="center" width="27%">18.0</td><td valign="top" align="center" width="30%"></td></tr><tr><td class="9p" valign="top" align="center" width="8%">铯</td><td class="9p" valign="top" align="center" width="14%">20</td><td valign="top" align="center" width="27%">20</td><td valign="top" align="center" width="30%"></td></tr><tr><td class="9p" valign="top" align="center" width="8%">铅</td><td class="9p" valign="top" align="center" width="14%">20</td><td valign="top" align="center" width="27%">20.684</td><td valign="top" align="center" width="30%">(0.0037620<font face="宋体" size="3">℃~40℃)</font></td></tr><tr><td class="9p" valign="top" align="center" width="8%">锑</td><td class="9p" valign="top" align="center" width="14%">0</td><td valign="top" align="center" width="27%">39.0</td><td valign="top" align="center" width="30%"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="10">钛</td><td class="9p" valign="top" align="center" width="14%" height="10">20</td><td valign="top" align="center" width="27%" height="10">42.0</td><td valign="top" align="center" width="30%" height="10"></td></tr><tr><td class="9p" valign="top" align="center" width="8%">汞</td><td class="9p" valign="top" align="center" width="14%">50</td><td valign="top" align="center" width="27%">98.4</td><td valign="top" align="center" width="30%"></td></tr><tr><td class="9p" valign="top" align="center" width="8%" height="4">锰</td><td class="9p" valign="top" align="center" width="14%" height="4">23~100</td><td valign="top" align="center" width="27%" height="4">185.0</td><td valign="top" align="center" width="30%" height="4"></td></tr></tbody></table></center></div></td></tr></tbody></table></p></font></div></td></tr></tbody></table></p>
hunter_deng
发表于 2007-1-20 16:00
CrazyLED
发表于 2007-1-20 17:07
<p>实际电路输出330mA,CREE工作在1W，总输出光通量跟东成的一样。不知道应该标多少lm</p><p>咱们没有专业测试工具，只能跟跟人家的标了</p>[此帖子已经被作者于1169284730编辑过]
kyou
发表于 2007-1-20 17:13
<p>CL兄，那星期一发的C-LE调光档位应该是正常的了吧？不会还是60%吧？！</p>
CrazyLED
发表于 2007-1-20 17:13
正常的:)
hayas
发表于 2007-1-20 17:55
呵呵，那希望我的下一支也是正常的~
jjchji
发表于 2007-1-20 19:15
关键是不知道C-LE 用时间长了会不会不会开关失灵呢<img src="http://www.shoudian.org/images/emot/em03.gif" align="absMiddle" border="0" alt="" />
CrazyLED
发表于 2007-1-20 19:22
楼上的兄弟，除了筒身断裂，还有什么可能才会失灵呢？
DUBA
发表于 2007-1-20 20:09
jjchji
发表于 2007-1-20 20:10
我只是想问问 如果要是罗纹出的氧化层被磨损了 整个电路会不会处与闭合状态
CrazyLED
发表于 2007-1-20 21:20
<p>出现这种情况的可能性非常小</p>
hunter_deng
发表于 2007-1-20 21:26
drifthat
发表于 2007-1-20 21:32
CrazyLED
发表于 2007-1-20 21:51
<div class="quote"><b>以下是引用<i>hunter_deng</i>在2007-01-20 21:26:01的发言：</b><br /><p>如果电池端只有930mA， LED端要100％的效率才能有330mA左右吧， </p><p>不可能有100％的效率吧</p></div><p> </p><p> </p><p>用什么量出来930mA的呢?考虑到万用表的内阻了吗? LZ提供的数据严谨吗? </p><p>我相信自己和工厂的测试结果:)</p>
CrazyLED
发表于 2007-1-20 21:53
<div class="quote"><b>以下是引用<i>drifthat</i>在2007-01-20 21:32:11的发言：</b><br />最高档才40lm，如此看来比ls的1AA也好不到哪儿去，至于超过3w也是说说的。</div><p> </p><p> </p><p>请问40lm是如何得出的结论呢?</p>
hunter_deng
发表于 2007-1-20 23:07
hunter_deng
发表于 2007-1-20 23:15