[原创]我用7135做的恒流电路,改假3w

storylove

<P>近来市场上充斥着很多没有电路的1w,3w用3aaa电池的手电,发现用新电池的时候存在严重的超频问题,所以本人根据自己手上的一个假3w做了如下改动,供有兴趣的朋友参考</P>
<P>先借天游的一副画,3w图<img src="attachments/dvbbs/2005-11/20051172023179058.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051172023179058.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br>自己刻的电路板和原来的比较</P>
<P><br><img src="attachments/dvbbs/2005-11/20051172024893226.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051172024893226.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br>用的是0.8mm的双面板,先用剪刀剪,再用锉刀挫圆[em01]</P>

<P><img src="attachments/dvbbs/2005-11/20051172035915653.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051172035915653.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br>电路板基本完成后焊上7135,和4148,7135焊接的时候由于中间一脚是地,和顶部散热片相同,所以我只焊了散热片,由于ic太小了,这样可以避免短路</P>

[此贴子已经被作者于2005-11-7 20:38:26编辑过]

storylove

<P>论坛实在太卡,上传老是失败<img src="attachments/dvbbs/2005-11/200511720415798383.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511720415798383.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR></P>
<P>焊接完成</P><img src="attachments/dvbbs/2005-11/200511720424137310.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511720424137310.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR><img src="attachments/dvbbs/2005-11/20051172043829065.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/20051172043829065.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR>电流相当好

sh6g

<DIV class=quote><B>以下是引用<I>storylove</I>在2005-11-7 20:29:17的发言：</B><BR>
<P><BR>电路板基本完成后焊上7135,和4148,7135焊接的时候由于中间一脚是地,和顶部散热片相同,所以我只焊了散热片,由于ic太小了,这样可以避免短路</P><BR><BR></DIV>
<P>

<P>聪明啊，哈哈，我这里新到的可以直接焊1片或者2片7135的铝基片我也是这么焊法的</P>

storylove

<P><img src="attachments/dvbbs/2005-11/200511720493738794.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511720493738794.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR>总结一下经验,目前市场上100以内的手电号称1w,3w都是没有电路的,用新的电池的时候超频严重</P>
<P>用了7135以后,原来的负极要剪掉,因为负极连的是7135的out段,用双面板是因为一面做电路,一面还是连电池正极,中间用导线连接</P>

sh6g

7135这么准啊？0.35一点都不差？

junfeixu

<P>楼主的表是20的吧？</P>

storylove

<P>是呀,还经常忘了换量程,老是烧掉电流档的保险丝,结果一下买了5个,还有3个了.....看来又要备货了</P>

adam1209

楼主的万用表和我原来的那块一样，不过我已经换＂胜利＂了[em10]

hhh7

请问楼主，市面上卖的100元以下的都带一个电阻的那种是直驱的，对吗？

storylove

<P>很多连电阻都没有的，我这个就是直通的</P>
<P>国产的用在廉价手电里的led不过关，点亮电压比较高，象我这个达到350ma要3.8v</P>
<P>用充电电池连高亮的机会都没有还要电阻干吗？用好点的碱性电池刚开始有点超频不过由于电流比较大和电池有内阻很快就会跌下来，我改这个是因为要装锂电，锂电不一样内阻小在满电的时候电流非常大，容易发热所以要加电路进去</P>

hhh7

我也打算加电路进去，正在准备邮购7135，唉，小城市就是麻烦，找不到好东西卖

storylove

<P>有可以焊2个7135ic的铝基,不用刻电路板就可以改了</P>

hhh7

<P>今天打算邮购它回来。哈哈，我也要升级了！哈哈</P>

storylove

<P>可以焊2个7135的铝基</P>
<P><img src="attachments/dvbbs/2005-11/200511191131579486.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511191131579486.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR></P>
<P>我的led只有1w故只焊了一个7135,如果是3w边上再焊一个,很方便</P>
<P><img src="attachments/dvbbs/2005-11/200511191141676256.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511191141676256.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR></P>
<P>仿的铝基很差</P>
<P><img src="attachments/dvbbs/2005-11/200511191143842467.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/200511191143842467.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR></P>[em01][em01]

hhh7

<P>右边的是焊出来的而已吗？</P>

<P>另外，这个铝基直接焊零件上去就好了么？什么都不用改之类的了吧？</P>
<P>谢谢哦</P>

storylove

右边的是拆下来的,左边的根据需要1w焊一个,3w焊2个7135就可以了,不用其他电路就可以改现成的手电

hhh7

<P><img src="attachments/dvbbs/2005-11/2005112006863189.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/2005112006863189.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><BR></P>
<P>嘿嘿，就是这个吧，偶问想买但是他们周六日好像休息的，没有买成。</P>

<P>我把这个买回来再买两个7135和两个4148焊上去就可以用了吧，哈哈</P>

storylove

我也是那里买的,7135也有还送4148,可以一次买齐[em01]

hhh7

<P>然后再买一个3W的LED。马上就完工！</P>[em08][em07]