<DIV class=quote><B>以下是引用<I>ldfan</I>在2005-10-23 19:05:16的发言:</B><br><br>
<P>请问您用的100毫瓦的激光器的标称电压是3伏的吗?如果是,用18650电池会不会影响激光的寿命,毕竟18650的标称是3.7伏,充满电有4.2伏左右。</P></DIV>
<P>标称是3V,我改锂电后串联了一个正向的二极管1N5401。另外原来的电路有稳流措施,经过试验,电压在2.6V到3.5V时电流均为0.95A,也就是说,即便加上高一些的电压,通过LD的电流还是不变的,只不过恒流二极管热一些。</P>
<P>其他电压下的电流:<br>2.2V 0.59A<br>2.3V 0.72A<br>2.4V 0.84A<br>2.5V 0.92A<br>2.6V 0.95A<br>因此,这激光笔不适合用镍氢充电电池(2节)。</P>
<P>以下第一图就是我替代原来2节2号电池的,右边的假电池里面就是一个二极管,同时起到防止电池反接的作用。</P><img src="attachments/dvbbs/2005-10/2005102319341437167.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/2005-10/2005102319341437167.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br><img src="attachments/dvbbs/2005-10/2005102319342761062.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/2005-10/2005102319342761062.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br>
[此贴子已经被作者于2005-10-23 19:36:21编辑过]
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