一些光电二极管的实际测量
光电二极管具有线性度高、响应速度快、弱光响应好的特点,因此常用于要求较高的场合。以下是一些常见的,实际测量了灵敏度。在650nm的红光下做到400mA/W基本到极限了,大约相当于14%的效率,低于200mA/W的属于偏低。
<img src="data/attachment/forum/dvbbs/2006-4/20064292333441546.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(\'data/attachment/forum/dvbbs/2006-4/20064292333441546.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="data/attachment/forum/dvbbs/2006-4/20064292343112435.gif" 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(\'data/attachment/forum/dvbbs/2006-4/20064292343112435.gif\');}" onmousewheel="return imgzoom(this);" alt="" /> 我已回信,请接收,
那个C3(2*7mm)的是怎么回事呢?<br>看上去有三个管脚,是两个二极管吗?有何特点和应用? <P>收到并已回。</P>
<P>那个C3我也没太弄明白,右边为负极,左边两个对称的正极,点焊在两个角上。但测试结果并不太对称,光电流一个大一个小。</P> <P>收到了,多谢,</P>
<P>C3是不是相当于二象限管的意思呢?<BR>用激光沿7mm方向移动照射一下看?可能两个管的输出值会有变化?<BR>这样就很方便得到我想要的差分信号了?<BR>省得用两个并排的光电管或是昂贵的二象限管了,</P>
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