📄 懂开关电源的帮忙看一下，以下的1n5819肖特基二极管能否用普通二极管代替？ ---“我们的avr”技术论坛(主坛).htm
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vAlign=top align=left width="19%" bgColor=#d1d9e2 rowSpan=2>【16楼】 <FONT
color=#000000>fangmcu 方谭</FONT><BR>积分：<FONT
color=#000000>390</FONT><BR>派别：<FONT color=#000000></FONT><BR>等级：<FONT
color=#000000>------</FONT><BR>来自：<FONT color=#000000></FONT><BR></TD>
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color=#000000>请问各位，常用的快恢复二极管有那些型号？？？</FONT> </TD></TR>
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vAlign=bottom
bgColor=#d1d9e2>__________________________<BR>我的方向--玩好单片机！！用精PLC！！！ </TD></TR>
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width=7>2004-11-18,19:12:00 </TD>
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vAlign=top align=left width="19%" bgColor=#e8e8e8 rowSpan=2>【17楼】 <FONT
color=#000000>whadd 冷兵器</FONT><BR><IMG height=138
src="懂开关电源的帮忙看一下，以下的1N5819肖特基二极管能否用普通二极管代替？ ---“我们的AVR”技术论坛(主坛).files/armok0139154.JPG"
width=111><BR>积分：<FONT color=#000000>24</FONT><BR>派别：<FONT
color=#000000></FONT><BR>等级：<FONT color=#000000>------</FONT><BR>来自：<FONT
color=#000000>武汉</FONT><BR></TD>
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color=#000000>14楼的HJJourAVR说的对，在这里不能用普通二极管代替肖特基二极管，除了HJJourAVR说的原因外，另外可能导致LM2575内部的开关管过渡损耗增大，发热加剧，甚至烧掉开关管，此其一；由于反向不能快速关断，有瞬间开关管通过这个二极管对地直通的过程，其瞬间电流较大，导致LM2575内部的浪涌尖峰值较大，可能会击穿内部某些部分，同时干扰也加大，此其二。所以，还是尽量按照其规范使用器件为好，否则还要肖特基管干嘛？当然在紧急情况下，输出电流很小，用普通二极管应急对付一下，也不是不行。</FONT>
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vAlign=bottom bgColor=#e8e8e8>__________________________<BR>树集莺朋友，云行雁弟兄。
<BR><IMG
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width=7>2005-02-25,22:24:23 </TD>
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vAlign=top align=left width="19%" bgColor=#d1d9e2 rowSpan=2>【18楼】 <FONT
color=#000000>elec2000 </FONT><BR>积分：<FONT
color=#000000>95</FONT><BR>派别：<FONT color=#000000></FONT><BR>等级：<FONT
color=#000000>------</FONT><BR>来自：<FONT color=#000000></FONT><BR></TD>
<TD class=f03
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color=#000000>哈哈，朋友帮我买到了 1N5819 了，才0.5元一只，很便宜啊。 <BR>?????
<BR>armok不愧是站长!我买的是10元/100只.</FONT> </TD></TR>
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width=7>2005-02-25,22:34:22 </TD>
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vAlign=top align=left width="19%" bgColor=#e8e8e8 rowSpan=2>【19楼】 <FONT
color=#000000>armok 阿莫</FONT><BR><IMG height=136
src="懂开关电源的帮忙看一下，以下的1N5819肖特基二极管能否用普通二极管代替？ ---“我们的AVR”技术论坛(主坛).files/armok01110386.jpg"
width=102><BR>积分：<FONT color=#000000>20952</FONT><BR>派别：<FONT
color=#000000></FONT><BR>等级：<FONT color=#000000>------</FONT><BR>来自：<FONT
color=#000000>OurAVR.com 站长</FONT><BR></TD>
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style="BORDER-RIGHT: #bbbbbb 0.5pt solid; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none"
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color=#000000>呵呵，零买就是这样的了。</FONT> </TD></TR>
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bgColor=#e8e8e8>__________________________<BR>There's something good in this world. And it's worth fighting for ……
<BR>我的手机为：13433056000，如果本网站不正常，请用手机短信通知我。
<BR>我不用QQ，我用MSN：armokarmok@hotmail. 技术问题请在论坛发贴，否则我会忙不过来，谢谢。 </TD></TR>
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align=left width="19%" bgColor=#e8e8e8><IMG height=1 src=""
width=7>2005-02-26,00:29:04 </TD>
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