两种测试电源纹波的差异
两种测试电源纹波的差异,你看懂了吗?{:1_96:}**** Hidden Message *****
就近接地
让红色环(地线夹和引线以及探头钩组成)所包围的面积尽量小。
你看出来啊 不解,但闻其详 <div class='shownolgin' data-isdigest='no'>看看对比!!!!!!!!11</div><script>showreplylogin();</script><script type="text/javascript">(function(d,c){var a=d.createElement("script"),m=d.getElementsByTagName("script"),eewurl="//counter.eeworld.com.cn/pv/count/";a.src=eewurl+c;m.parentNode.insertBefore(a,m)})(document,523)</script> <div class='shownolgin' data-isdigest='no'>电源接地参考点不同</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>看看</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>表笔的长地引线会耦合一些干扰?</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>因为示波器的地线会拾取辐射噪声。示波器的地线和信号探头形成的环路形成了一个天线。环路面积越大,在电源PWM切换时,示波器接受到的开关噪声就越大。</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>来看看</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>就近接地,让回路最小</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>你要使用示波器自带的接地线圈就行了</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>来看看怎么样</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>看看看怎么样</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'>支持一下楼主</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'><p>11</p>
</div><script>showreplylogin();</script> <div class='shownolgin' data-isdigest='no'><p>这就是测试引线的寄生感抗导致的测试误差,在开关电源中测试需要注意的事项</p>
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