和泰克的波形比对,两个波形重叠在一起了,所以看起来是一个波形.
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测220V开关电源的高压线圈两端波形,单个波形,接反相了!
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一串波形
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上升部分放大
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细节部分放大.
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两个波形拉开
探头用两节锂电串联供电,DC/DC 变为正负5V,分别用电流60mA,电源的纹波小于4mV,运放输出的噪音小于3mV.
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探头电源部分.
由于样机是用双面板,所以飞了很多地线,补偿地的连接.
明天把样机送去做更详细的检测!
