要求是百分之1%,用了几种方案,比如NE555振荡,充放电时间,发现精确度有的地方还是达不到要求,请问还有没有测试电容好一点的方法?
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可考虑使用电容传感器。比如FDC2212,FDC2214等。
http://www.ti.com/lsds/ti/sensing-products/capacitive-sensing/capacitance-to-digital-converters-products.page