许多资料上都写有UC3842/3的频率计算公式,有的资料上为:1.72/Rt×Ct;也有的资料上为: 1.8/Rt×Ct,其实这些公式都为近似值,条件为Rt>5K时;如果Rt<5K又怎么算呢。具体见附件
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