本帖最后由 lushoubao305 于 2016-6-22 15:16 编辑
单片机定时器 输出pwm计算值与实际万用表测量值偏差较大是怎么回事？
定时器H定时器L实测值(V)计算值(V)偏差(V)40033430.2950.2670.02840026070.3620.3330.02940020150.4460.4140.03240015810.5380.5050.03340012580.6360.6030.0334008290.8430.8140.0294006770.9510.9290.0224005551.0631.0470.0164004531.1781.1720.0065354001.4191.430-0.0118334001.671.689-0.01913844001.9241.939-0.015更正一下，是pwm转模拟电压，测得电压是电容C10上端电压
单片机定时器 输出pwm计算值与实际万用表测量值偏差较大是怎么回事？
定时器H定时器L实测值(V)计算值(V)偏差(V)40033430.2950.2670.02840026070.3620.3330.02940020150.4460.4140.03240015810.5380.5050.03340012580.6360.6030.0334008290.8430.8140.0294006770.9510.9290.0224005551.0631.0470.0164004531.1781.1720.0065354001.4191.430-0.0118334001.671.689-0.01913844001.9241.939-0.015更正一下，是pwm转模拟电压，测得电压是电容C10上端电压
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