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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STPM11ATR 数据表(PDF) 34 Page - STMicroelectronics |
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STPM11ATR 数据表(HTML) 34 Page - STMicroelectronics |
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34 / 46 page  Energy calculation algorithm STPM11, STPM12, STPM13, STPM14 34/46 Doc ID 13167 Rev 8 8 Energy calculation algorithm Inside the STPM1x the computing section of the measured active power uses a completely new patented signal process approach. This approach allows the device to reach high performances in terms of accuracy. The signals, coming from the sensors, for the instantaneous voltage is: Equation 7 v(t) = V•sin ωt; where V is the peak voltage and ω is related to the line frequency and the instantaneous current is: Equation 8 i(t) = I • sin ( ωt + ϕ); where I is the peak current, ω is related to the line frequency and ϕ is the phase difference between voltage and current Active power Figure 22. Active energy computation diagram Obsolete Product(s) - Obsolete Product(s) |
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