用数字电路实现功率和功率因数的计算。
It USES digital circuit to realize the calculation of the power factor.
通过电路分析对电子镇流器存在的电源电流谐波高和功率因数低等问题。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
为了满足实时检测要求，研究了计算电压、电流有效值和功率因数的快速演算法。
In order to satisfy the real - time measurement, we studied the fast arithmetic of virtual value of voltage and current, power factor.
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