Power factor is defined by IEEE and IEC as the ratio of true power to apparent power: PF = W/VA. Power factor takes into account both the phase and wave-shape contributions to the difference ...

The IEC formally adopts USB Type-C™, USB Power Delivery and USB 3.1 Specifications for high-speed data delivery and enhanced usages for device chargin ...

Power Factor Correction. The IEC-61000-3-2 standard defines the maximum harmonic current allowed for a given power level. Initial versions of the standard in 1995 and 2001 were changed by the 2005 ...