constant power factor control
3-phase power factor correction
Active Power Factor Correction
active power factor correction APFC
Active power factor corrector
Active power factor corrector with high frequency switch
Adjustable Power Factor
adjustment of power factor angle φ
asynchronous motor with high power factor
automatic optical power control
automatic power control
automatic power factor regulator
功率因数自动调整器
功率因子自动调整器
自动功率因素调整器
automatic water valve without electrical power control