A DC power supply controller
A.C. induction devices having compound resistive coupling of tun
A.C. storage module for reducing harmonic distortion in an A.C.
AC to DC converter with power factor correction
AC transmission system with reactance compensation
AC-DC converter
AC-DC converter having improved power factor to control feedback
Active damping control for active power filter
Active filter for single-phase overhead contact wire energized l
Active neutral current compensator
Active offset for power factor controller
Active power conditioner
Active power conditioner for AC load characteristics
Active power conditioner for reactive and harmonic compensation
Active power factor correction circuit
Adaptive automatic power capacitor for controlling controller a
Adaptive synchronous capacitor switch controller
Advanced static var compensator control system
Amplifier having a variable power factor
Apparatus and method for controlling flow of power in a transmis