Digitally controlled current-mode switched power supply
Direct a.c. converter
Direct AC to AC power conversion apparatus for controlling power
Direct torque control inverter arrangement
Direct-current power supply system and air conditioner
Distribution system for A. C. electrical energy derived from D.
Dither control method of PWM inverter to improve low level motor
Drive and power supply with phase shifted carriers
Dual mode direct current power supply
Dual-mode controlled pulse width modulator
Duty ratio detecting apparatus with small return time
Dynamic series voltage restoration for sensitive loads in unbala